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Journal articles on the topic 'Diaphanoscopie'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Sieber, Nicole, Phillip Kölbl, Christian Lingenfelder, Kathrin Stucke-Straub, Sebastian Kupferschmid, and Martin Hessling. "Measurement of the retinal irradiation exposure during diaphanoscopic illumination." Current Directions in Biomedical Engineering 6, no. 3 (September 1, 2020): 276–79. http://dx.doi.org/10.1515/cdbme-2020-3070.

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AbstractFor the visualisation of the intraocular space it is essential to illuminate the inside of the eye. One illumination approach is diaphanoscopy, in which the light of an extraocular source is transmitted through the tissue layers of the eyewall. The transmission properties of these tissues and their irradiation load depend on applied diaphanoscope contact pressure. However, excessive illumination can lead to irreversible photochemical and thermal damage to the retina. In diaphanoscopic illumination, the retina is particularly at risk due to its proximity to the light source. Therefore, the photochemical and thermal retinal hazards, resulting from direct transmitted light through the eyewall, are determined for different applied pressures of the diaphanoscope on the eye (15, 65 and 115 kPa). The study is performed on porcine eyes with different pigmentation. So, the difference in intraocular irradiance, photochemical and thermal hazards, as well as the maximal exposure time is also examined for different pigmentations. For less pigmented eyes the irradiance inside the eye, the photochemical and the thermal hazard are higher than for higher pigmented eyes. The values also become significantly higher for increasing applied pressure with the diaphanoscope but do not exceed given limits in the standard DIN EN ISO 15004-2: 2014.

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2

Schümann, Kerstin, Tamara Wilfling, Gerrit Paasche, Robert Schuon, Thomas Lenarz, Carsten Tautorat, Niels Grabow, and Klaus-Peter Schmitz. "Polymeric stents for the Eustachian tube: development and human cadaver study." Current Directions in Biomedical Engineering 6, no. 3 (September 1, 2020): 213–16. http://dx.doi.org/10.1515/cdbme-2020-3054.

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AbstractImpairment of Eustachian tube function with nonsufficient ventilation of the middle ear is a main cause for chronic otitis media. To provide an effective and safe therapy, the innovative concept of Eustachian tube stenting was established. Biodegradable polymeric stents are developed to restore impaired tube function and dissolve after fulfilling their supportive purpose. To evaluate the applicability of the stents in the Eustachian tube, prototypes in conjunction with corresponding implantation instruments were tested in human cadaver studies. Radiopaque markers and a diaphanoscopic approach were tested as additional features to prove correct positioning of catheter and stent in the tube. In the current study biodegradable polymeric stents were implanted in the Eustachian tube of human cadavers without difficulty. Correct positioning of the stents in the tube was proved by diaphanoscopy during intervention and postoperative tomographic and histological analyses. Once designs are optimized on the basis of cadaver studies, preclinical safety and efficacy studies using animal models will be initiated.

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3

Bryanskaya, Ekaterina O., Irina N. Novikova, Viktor V. Dremin, Roman Yu Gneushev, Olga A. Bibikova, Andrey V. Dunaev, and Viacheslav G. Artyushenko. "Optical Diagnostics of the Maxillary Sinuses by Digital Diaphanoscopy Technology." Diagnostics 11, no. 1 (January 6, 2021): 77. http://dx.doi.org/10.3390/diagnostics11010077.

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The work is devoted to the development of a scientific and technical basis for instrument implementation of a digital diaphanoscopy technology for the diagnosis of maxillary sinus inflammatory diseases taking into account the anatomical features of patients (differences in skin structure, skull bone thickness, and sinus size), the optical properties of exercised tissues, and the age and gender characteristics of patients. The technology is based on visualization and analysis of scattering patterns of low-intensity radiation as it passes through the maxillary sinuses. The article presents the experimental data obtained using the digital diaphanoscopy method and the results of numerical simulation of the optical radiation passage through the study area. The experimental setup has been modernized through the installation of a a device for controlling the LED applicator brightness. The approach proposed may have considerable promise for creating diagnostic criteria for various pathological changes and can be used to assess the differences in the optical and anatomical features of males and females.

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4

Schips, Luigi, Katja Lipsky, Peter Hebel, Georg Hutterer, Stefano Gidaro, Peter H. Petritsch, and Richard E. Zigeuner. "Laparoscopic fenestration of lymphoceles after kidney transplantation with diaphanoscopic guidance." Urology 66, no. 1 (July 2005): 185–87. http://dx.doi.org/10.1016/j.urology.2005.02.020.

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5

Knappe, Ulrich J., Moritz A. Konerding, and Robert Schoenmayr. "Medial wall of the cavernous sinus: microanatomical diaphanoscopic and episcopic investigation." Acta Neurochirurgica 151, no. 8 (April 30, 2009): 961–67. http://dx.doi.org/10.1007/s00701-009-0340-3.

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6

Kryukov, A. I., N. L. Kunelskaya, E. V. Gorovaya, G. Yu Tsarapkin, E. I. Zelikovich, Yu V. Luchsheva, and E. A. Kirasirova. "Diaphanoscopy palatal tonsils with use of the diode laser." Vestnik otorinolaringologii 84, no. 4 (2019): 44. http://dx.doi.org/10.17116/otorino20198404144.

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7

SCHMIDT, JOERG C., GREGOR W. NIETGEN, LUTZ HESSE, and PETER KROLL. "EXTERNAL DIAPHANOSCOPIC ILLUMINATOR: A New Device for Visualization in Pars Plana Vitrectomy." Retina 20, no. 1 (January 2000): 103–6. http://dx.doi.org/10.1097/00006982-200001000-00023.

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8

Tereshchenko, A. V., N. N. Yudina, and D. K. Solovev. "Problems of localization of an intraocular impacted foreign body. Clinical case." Modern technologies in ophtalmology, no. 1 (May 29, 2021): 230–33. http://dx.doi.org/10.25276/2312-4911-2021-1-230-233.

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The article describes a clinical case of an eye injury with presence an intraocular foreign body (IFB), the localization of which was problematic. Patient T was 28 years old, was admitted with complaints of lack of vision, redness and lacrimation from the left eye. From the anamnesis – while working, he hit metal with a hammer, and the scale flew off into the left eye. In addition to the standard ophthalmologic examination, electrophysiological examination, B-scan and UBM were performed. According to the B-scan data, high optical density IFB was detected in the shells 9 mm from the upper border of the optic disc, in the 1-hour meridian, approximately 3.5 mm long. According to the X-ray data of the orbit in 2 projections, an X-ray contrast shadow, metal density, up to 3.0 mm in size was revealed. Radiography of Baltin–Comberg was not performed due to the lack of technical capability. During a standard three-port vitrectomy in the area of possible foreign body occurrence, the retina was damaged, there was a local detachment, but the foreign body itself was not visualized. In addition, during a thorough, detailed examination using a sclerocompressor, no visible defects of the sclera were found transvitreally. In the early postoperative period, the patient was performed with a computed tomogram, where the presence of a foreign body was confirmed, which was adjacent to the posterior wall of the eyeball for 1 hour with clear contours, measuring 3х3 mm. Taking into account the non-standard situation, the absence of a foreign body in the vitreous cavity, it was decided to re-search and remove the foreign body by using of the diascleral method. For a clearer contrast, diaphanoscopy was used, which made it possible to visualize and accurately localize a foreign body in the layers of the sclera. Conclusion. In the presence of IFB for search and precise localization, it is first of all necessary to perform the radiological Baltin-Comberg method. In cases when FB is not visualized intraoperatively, is impaled into the layers of the eye and the radiological Baltin-Comberg method has not been performed, diaphanoscopy of the eye is the optimal auxiliary method for searching for «hidden» foreign bodies. Key words: intraocular foreign body, radiological method of Baltin-Comberg, diaphanoscopy of the eye.

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9

Schlottmann, K., F. Klebl, R. Wiest, S. Grüne, F. Kullmann, J. Schölmerich, and D. Schacherer. "Ultrasound-guided percutaneous endoscopic gastrostomy in patients with negative diaphanoscopy." Endoscopy 39, no. 08 (July 30, 2007): 686–91. http://dx.doi.org/10.1055/s-2007-966604.

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10

Horisberger, B., and T. Krompecher. "Forensic diaphanoscopy — how to investigate invisible subcutaneous hematomas on living subjects." Journal of Clinical Forensic Medicine 5, no. 1 (March 1998): 56. http://dx.doi.org/10.1016/s1353-1131(98)90012-8.

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11

Horisberger, B., and T. Krompecher. "Forensic diaphanoscopy: how to investigate invisible subcutaneous hematomas on living subjects." International Journal of Legal Medicine 110, no. 2 (February 15, 1997): 73–78. http://dx.doi.org/10.1007/s004140050034.

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12

Stölzel, Katharina, Agnieszka J. Szczepek, Heidi Olze, Stefan Koß, Olaf Minet, and Urszula Zabarylo. "Digital diaphanoscopy of the maxillary sinuses: A revival of optical diagnosis for rhinosinusitis." American Journal of Otolaryngology 41, no. 3 (May 2020): 102444. http://dx.doi.org/10.1016/j.amjoto.2020.102444.

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13

Kolpakov, A. V., I. N. Judin, O. A. Zorina, and I. N. Spiridonov. "Early Detection of Inflammation Foci in the Soft Tissues of the Periodontium Using Infrared Diaphanoscopy." Biomedical Engineering 50, no. 2 (July 2016): 88–91. http://dx.doi.org/10.1007/s10527-016-9594-2.

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14

Patrzyk, M., A. Schreiber, C. Heidecke, and A. Glitsch. "Laser-supported diaphanoscopy: an innovative technique for locating gastric stromal tumors in gastroscopic-laparoscopic rendezvous: a case series." Endoscopy 41, no. 12 (November 10, 2009): 1090–94. http://dx.doi.org/10.1055/s-0029-1215321.

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15

Tumanian, N. G., Zh M. Mukhina, L. V. Esaulova, E. Yu Papulova, E. G. Savenko, and S. V. Garkusha. "Colored rice varieties of Russian breeding in terms of grain quality for development of functional rice varieties." E3S Web of Conferences 224 (2020): 04021. http://dx.doi.org/10.1051/e3sconf/202022404021.

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In order to develop rice breeding material of a functional direction, technological and biochemical grain quality traits of varieties bred by the Federal Scientific Rice Centre (Rubin, Mars, Mavr, Gagat, Yuzhnaya noch) with a colored grain pericarp, high content of anthocyanins and intended for functional nutrition were studied. The varieties were grown in the valley agrolandscape zone of Krasnodar region (Russia) in 2017–2019. The studied rice varieties are included in the State Register of Protected Breeding Achievements. The grain size by weight of 1000 absolutely dry grains (weight of 1000 a.d.g.) was determined according to GOST 10842-89, fracturing on a DSZ-3 diaphanoscope, protein content was measured using an Infralum FT-10 device. The determination of amylose was carried out colorimetrically using the amylose-iodine reaction according to Juliano. The varieties have a medium-sized caryopsis (21.5-27.0 g of 1000 grains); of them, the variety Yuzhnaya noch is characterized by the smallest grain. The variety Mars belongs to the low amylose group, varieties Mavr, Rubin and Gagat to the medium amylose group, Yuzhnaya noch to the waxy group. In terms of protein content in grain, all varieties are classified as medium protein. The maximum grain fracture was in variety Mavr in the range of 19-25% and the minimum in Mars and Gagat, respectively 2-5 and 2-6%. Variations in grain size indicators, amylose and protein content of varieties are weak in all varieties of special purpose, which testified to their high stability under growing conditions.

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16

Kobylyansky, V. D., O. V. Solodukhina, and I. M. Nikonorova. "Morphological features of rye grain with low pentosan content." Proceedings on applied botany, genetics and breeding 182, no. 2 (July 1, 2021): 123–30. http://dx.doi.org/10.30901/2227-8834-2021-2-123-130.

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Background. The grain coat plays a major role in the development of rye cultivars with low levels of water-soluble pentosans (WSP). Grain coat thinness is a diagnostic trait for low WSP (arabinoxylans) content. To improve the technology of low-pentosan rye breeding, it becomes important to study the effect of changes in the anatomy of low-pentosan grains on morphological characteristics.Materials and methods. Grains with thin coats (transparent) were identified with the LFS-1 diaphanoscope in the populations of 7 commercial winter rye cultivars grown in Russian Federation. Anatomical and morphological features of seed coats were studied on thick- and thin-coated grains identified in the rye cultivars ‘Era’ and ‘Vyatka’. The thickness of grain coats and the aleurone layer were assessed according to L. N. Lyubarsky.Results and conclusions. In thin-coated rye grains, we found a reduction in the thickness of the pericarp and seed coats by 50–70% and in the aleurone layer by 32.1–39.6%, compared to thick-coated grains. With a constant cell size in “transparent” grains, a decrease in the thickness of the aleurone layer and coat occurs at the expense of the reduction in not only the cell walls, but also the intercellular space. The pericarp in the tissues of the second multicellular layer contains the bulk of the protective biologically passive WSP. It was proved that there were no significant changes in grain parameters, such as length, width and relative volume, depending on coat thinness. Significant differences were found in the 1000 grain weight. In “transparent” grains the index increased by 5.2–19.7%, compared with “nontransparent” ones.

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17

Patrzyk, Maciej, Anne Glitsch, André Schreiber, Alexandra Busemann, Lars I. Partecke, and Claus D. Heidecke. "Single-Port Versus Standard Laparoscopic Resection for a Gastric Benign Tumor in Gastroscopic-Laparoscopic Rendezvous Procedures Using a Laser-supported Diaphanoscopy." Surgical Laparoscopy, Endoscopy & Percutaneous Techniques 23, no. 4 (August 2013): 400–405. http://dx.doi.org/10.1097/sle.0b013e31828e3fe1.

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18

Patrzyk, M., K. Ludwig, C. D. Heidecke, W. von Bernstorff, and A. Glitsch. "Laser-supported diaphanoscopy: a new technique in laparoscopic-endoscopic rendezvous procedures allowing better and more tissue-sparing tumor resection than wedge resection." Surgical Endoscopy 25, no. 6 (December 7, 2010): 2023–28. http://dx.doi.org/10.1007/s00464-010-1468-1.

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19

Mesecke-v. Rheinbaben, I., V. Prapavat, M. Linnarz, I. Mollenhauer, G. Müller, U. Boenick, and M. Becker. "In-vitro-Untersuchungen zur Spezifikation methodischer und apparatetechnischer Anforderungen der endoskopischen Infrarot-Diaphanoskopie - In vitro Investigations for the Specification of Practical and Technical Demands on Endoscopic Infrared Diaphanoscopy." Biomedizinische Technik/Biomedical Engineering 40, no. 9 (1995): 255–62. http://dx.doi.org/10.1515/bmte.1995.40.9.255.

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20

"Diaphanoscopy of The Eye." Australasian Journal of Optometry 2, no. 8 (March 25, 2010): 14–15. http://dx.doi.org/10.1111/j.1444-0938.1920.tb00320.x.

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21

Patrzyk, Maciej, Anne Glitsch, Katharina Beyer, Sebastian Lünse, Johanes Höhn, Claus Dieter Heidecke, and Wolfram Keßler. "Laparoscopic-endoscopic Rendezvous Procedures for Upper Gastrointestinal Tumors Guided by Laser-supported Reverse Diaphanoscopy." Surgical Laparoscopy, Endoscopy & Percutaneous Techniques, May 2019, 1. http://dx.doi.org/10.1097/sle.0000000000000665.

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22

Kolpakov, Alexander, Alexey Makarov, and Igor Spiridonov. "Use of an infrared diaphanoscopy method for estimating the condition of mouth cavity's soft tissues in dentistry." Science and Education of the Bauman MSTU 13, no. 12 (December 3, 2013). http://dx.doi.org/10.7463/1213.0669704.

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23

Glitsch, A., M. Patrzyk, K. Ludwig, A. Schreiber, W. von Bernstorff, and CD Heidecke. "A new technique in laparoscopic-endoscopic rendezvous procedures – Laser-supported diaphanoscopy – allows better and more tissue-sparing tumour resection in comparison to wedge resection." Zeitschrift für Gastroenterologie 48, no. 08 (August 2010). http://dx.doi.org/10.1055/s-0030-1263544.

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24

Steinbrück, Ingo, Helge Otto, Sebastian Ullrich, Christoph Ruether, Roman Fischbach, Jürgen Pohl, and Friedrich Hagenmüller. "Endoscopic neo-anastomosis by Rendez-vous technique for the treatment of complete occlusion of bilioenteric anastomoses and distal bile ducts (case series)." Zeitschrift für Gastroenterologie, July 23, 2021. http://dx.doi.org/10.1055/a-1495-6352.

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Abstract Background and aims The complete occlusion of bilioenteric anastomoses is a rare and challenging clinical condition. Repeated surgery is burdened with technical difficulties and significant morbidity. We report the first series of completely occluded bilioenteric anastomoses resp. distal bile duct successfully treated by simultaneous percutaneous and retrograde endoscopic interventions. Patients and methods This case series includes 4 patients with obstructive jaundice and/or recurring cholangitis and pain due to complete fibrotic occlusion of a hepaticojejunostomy (3 patients) and the distal bile duct (1 patient). After performing PTCD and stepwise dilation of the biliocutaneous tract, we tried to approach the occluded anastomosis from 2 sides by simultaneous percutaneous cholangioscopy and peroral device-assisted enteroscopy/duodenoscopy. By cutting through the separating tissue layer with a needle knife under endoscopic and fluoroscopic control using diaphanoscopy, a new anastomosis should be established followed by dilation of the neoanastomosis with subsequent percutaneous transhepatic drainage for a minimum of 1 year to prevent re-occlusion. Results The Rendez-vous maneuver was successful in 3/4 cases. In one case, the retrograde access to the anastomosis failed, so the neoanastomosis was cut under cholangioscopic and fluoroscopic guidance only. The neoanastomosis could be established successfully in all 4 cases. Jaundice, cholangitis, and pain disappeared. Minor periinterventional adverse events were cholangitis (n = 1) and pneumonia (n = 1) due to aspiration, which could be managed conservatively. No serious adverse events were observed, and no re-occlusion of any neoanastomosis occurred during the follow-up before and after removal of the percutaneous drainage. Conclusion Simultaneous percutaneous cholangioscopy and device-assisted enteroscopy/duodenoscopy with endoscopic creation of a neoanastomosis is a possible concept for the treatment of completely occluded bilioenteric anastomoses and distal bile ducts. This case series confirms the feasibility, safety, and long-term effectiveness of this treatment.

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