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Relevant bibliographies by topics / Radiographic markers

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Academic literature on the topic 'Radiographic markers'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Radiographic markers"

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Christman, RA, and P. Ly. "Radiographic anatomy of the first metatarsal." Journal of the American Podiatric Medical Association 80, no. 4 (1990): 177–203. http://dx.doi.org/10.7547/87507315-80-4-177.

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Normal radiographic anatomy of the first metatarsal bone is established through cadaver dissection, examination of bone specimens, and radiography. Extra-articular and distal articular anatomical landmarks are identified with wire markers. Dorsoplantar, lateral, lateral oblique, and medial oblique radiographs of 15 osteologic sites are presented, including the articular margins of the first metatarsal head, the borders of the three diaphyseal surfaces, the origins of the metatarsophalangeal collateral and metatarsosesamoid suspensory ligaments, and the insertions of the first cuneiform-metatarsal joint ligaments and the tibialis anterior and peroneus longus tendons. The correlation of gross anatomy and radiographs is described.

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Curylo, Lukasz J., Charles Edwards, and Ronald W. DeWald. "Radiographic Markers in Spondyloptosis." Spine 27, no. 18 (2002): 2021–25. http://dx.doi.org/10.1097/00007632-200209150-00010.

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Galler, L., and W. Portner. "Radiographic markers in grafts." Radiology 180, no. 2 (1991): 586. http://dx.doi.org/10.1148/radiology.180.2.2068337.

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Murphy, Micheal, Richard Hodgson, Peter L. Harris, Richard G. McWilliams, David E. Hartley, and Michael M. D. Lawrence-Brown. "Plain Radiographic Surveillance of Abdominal Aortic Stent-Grafts: The Liverpool/Perth Protocol." Journal of Endovascular Therapy 10, no. 5 (2003): 911–12. http://dx.doi.org/10.1177/152660280301000510.

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Purpose: To present a protocol for plain radiographic surveillance of abdominal aortic stent-grafts that addresses the main variables in need of standardization: (1) patient position, (2) radiographic centering point, and (3) focus-to-film distance. Technique: Our policy is to perform baseline anteroposterior and lateral films following endoluminal grafting and repeat the studies annually. These are the most important films to assess migration and component separation; supplementary right and left posterior oblique radiographs may help identify wireform fractures. It is best to perform radiography before computed tomography if both tests are scheduled for the same day, as excretion of intravenous contrast opacifies the renal collecting systems and interferes with radiographic analysis. Conclusions: Evaluation of the radiographs depends on the design of the stent-graft, so it is important to understand graft construction and the position of the radiopaque markers to best assess changes on follow-up films.

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VLAD, STEVEN C., TUHINA NEOGI, PIRAN ALIABADI, JOÃO D. T. FONTES, and DAVID T. FELSON. "No Association Between Markers of Inflammation and Osteoarthritis of the Hands and Knees." Journal of Rheumatology 38, no. 8 (2011): 1665–70. http://dx.doi.org/10.3899/jrheum.100971.

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Objective.Local inflammation plays a prominent role in osteoarthritis (OA). This could be reflected in the presence of elevated soluble inflammatory markers. We conducted analyses to assess the association of inflammatory markers with radiographic OA of the hands and knees in a large community-based cohort.Methods.The Framingham Offspring cohort consists of the adult children of the original cohort and their spouses. In 1998–2001 these subjects provided blood specimens that were tested for 17 markers of systemic inflammation. In 2002–2005 these subjects had radiographs of both knees and hands. Each hand and knee joint was assigned a Kellgren and Lawrence (KL) score (0–4). We used logistic regression with generalized estimating equations and adjustment for age, sex, and body mass index to examine the association between each inflammatory marker and the presence of radiographic OA (ROA = KL grade ≥ 2) in any joint. We also constructed models for hand joints and knee joints alone.Results.Radiographs and measures of inflammation were done for 1235 subjects (56% women, mean age 65 yrs). Of that group, 729 subjects (59%) had ROA in ≥ 1 hand or knee joint: 179 (14.3%) had knee OA, and 694 (56.2%) had hand OA. There were no significant associations between any marker of inflammation and ROA.Conclusion.In this large sample, in which OA was carefully assessed and multiple markers measured, we found no evidence of an association between any inflammatory marker and the presence of radiographic OA.

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Bernholt, David, Joseph D. Lamplot, Eric Eutsler, and Jeffrey J. Nepple. "Utility of Merchant View Radiographs for Assessment of TT-TG: A Comparison to MRI." Orthopaedic Journal of Sports Medicine 6, no. 7_suppl4 (2018): 2325967118S0007. http://dx.doi.org/10.1177/2325967118s00075.

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Objectives: Lateralization of the tibial tubercle plays a significant role in the pathophysiology of patellar instability and is most often assessed by the tibial tubercle to trochlear groove distance (TT-TG) measured on CT or MRI with the knee in extension. However, tracking of the patella in 30 to 45 degrees of flexion has been suggested to be of greater clinical significance. Merchant radiographs can demonstrate the position of the tibial tubercle relative to the trochlear groove in this range of flexion and thus may serve as a valuable tool in the assessment of patellar tracking. The purpose of the current study was (1) to validate radiographic assessment of the merchant view TT-TG and (2) to determine the correlation with MRI-based measurements. Methods: To validate Merchant TT-TG as a marker of the position of the tibial tubercle, 41 patients between the ages of 10-18 had standardized Merchant radiographs in 45 degrees flexion yielding imaging of 82 knees. Lead markers were placed upon the skin centered over the tibial tubercle based on palpation. Radiographs were collected and analyzed. The TT-TG was measured as the distance between lines centered over the deepest point of the trochlear groove and the center of the tibial tubercle and perpendicular to the anterior condylar axis. In order to correlate Merchant TT-TG to MRI TT-TG, 16 additional patients were added to reach a total of 30 patients with a Merchant radiograph and MRI, as power calculation determined 29 knees needed to detect a Pearson correlation coefficient (PCC) of .500. There was excellent interobserver reliability between two readers for Merchant TT-TG with and without use of a radiographic marker (ICC = .975 and .923 respectively). Results: The tibial tubercle could be identified on Merchant radiograph in 67 images (81.7%). Merchant TT-TG measured with use of a marker was very strongly correlated measurement based on bony landmarks alone (PCC = .848). The Merchant TT-TG measured with bony landmarks alone was strongly correlated to MRI TT-TG (PCC = .602). The strength of this correlation was increased by standardizing TT-TG by patellar width (PCC = .710). MRI TT-TG was increased in patients with patellar instability at 13.9 mm compared to 10.5 mm (p <.01); Merchant TT-TG was also increased in patients with patellar instability at 9.1 mm compared to 1.9 mm (p < .001). Conclusion: Standardized Merchant radiographs without radiographic markers allow for assessment of TT-TG in the majority of patients. Merchant TT-TG strongly correlates with MRI TT-TG but measured 5-8 mm smaller than MRI TT-TG.

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Tugwell, Jenna, and Adele Maddison. "Radiographic markers – A reservoir for bacteria?" Radiography 17, no. 2 (2011): 115–20. http://dx.doi.org/10.1016/j.radi.2010.10.005.

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Zinreich, Simion J., Eva S. Zinreich, and Rex Bare. "5469847 Radiographic multi-modality skin markers." Magnetic Resonance Imaging 14, no. 5 (1996): VII. http://dx.doi.org/10.1016/s0730-725x(96)90026-0.

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Sharma, A., P. Gilbert, J. Campbell, et al. "Radiographic landmarks for measurement of cranial tibial subluxation in the canine cruciate ligament deficient stifle." Veterinary and Comparative Orthopaedics and Traumatology 25, no. 06 (2012): 478–87. http://dx.doi.org/10.3415/vcot-12-02-0017.

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SummaryObjectives: The primary objective was to develop a repeatable radiographic technique for assessment of cranial tibial subluxation (CTS) and test the intra-observer and inter-observer repeatability of the chosen landmarks. A secondary objective was to determine the effects of digital radiographic magnification on CTS measurement repeatability.Methods: Twenty-three normal canine pelvic limbs were used to determine the magnitude of CTS before and after transection of the cranial cruciate ligament. Mediolateral radiographs were taken with and without fiduciary markers in place. Three investigators measured the CTS using radiographically visible anatomic landmarks at two different magnifications. The total observed variabilities were assessed by inter-observer and intra-observer differences. Paired t-tests were used to determine the effect of magnification and marker presence on CTS measures.Results: Measurement of the CTS from the caudal margin of the intercondylar fossa on the femur to the intercondylar eminence was the most repeatable. Poor correlation between the anatomic landmarks and the fiduciary bone markers was observed. We found no effect of magnification or presence or absence of bone markers on measurement of CTS.Clinical significance: Cranial tibial subluxation can be detected with the most repeatability by measuring between the caudal margin of the intercondylar fossa and the intercondylar eminence. Magnification of the digitized radiographic image had minimal effect on repeatability. This technique can be used for in vivo analysis of the canine cruciate ligament deficient stifle joint.

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Scheidt, Rodrigo Benedet, Carlos Roberto Galia, Cristiano Valter Diesel, Ricardo Rosito, and Carlos Alberto De Souza Macedo. "Prevalence of radiographic markers of femoroacetabular impingement in asymptomatic adults." Revista do Colégio Brasileiro de Cirurgiões 41, no. 1 (2014): 36–42. http://dx.doi.org/10.1590/s0100-69912014000100008.

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OBJECTIVE: to determine the prevalence of radiographic signs of femoroacetabular impingement (FAI) in asymptomatic adults and correlate them with data from physical examinations. METHODS: We conducted a cross-sectional study with 82 asymptomatic volunteers, 164 hips, between 40 and 60 years of age, selected by convenience. They were submitted to anamnesis and clinical examination of the hip, anteroposterior (AP) pelvis radiographs with three incidences, Dunn 45° and Lequesne false profile of each hip, to measure the variables. We measured the alpha angle, anterior offset of the femoral neck, cervical diaphyseal angle, CE angle of Wiberg, acetabular index, Sharp angle, and the crossing, ischial spine and posterior wall signs. RESULTS: our sample consisted of 66% women, mean age of 50.4 years. The average alpha angle was 45.10°, SD=8.6. One quarter of the hips showed alpha angle greater than or equal to 50°; among men the prevalence was 34%, and among women, 11%. We found indicative radiographic signs of femoroacetabular impingement in 42.6% of hips, whether femoral or acetabular, and the increased alpha angle was related to the decrease in hip internal rotation (p<0.001). CONCLUSION: the radiographic findings of femoroacetabular impingement in asymptomatic patients were frequent in the studied sample. The increase in alpha angle was associated with decreased internal rotation.

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Dissertations / Theses on the topic "Radiographic markers"

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Machado, Sydney M. "Single-plane radiographic measurement of mobile-bearing knee motion using an unknown distribution of markers." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0015920.

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Dippenaar, Alfred Meyer. "Utilising radiographic incisor crown markers to determine incisor inclination on headfilms an experimental study on extracted teeth /." Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-03022004-085319/.

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Lucas, Erin. "Measuring in vivo internal spinal cord deformations during experimental spinal cord injury using a rat model, radiography, and fiducial markers." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27808.

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Spinal cord injuries (SCIs) are commonly studied experimentally by causing injury to rodent spinal cords in vivo and analyzing behavioral and histological results post injury. Few researchers have directly investigated the deformation of the in vivo spinal cord during impact, which is thought to be a predictor of injury. This knowledge would help to establish correlations among impact parameters, internal structure deformation, and histological and functional outcomes. The objective of this thesis was to develop a radiographic method of tracking the real-time internal deformations of an anesthetized rat‘s spinal cord during a typical experimental SCI. A technique was developed for injecting fiducial markers into the dorsal and ventral white and grey matter of in vivo rat spinal cords. Two radio-opaque beads were injected into C5/6 in the approximate location of the dorsal and ventral white matter. Four additional beads were glued to the surface of the cord caudal and cranial to the injection site (one dorsal, one ventral). Overall bead displacement was measured during quasi-static compression using standard medical x-ray equipment. Dynamic bead displacement was tracked during a dorsal impact (130mm/s, 1mm depth) by imaging laterally at 3,000 fps using a custom high-speed x-ray system. The internal spinal cord beads displaced 1.02-1.7 times more than the surface beads in the cranial direction and 2.5-11 times more in the ventral direction for the dynamic impact and maximum quasi-static compressions. The dorsal spinal cord beads (internal and surface) displaced more than the ventral spinal cord beads during all compressions. Finite element modeling and experimental measurements suggested that bead migration with respect to the spinal cord tissue was small and mostly insignificant. These results support the merit of this technique for measuring in vivo spinal cord deformation. The differences in bead displacements imply that the spinal cord undergoes complex internal and surface deformations during impact. Many applications of this technique are conceivable including validating finite element and surrogate models of the spinal cord, comparing localized grey and white matter motion during impact to histological findings, and improving SCI preventative and treatment measures.

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Dippenaar, Alfred Meyer. "Utilising radiographic incisor crown markers to determine incisor inclination on lateral headfilms - and experimental study on extracted teeth." Thesis, 2003. http://hdl.handle.net/2263/22912.

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Inaccuracy in landmark identification is regarded as the most important source of error in cephalometry. Better definition of landmarks should therefore contribute to better clinical decisions and research validity. This study primarily comprised of an ex vivo investigation on 50 extracted lower incisor teeth to determine whether radiopaque markers could be utilised to accurately assess lower incisor inclination. Fifty extracted lower incisor teeth were mounted onto a Perspex sheet. Radiopaque markers, manufactured from 1mm wide strips of lead film from used peri-apical radiographs, were attached to the crowns of the mounted teeth. A lateral cephalometric radiograph was taken in accordance to standard radiographic procedures (radiograph A). This showed the true inclination of the teeth. A second radiograph was taken with the roots obscured (radiograph B). Three observers traced the inclinations of the teeth on radiograph B (from incisor edge through the middle of the labio-lingual crown-root junction). The determination was done on two different occasions and the assessments compared with the true inclination. Comparative statistical analysis was applied to the readings and the results indicated that this method compared favourably with other methods to determine incisor inclination. In addition, clinical application of opaque markers to the teeth of patients demonstrated the following: it indicated exactly which tooth was being assessed, provided clear definition of the anatomical crown in the sagittal plane and served as a constant reference point for clinical, study model and cephalometric measurements. decisions and research validity. Opaque radiographic markers on teeth can contribute to more accurate cephalometric measurements in orthodontics, leading to better diagnoses, treatment planning and research validity.<br>Thesis (MChD (Orthodontics))--University of Pretoria, 2005.<br>Orthodontics<br>unrestricted

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Hurry, Jennifer. "Radiographic Bone Quality Markers and Implant Migration: The Search for Patient-Specific Models of Knee Arthroplasty Longevity." Thesis, 2012. http://hdl.handle.net/10222/15361.

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The objective of this study was to examine the link between radiographic measures of bone quality and total knee implant migration as measured by radiostereometric analysis (RSA). Two uncemented total knee arthroplasty studies (n=65) with RSA and bone mineral density (BMD) exams up to two years post surgery, and one study with cemented total knees with one year RSA data (n=18) were examined. Radiograph image texture analysis was used to characterize the bone microarchitecture, and a feasibility study was conducted to determine if a given x-ray machine could be used to obtain bone mineral density at the same time as the RSA exams. Random ForestTM ensemble classification tree statistical models classified patients into groups based on implant migration with a range of cut-points. Models based on bone texture parameters measured from the two year radiographs had a sensitivity of 87.5% and specificity of 80% when classifying patients who had more than 0.3mm maximum total point motion (MTPM) at two years using the one year exam as reference. Other cut-points were examined, with models generally having a lower specificity if the acceptable migration was smaller, and lower sensitivity if higher migrations were tolerable. In a predictive model, post-operative bone texture could be used to create a model with a sensitivity of 75% and a specificity of 80% when predicting those subjects with cemented implants who went on to more than 0.4mm total migration by one year. Bone mineral density of the proximal tibia, as determined by clinical scanners, was not found to increase the accuracy of implant migration group classification. An empirical fit to central regions of a purposed-built cross-wedge calibration phantom returned residuals of less than ±1.5% for the bone-equivalent thicknesses. The coefficient of variation of the region greyscale values in three images spread over three days is under 4%, showing the stability of the system to hold a calibration between phantom exams and patient scans. Scatter and dynamic range issues will need to be considered for an accurate calibration across the full range of areal bone mineral densities in the distal femur and proximal tibia.

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Lorenz, Stephan. "Vergleichende Untersuchung unterschiedlicher Markersysteme für die präimplantologische Röntgendiagnostik mit dem Panoramaschichtgerät." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-87DA-C.

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Ziel der Arbeit war der direkte Vergleich verschiedener Referenzierungsmarker wie Hülsen, Kugeln, Plättchen oder Guttaperchapoints bei Aufnahmen zur präimplantologischen Planung mit dem Panoramaschichtgerät. Dazu wurde ein selbstständig weiterentwickeltes Röntgenmodell eines teilbezahnten Unterkiefers verwendet. Für jedes Markersystem wurde eine Planungs-schablone mit Markern für Implantate in Regio 46 und 47 angefertigt und mit einem digitalen Panoramaschichtgerät (Orthophos XG Plus) geröntgt. Hierbei stand der Marker in Regio 47 leicht zur Okklusionsebene gekippt. Zudem wurde vom Röntgenmodell eine DVT-Aufnahme (NewTom 9000) angefertigt und die Ergebnisse mit denen der Panoramaschichtaufnahme verglichen. Die vier Panoramaschichtaufnahmen und die DVT-Aufnahme wurden von je 10 Versuchsteilnehmern ausgewertet. Die verschiedenen Einflussfaktoren wie Messinstrument, Geschlecht, Region und abweichende Stellung der Marker wurden mit mehrfaktoriellen Varianzanalysen inklusive aller Wechselwirkungen untersucht. Die Ergebnisse zeigten einen signifikanten Einfluss der Region bei der Differenz zwischen realer und gemessener Knochenhöhe. Im Mittel war die Differenz bei Region 46 (-2.2 ± 0.4 mm) höher als bei Region 47 (-1.7 ± 0.4 mm). Die mittleren Vergrößerungsfaktoren waren bei allen Markern geringfügig niedriger (1,16–1,21) als der für das Gerät ausgewiesene Vergrößerungsfaktor von 1,25. Das verwendete Messwerkzeug oder das Geschlecht der Probanden hatten keinen signifikanten Einfluss auf das Messergebnis. Nach Kalibrierung lagen Mittelwert und Standardabweichungen insgesamt bei allen Markersystemen innerhalb des geforderten Sicherheitsabstandes von mindestens einem Millimeter zum Nervkanal. Beim Regionsvergleich zeigte die Verwendung des Markertyps Hülse in Regio 47 signifikant geringere Abweichungen bei der Berechnung des realen Knochenangebotes. Der Plättchenmarker zeigte im Mittel die geringste Differenz zwischen realer und nach Kalibrierung gemessener Knochenhöhe. Beim Vergleich der Panoramaschichtaufnahme mit der digitalen Volumentomographie zeigte sich ein signifikanter Unterschied (p<0.01). Es kam zu einer mittleren Unterschätzung des Knochenangebotes von 0,5 mm beim DVT in Regio 46 und einer mittleren Überschätzung des Knochenangebotes von 0,5 mm beim Panoramaschichtgerät in Regio 46 und 47. Der Regionseffekt war dagegen nicht signifikant (p=0.15). Die Ergebnisse zeigen, dass die Panoramaschichtaufnahme unter Verwendung einer Referenzierungsschablone für die präimplantologische Röntgendiagnostik bei Fällen ohne besondere Schwierigkeit als hinreichend genau betrachtet werden kann. Unter dem Gesichtspunkt der Strahlenhygiene sollte die digitale Volumentomo¬graphie komplexen Fällen vorbehalten werden.

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Books on the topic "Radiographic markers"

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Inc, Medical Data International. U.S. breast cancer and gynecologic oncology markets. Medical Data International, 2000.

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Hunter, David J., Frank W. Roemer, and Ed Riordan. Imaging: magnetic resonance imaging. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199668847.003.0018.

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Magnetic resonance imaging (MRI) overcomes many of the limitations associated with conventional radiography, the technique historically regarded as the gold standard in imaging of osteoarthritis (OA). MRI allows visualization of changes and pathologies in joint tissues including cartilage and the menisci, the two tissue components responsible for the indirect radiographic marker of joint space narrowing, decreasing the length of time that must elapse before disease progression can be detected. Other elements of the joint can also be analysed simultaneously: a key development in the understanding of OA. This chapter focuses on the utility of MRI in observational studies and clinical trials, detailing the available MRI techniques and quantitative/qualitative measurements, and their correlation with tissue damage. The possible future directions of MRI in OA are also discussed, with a view to its potential utility in identifying disease-modifying interventions.

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Frost & Sullivan., ed. World medical image management markets: MiniPACS and facility-to-facility teleradiology offer cost-effective solutions. Frost & Sullivan, 1994.

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Frost & Sullivan., ed. Mammography market in the U.S. Frost & Sullivan, 1989.

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The European market for x-ray diagnostic imagers and accessories. Frost & Sullivan, 1993.

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Book chapters on the topic "Radiographic markers"

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Block, Joel A. "Radiographic joint space width (JSW): A marker of disease progression in OA of the hip." In The Many Faces of Osteoarthritis. Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8133-3_36.

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Varadhachary, Gauri, and Renato Lenzi. "Radiographic Studies, Endoscopy and Serum Tumor Markers in the Diagnostic Evaluation of Carcinomas of Unknown Primary Site." In Carcinoma of an Unknown Primary Site. CRC Press, 2006. http://dx.doi.org/10.3109/9781420016253-3.

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"Radiographic Studies, Endoscopy, and Serum Tumor Markers in the Diagnostic Evaluation of Carcinomas of Unknown Primary Site." In Carcinoma of an Unknown Primary Site. CRC Press, 2006. http://dx.doi.org/10.3109/9781420016253-5.

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Vazquez, Ivonne, Mireia Moreno, and Marta Larros. "Pamidronate Treatment in Charcot Neuro-Osteoarthropathy: Change in Biochemical Markers of Bone Turnover and Radiographic Outcome After Treatment." In Insights and Perspectives in Rheumatology. InTech, 2012. http://dx.doi.org/10.5772/25922.

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Rosado-de-Christenson, Melissa L. "Introduction to Chest Radiology." In Chest Imaging. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780199858064.003.0001.

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Introduction to chest radiology provides a general overview of thoracic imaging. Chest radiography is an important part of the imaging evaluation of patients who present with thoracic complaints and is frequently ordered in patients undergoing physical examinations, hospital admission and surgery. Portable chest radiographs are also commonly obtained in patients in the intensive care unit. Chest computed tomography (CT) is characteristically employed for further evaluation of suspected pulmonary, vascular, pleural, mediastinal and chest wall abnormalities. Magnetic resonance imaging (MRI) is often employed as a problem solving tool to further evaluate abnormalities found on radiography or CT. Radiologists should work with radiologic technologists to continuously assess and improve radiologic technique and image quality. Right and left markers must be noted on all radiographs in order to diagnose situs abnormalities. Radiologists should also strive to have optimal working conditions with regards to their reading rooms and viewing equipment. Accurate interpretation of thoracic imaging studies relies on a systematic evaluation of all thoracic structures on radiography, CT and MRI. Radiologists should produce clear radiologic reports and should include recommendations for further imaging and/or management when appropriate. Critical and unexpected imaging findings should be promptly communicated to the clinical team, and such communications should be documented on the radiologic report.

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Raine, Tim, George Collins, Catriona Hall, et al. "Interpreting results." In Oxford Handbook for the Foundation Programme. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198813538.003.0018.

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This chapter explores interpreting results, including blood tests, full blood count (FBC), clotting, cardiac markers, inflammatory response, urea and electrolytes (U+E), liver function tests (LFT) and amylase, calcium and phosphate, endocrine tests, cardiology, electrocardiogram (ECG), respiratory, chest X-ray (CXR), arterial blood gases (ABGs), respiratory function tests, gastrointestinal, abdomen X-ray (AXR), urine tests, neurological, CSF, musculoskeletal, autoantibodies and associated diseases, cervical spine radiographs, and skeletal radiographs.

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Stanciu, Alina. "Performance as a Result of Managerial Accounting and Leadership Vision." In Throughput Accounting in a Hyperconnected World. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7712-6.ch015.

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Achieving performance remains the desire of entities, both those present in the competitive market, and new start-ups that break the existing markets, capitalizing on the opportunities offered by an external environment characterized by volatility, uncertainty, complexity, and ambiguity, but also the present digitalization, internet of things (IoT), 5G internet, and e-platforms. Seen as a reflection of the clear vision of extremely powerful leaders, the overall performance of the entity is attained today against the background of the innovation process. This chapter presents radiography of the new research and deepening directions at the intersection of accounting and management, between science and practice, with the role of potentiating performance as a result of managerial accounting and leadership vision.

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Turner, Helen E., Richard Eastell, and Ashley Grossman. "Bone." In Endocrinology (Oxford Desk Reference). Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199672837.003.0012.

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This chapter discusses the anatomy and physiology of the bone, including mineralization, and outlines techniques in bone remodelling. It describes formation and resorption hormonal markers that are part of the bone remodelling cycle, such as procollagens and serums. It describes how diagnostic measures in these formation markers are increased for focal bone disorders like Paget’s disease, fibrous dysplasia, osteomalacia, bone metastases, myeloma, primary hyperparathyroidism, thyrotoxicosis, and acromegaly. The chapter also discusses osteoporosis, including causes, symptoms, and treatment options. Clinical suggestions for bone diagnoses and diseases are provided, based on dual-energy X-ray absorptiometry (commonly abbreviated as DXA), plain radiography, and bone biopsy. The chapter also defines osteogenesis imperfecta and describes its epidemiology and management. In addition, it outlines sclerosing bone disorders such as osteopetrosis, pycnodysostosis, and hyperostosis type Worth, as well as fibrodysplasia ossificans progressive.

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Hoover, Kevin B. "Psoriatic Arthritis." In Musculoskeletal Imaging Volume 1, edited by Kevin B. Hoover. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190938161.003.0033.

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Chapter 33 discusses psoriatic arthritis, which is a seronegative spondyloarthropathy (SpA) affecting the peripheral and axial skeleton that may precede skin manifestations. Psoriatic arthritis is a challenging diagnosis because it often initially presents without psoriasis, lacks specific serologic markers, and resembles osteoarthritis and other inflammatory arthropathies. It is associated with joint erosions, destruction, and ankylosis often involving the distal interphalangeal (DIP) joints. Radiography is the primary imaging modality for initial diagnosis and monitoring disease progression and treatment efficacy. Skin and nail involvement and characteristic imaging findings are key criteria for diagnosis. MRI and US of symptomatic joints and/or MRI of the sacroiliac (SI) joints may be useful in clinically challenging cases.

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Azok, Joseph T. "Asbestosis." In Chest Imaging. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780199858064.003.0066.

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Asbestosis is a fibrotic pneumoconiosis resulting from the inhalation of asbestos fibers, most commonly from occupational exposure. Chest radiographs and high-resolution chest CT can detect asbestos-related disease. Pleural abnormalities include pleural plaques, pleural effusions, pleural thickening, and mesothelioma. Pleural plaques serve as a marker of asbestos exposure and are the most common imaging abnormality found in patients exposed to asbestos. Parenchymal-induced lung disease includes pulmonary fibrosis, known as asbestosis, rounded atelectasis, and lung cancer. Asbestos exposure leads to an increased risk of both lung cancer and especially mesothelioma, which is rare in the absence of asbestos exposure.

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Conference papers on the topic "Radiographic markers"

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Olejarova, M., V. Vilim, H. Hulejova, J. Gatterova, S. Machacek, and K. Pavelka. "SAT0086 Cartilage derived serologic markers and radiographic progression of knee osteoarthritis." In Annual European Congress of Rheumatology, Annals of the rheumatic diseases ARD July 2001. BMJ Publishing Group Ltd and European League Against Rheumatism, 2001. http://dx.doi.org/10.1136/annrheumdis-2001.461.

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Romero-Sanchez, C., F. Salas-Cuesta, I. Arias, et al. "AB0201 Influence of siga on clinical activity markers in spa patients with non-radiographic and peripheral compromise." In Annual European Congress of Rheumatology, 14–17 June, 2017. BMJ Publishing Group Ltd and European League Against Rheumatism, 2017. http://dx.doi.org/10.1136/annrheumdis-2017-eular.6159.

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Cheng, Allen, Frank Langer, Filiberto Rodriguez, et al. "Transmural LV Systolic Wall Thickening Gradients and Models of Heart Wall Mechanics." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61238.

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We implanted arrays of radiopaque markers to measure lateral equatorial wall transmural strains and global and regional LV geometry in 7 sheep. Without intervening procedures, one and eight weeks after surgery, 4-D datasets from stereo radiographic studies were processed to yield transmural strains from each heart. In accordance with previous theoretical predictions and experimental results, we hypothesized that systolic radial strain (i.e., wall thickening) would exhibit a transmural gradient, increasing from subepicardium to subendocardium, and, as previous work suggested that this was a fundamental mechanism, this gradient would be observed at both the one- and eight-week studies. The one-week studies yielded the expected gradient. This gradient, however, was not present in the eight-week studies, although LV shape and hemodynamics were virtually identical to their one-week values. We discuss the implications of these findings to mechanistic theories of heart wall mechanics.

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"Automatic Detection and Classification of Dental Restorations in Panoramic Radiographs." In InSITE 2019: Informing Science + IT Education Conferences: Jerusalem. Informing Science Institute, 2019. http://dx.doi.org/10.28945/4307.

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[This Proceedings paper was revised and published in the 2019 issue of the journal Issues in Informing Science and Information Technology, Volume 16] Aim/Purpose: The aim of this study was to develop a prototype of an information-generating computer tool designed to automatically map the dental restorations in a panoramic radiograph. Background: A panoramic radiograph is an external dental radiograph of the oro-maxillofacial region, obtained with minimal discomfort and significantly lower radiation dose compared to full mouth intra-oral radiographs or cone-beam computed tomography (CBCT) imaging. Currently, however, a radiologic informative report is not regularly designed for a panoramic radiograph, and the referring doctor needs to interpret the panoramic radiograph manually, according to his own judgment. Methodology: An algorithm, based on techniques of computer vision and machine learning, was developed to automatically detect and classify dental restorations in a panoramic radiograph, such as fillings, crowns, root canal treatments and implants. An experienced dentist evaluated 63 panoramic anonymized images and marked on them, manually, 316 various restorations. The images were automatically cropped to obtain a region of interest (ROI) containing only the upper and lower alveolar ridges. The algorithm automatically segmented the restorations using a local adaptive threshold. In order to improve detection of the dental restorations, morphological operations such as opening, closing and hole-filling were employed. Since each restoration is characterized by a unique shape and unique gray level distribution, 20 numerical features describing the contour and the texture were extracted in order to classify the restorations. Twenty-two different machine learning models were evaluated, using a cross-validation approach, to automatically classify the dental restorations into 9 categories. Contribution: The computer tool will provide automatic detection and classification of dental restorations, as an initial step toward automatic detection of oral pathologies in a panoramic radiograph. The use of this algorithm will aid in generating a radiologic report which includes all the information required to improve patient management and treatment outcome. Findings: The automatic cropping of the ROI in the panoramic radiographs, in order to include only the alveolar ridges, was successful in 97% of the cases. The developed algorithm for detection and classification of the dental restorations correctly detected 95% of the restorations. ‘Weighted k-NN’ was the machine-learning model that yielded the best classification rate of the dental restorations - 92%. Impact on Society: Information that will be extracted automatically from the panoramic image will provide a reliable, reproducible radiographic report, currently unavailable, which will assist the clinician as well as improve patients’ reliance on the diagnosis. Future Research: The algorithm for automatic detection and classification of dental restorations in panoramic imaging must be trained on a larger dataset to improve the results. This algorithm will then be used as a preliminary stage for automatically detecting incidental oral pathologies exhibited in the panoramic images.

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Novovic, Lena D., Vladimir S. Ostojic, Dorde S. Starcevic, and Vladimir S. Petrovic. "Automatic Calibration Marker Detection for Radiography Images." In 2018 26th Telecommunications Forum (TELFOR). IEEE, 2018. http://dx.doi.org/10.1109/telfor.2018.8611868.

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Abd Halim, Suhaila, Akhma Zahid, Nurul Syafinaz Abdul Razak, Arsmah Ibrahim, Yupiter HP Manurung, and Mohd Idris Jayes. "Foreground marker controlled watershed on digital radiographic image for weld discontinuity detection." In PROCEEDINGS OF THE 20TH NATIONAL SYMPOSIUM ON MATHEMATICAL SCIENCES: Research in Mathematical Sciences: A Catalyst for Creativity and Innovation. AIP, 2013. http://dx.doi.org/10.1063/1.4801176.

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Iaquinto, Joseph M., Richard Tsai, Michael J. Fassbind, David R. Haynor, Bruce J. Sangeorzan, and William R. Ledoux. "Design and Marker-Based Validation of a Biplane Fluoroscopy System for Studying the Foot and Ankle." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80906.

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The ability to accurately measure three dimensional (3D) bone kinematics is key to understanding the motion of the joints of the body, and how such motion is altered by injury, disease, and treatment. Precise measurement of such kinematics is technically challenging. Biplane fluoroscopy is ideally suited to measure bone motion. Such systems have been developed in the past for both radiographic stereo-photogrammetric analysis (RSA) [1] and the more challenging model-based analysis [2]. Research groups have studied the knee [3,4], shoulder [5] and ankle [6] motion with similar techniques. The work presented here is an initial evaluation of the performance of our system, i.e., a validation that this in-house system can detect magnitudes of motion on-par with other existing systems.

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Rahma, Amelia Sahira, Eva Firdayanti Bisono, Agus Zainal Arifin, Dini Adni Navastara, and Rarasmaya Indraswari. "Generating automatic marker based on combined directional images from frequency domain for Dental Panoramic Radiograph Segmentation." In 2017 Second International Conference on Informatics and Computing (ICIC). IEEE, 2017. http://dx.doi.org/10.1109/iac.2017.8280627.

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Said, M., M. Guemues, A. Herten, et al. "EP06* The subarachnoid hemorrhage early brain edema score (SEBES) as radiographic marker of clinically relevant intracranial hypertension and unfavorable outcome after subarachnoid hemorrhage." In Abstracts from the 13th annual ESMINT Congress. BMJ Publishing Group Ltd., 2021. http://dx.doi.org/10.1136/neurintsurg-2021-esmint.6.

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Wang, Xiaohui, David H. Foos, James Doran, and Michael K. Rogers. "Fully automatic and reference-marker-free image stitching method for full-spine and full-leg imaging with computed radiography." In Medical Imaging 2004, edited by Martin J. Yaffe and Michael J. Flynn. SPIE, 2004. http://dx.doi.org/10.1117/12.536807.

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