Academic literature on the topic 'Apparent diffusion coefficient'

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Journal articles on the topic "Apparent diffusion coefficient"

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Kuroiwa, Toshihiko, Tsukasa Nagaoka, Masato Ueki, Ichiro Yamada, Naoyuki Miyasaka, and Hideaki Akimoto. "Different Apparent Diffusion Coefficient." Stroke 29, no. 4 (1998): 859–65. http://dx.doi.org/10.1161/01.str.29.4.859.

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Cheung, S. C. H. "Methods to measure apparent diffusion coefficients in compacted bentonite clays and data interpretation." Canadian Journal of Civil Engineering 16, no. 4 (1989): 434–43. http://dx.doi.org/10.1139/l89-073.

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The methods used to determine apparent diffusion coefficients and the appropriate parameters for modelling diffusion through compacted bentonite–water systems are assessed and discussed. The measured apparent diffusion coefficient can vary between methods. The discrepancies are shown to be due to heterogeneous diffusivities arising from the proximity of the surface of clay particles. Two different diffusivity pathways are identified and the diffusive flux is shown to be dictated by the charge of diffusing species, diffusion time, and soil fabric. Key words: apparent diffusion coefficient, meth
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A., Dr Amaresh Kumar. "Detection of Diffusion-Weighted and Apparent Diffusion Coefficient MRI Abnormalities in 100 Patients with Stroke." Journal of Medical Science And clinical Research 05, no. 03 (2017): 18450–56. http://dx.doi.org/10.18535/jmscr/v5i3.29.

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Sumikawa, Tetsuo, Hidetake Yabuuchi, Chiharu Sumikawa, Yoshiteru Nakashima, and Gouji Miura. "Influence of blade width and magnetic field strength on the ADC on PROPELLER DWI in head and neck." Neuroradiology Journal 33, no. 1 (2019): 39–47. http://dx.doi.org/10.1177/1971400919870178.

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Purpose The purpose of this study was to investigate the influence of blade width and magnetic field strength on apparent diffusion coefficient values of periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted imaging in the head and neck at 1.5 and 3.0 T magnetic resonance imaging. Methods Fifteen healthy volunteers (eight men and seven women; mean age 36.4 ± 10.1 years) underwent PROPELLER diffusion-weighted imaging using four blade widths at 3.0 T and three blade widths at 1.5 T. For the multigroup comparison of apparent diffusion coeffici
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Doai, Mariko, Hisao Tonami, Munetaka Matoba, et al. "Pituitary macroadenoma: Accuracy of apparent diffusion coefficient magnetic resonance imaging in grading tumor aggressiveness." Neuroradiology Journal 32, no. 2 (2019): 86–91. http://dx.doi.org/10.1177/1971400919825696.

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Purpose The purpose of this study is to evaluate the accuracy of apparent diffusion coefficient magnetic resonance imaging in grading tumor aggressiveness using histogram apparent diffusion coefficient values. Materials and methods Eighteen patients with surgically proved pituitary macroadenomas were included in this study. Diffusion-weighted imaging with single-shot echo-planar sequence at 3-T with a 32-channel head coil was performed with b values of 0 and 1000 s/mm2. Calculated apparent diffusion coefficient maps were generated, and a 3-D volume of interest was placed on the tumor while sup
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Idemitsu, Kazuya, Kazuyuki Fujii, Noriyuki Maeda, et al. "Effect of Carbonate on the Migration Behavior of Lanthanides in Compacted Bentonite." MRS Advances 3, no. 21 (2018): 1155–60. http://dx.doi.org/10.1557/adv.2018.184.

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ABSTRACTThe apparent diffusion coefficients of La, Nd, Eu, Dy, Er, and Lu in compacted bentonites were investigated at various bicarbonate concentrations. The apparent diffusion coefficients of these lanthanides tended to decrease with increasing dry density. At bicarbonate concentrations below 0.25 M, lanthanum had the largest diffusion coefficient (ca. 10-13 m2/s) at 1.0 Mg/m3, and the diffusion coefficient decreased with increasing atomic number. On the other hand, at bicarbonate concentrations above 0.25 M, lutetium had the largest diffusion coefficient, and the diffusion coefficient decre
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Zhu, Jie, Jie Zhang, Jia-Yin Gao, et al. "Apparent diffusion coefficient normalization of normal liver." Medicine 96, no. 3 (2017): e5910. http://dx.doi.org/10.1097/md.0000000000005910.

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Teixeira, Sara Reis, Paula Condé Lamparelli Elias, Andrea Farias de Melo Leite, Tatiane Mendes Gonçalves de Oliveira, Valdair Francisco Muglia, and Jorge Elias Junior. "Apparent diffusion coefficient of normal adrenal glands." Radiologia Brasileira 49, no. 6 (2016): 363–68. http://dx.doi.org/10.1590/0100-3984.2015.0045.

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Abstract Objective: To assess the feasibility and reliability of apparent diffusion coefficient (ADC) measurements of normal adrenal glands. Materials and methods: This was a retrospective study involving 32 healthy subjects, divided into two groups: prepubertal (PreP, n = 12), aged from 2 months to 12.5 years (4 males; 8 females); and postpubertal (PostP, n = 20), aged from 11.9 to 61 years (5 males; 15 females). Diffusion-weighted magnetic resonance imaging (DW-MRI) sequences were acquired at a 1.5 T scanner using b values of 0, 20, 500, and 1000 s/mm2. Two radiologists evaluated the images.
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Herneth, Andreas M., Marcel O. Philipp, Jonathan Naude, et al. "Vertebral Metastases: Assessment with Apparent Diffusion Coefficient." Radiology 225, no. 3 (2002): 889–94. http://dx.doi.org/10.1148/radiol.2253011707.

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Bourne, Roger M. "The trouble with apparent diffusion coefficient papers." Journal of Medical Radiation Sciences 62, no. 2 (2015): 89–91. http://dx.doi.org/10.1002/jmrs.110.

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Dissertations / Theses on the topic "Apparent diffusion coefficient"

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Demir, Ayhan. "Apport de l'imagerie de diffusion avec calcul du coefficient apparent de diffusion et du tenseur de diffusion dans la myélopathie cervicarthrosique." Bordeaux 2, 2000. http://www.theses.fr/2000BOR23058.

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Silva, Matthew S. "NMR characterization of changes in the apparent diffusion coefficient of water following transient cerebral ischemia." Link to electronic thesis, 2002. http://www.wpi.edu/Pubs/ETD/Available/etd-0327102-221251.

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Onishi, Natsuko. "Apparent Diffusion Coefficient as a Potential Surrogate Marker for Ki-67 Index in Mucinous Breast Carcinoma." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225449.

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Iima, Mami. "Apparent Diffusion Coefficient as an MR Imaging Biomarker of Low-Risk Ductal Carcinoma in Situ: A Pilot Study." Kyoto University, 2014. http://hdl.handle.net/2433/188640.

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Gauthier, Yvan. "Measurement of the apparent diffusion coefficient of water in white matter using magnetic resonance imaging, a phantom study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0016/MQ48500.pdf.

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Umemura, Atsushi. "Diagnostic Accuracy of Apparent Diffusion Coefficient and 123I-Metaiodobenzylguanidine for Differentiation of Multiple System Atrophy and Parkinson's Disease." Kyoto University, 2015. http://hdl.handle.net/2433/200316.

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Pathak, Ryan. "Investigating methods to improve sensitivity of the Apparent Diffusion Coefficient, a potential imaging biomarker of treatment response, for patients with colorectal liver metastasis." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/investigating-methods-to-improve-sensitivity-of-the-apparent-diffusion-coefficient-a-potential-imaging-biomarker-of-treatment-response-for-patients-with-colorectal-liver-metastasis(cf5b0308-7959-40ea-832e-862b7b816e26).html.

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Radiological imaging already has a key role in the detection and management of patients with metastatic colorectal cancer (mCRC). With the evolution of personalised medicine there is a need for non-invasive imaging biomarkers that can detect early tumour response to targeted therapies. Translation from bench to bedside requires a multicentre approach that follows an agreed development roadmap to ensure that the proposed biomarker is precise (reproducible/ repeatable) and accurate in its characterisation of a meaningful physiological, pathological or post treatment response. The following thesi
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Mosavi, Firas. "Whole-Body MRI including Diffusion-Weighted Imaging in Oncology." Doctoral thesis, Uppsala universitet, Enheten för radiologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-209777.

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Cancer is one of the major causes of worldwide mortality. Imaging plays a vital role in the staging, follow-up, and evaluation of therapeutic response in cancer patients. Whole-body (WB) magnetic resonance imaging (MRI), as a non-ionizing imaging technique, is a promising procedure to assess tumor spreading in a single examination. New MRI technological developments now enable the application of diffusion-weighted imaging (DWI) of the entire body. DWI reflects the random motion of water molecules and provides functional information of body tissues. DWI can be quantified with the use of the app
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Rosso, Charlotte. "Prédiction de la récupération après un accident ischémique carotidien grâce à la séquence de diffusion : de la pénombre ischémique aux échelles cliniques." Paris 6, 2009. http://www.theses.fr/2009PA066299.

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Ce travail de thèse consiste en l’étude de la prédiction du handicap à l’aide de la séquence IRM pondérée en diffusion (DWI). Dans un premier temps, nous nous sommes intéressés à la prédiction du volume final de l’infarctus grâce à un algorithme d’analyse d’images basé sur le traitement de la cartographie du coefficient apparent de diffusion (ADC) sur 216 patients (<6H). La croissance prédite et réelle de l’infarctus étaient significativement corrélées (0,478, p<0,0001). La méthode distinguait les « infarctus stables » des « infarctus en évolution » avec une sensibilité de 77 % et une spécific
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Himoto, Yuki. "Pretreatment Mean Apparent Diffusion Coefficient Is Significantly Correlated With Event-Free Survival in Patients With International Federation of Gynecology and Obstetrics Stage Ib to IIIb Cervical Cancer." Kyoto University, 2016. http://hdl.handle.net/2433/215383.

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This is a non-final version of an article published in final form in International Journal of Gynecological Cancer. Final publication is available at http://journals.lww.com/ijgc/Pages/default.aspx<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(医学)<br>甲第19557号<br>医博第4064号<br>新制||医||1013(附属図書館)<br>32593<br>京都大学大学院医学研究科医学専攻<br>(主査)教授 武藤 学, 教授 平岡 眞寛, 教授 古川 壽亮<br>学位規則第4条第1項該当
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Book chapters on the topic "Apparent diffusion coefficient"

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Chen, Y., W. Guo, Q. Zeng, X. Yan, M. Rao, and Y. Liu. "Apparent Diffusion Coefficient Approximation and Diffusion Anisotropy Characterization in DWI." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11505730_21.

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Fiebach, J. B., P. D. Schellinger, S. Heiland, and K. Sartor. "Conventional MRI, Diffusion-weighted MRI (DWI) and Apparent Diffusion Coefficient (ADC)." In Stroke MRI. Steinkopff, 2003. http://dx.doi.org/10.1007/978-3-642-57387-3_4.

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Yamasaki, Fumiyuki, Kazuhiko Sugiyama, and Kaoru Kurisu. "Brain Tumors: Apparent Diffusion Coefficient at Magnetic Resonance Imaging." In Methods of Cancer Diagnosis, Therapy, and Prognosis. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8665-5_22.

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Kim, Yunho, Paul M. Thompson, Arthur W. Toga, Luminita Vese, and Liang Zhan. "HARDI Denoising: Variational Regularization of the Spherical Apparent Diffusion Coefficient sADC." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02498-6_43.

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Righini, A., C. Pierpaoli, J. R. Alger, M. Leonardi, and G. Di Chiro. "Apparent diffusion coefficient alterations associated with experimental complex partial status epilepticus." In Proceedings of the XV Symposium Neuroradiologicum. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79434-6_124.

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Nakamura, Takashi, Misa Sumi, and Marc Van Cauteren. "Salivary Gland Tumors: Preoperative Tissue Characterization with Apparent Diffusion Coefficient Mapping." In Methods of Cancer Diagnosis, Therapy, and Prognosis. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3186-0_18.

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Baraldo, Stefano, Francesca Ieva, Luca Mainardi, and Anna Maria Paganoni. "Estimation Approaches for the Apparent Diffusion Coefficient in Rice-Distributed MR Signals." In Contributions to Statistics. Springer Milan, 2012. http://dx.doi.org/10.1007/978-88-470-2871-5_2.

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Jerome, Neil Peter, and João S. Periquito. "Analysis of Renal Diffusion-Weighted Imaging (DWI) Using Apparent Diffusion Coefficient (ADC) and Intravoxel Incoherent Motion (IVIM) Models." In Methods in Molecular Biology. Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-0978-1_37.

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AbstractAnalysis of renal diffusion-weighted imaging (DWI) data to derive markers of tissue properties requires careful consideration of the type, extent, and limitations of the acquired data. Alongside data quality and general suitability for quantitative analysis, choice of diffusion model, fitting algorithm, and processing steps can have consequences for the precision, accuracy, and reliability of derived diffusion parameters. Here we introduce and discuss important steps for diffusion-weighted image processing, and in particular give example analysis protocols and pseudo-code for analysis
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Winslow, James L. "Apparent Diffusion Coefficient Estimation Errors from Using Ratio of Bound to Unbound Ca2+." In The Neurobiology of Computation. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2235-5_6.

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Osawa, T., M. Mase, T. Miyati, et al. "Delta-ADC (Apparent Diffusion Coefficient) Analysis in Patients with Idiopathic Normal Pressure Hydrocephalus." In Acta Neurochirurgica Supplementum. Springer Vienna, 2012. http://dx.doi.org/10.1007/978-3-7091-0956-4_38.

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Conference papers on the topic "Apparent diffusion coefficient"

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Andrade, C., M. A. Sanjuán, and C. Alonso. "Measurement of Chloride Diffusion Coefficient from Migration Tests." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93319.

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Abstract A critical review is offered on the Rapid Chloride Permeability Test standarized by AASHTO, pointing out its limitations and errors but recognizing its contribution to the developing of a simple and quick test for chloride migration. Then another review is made on the electrochemical fundaments of the processes developped in concrete when an electrical field is applied and on the basic equations of mass transport (Nernst-Plank and Nernst-Einstein) which can be applied to calculate ionic movements. The limitations and assumptions needed for a simplified resolution of these equations, a
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Aldykiewicz, Anthony, Neal S. Berke, Robert J. Hoopes, and Lianfang Li. "Long-Term Behavior of Fly Ash and Silica Fume Concretes in Laboratory and Field Exposures to Chlorides." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05253.

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Abstract Corrosion of steel in concrete in concrete due to the ingress of chloride is a major factor in the premature failure of steel reinforced concretes. Thus changes in the concrete mixture to reduce permeability to chloride are highly desirable. Lowering the water-to-cementitious ratio (w/cm) is a very effective means of reducing permeability. Pozzolans such as fly ash and silica fume are very effective in reducing the apparent diffusion coefficient for chloride at a given w/cm. Typically, most of the reduction in diffusion with silica fume occurs within the first 28 days, whereas fly ash
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Elboujdaini, M., R. W. Revie, and C. DeRushie. "Effects of Metallurgical Parameters and Non-Metallic Inclusions on Behaviour for Oil and Gas Industry Steels on Hydrogen Induced Cracking." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03528.

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Abstract Two types of cracking, namely sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC), were evaluated in linepipe steels using NACE standard solution to establish the metallurgical parameters that control HIC and SSC. Quantitative experiments indicate a threshold hydrogen concentration for HIC below which no cracking will initiate. Propagation of cracks occurs by hydrogen assisted fracture of the matrix surrounding the site where initiation occurs. The SSC and HIC susceptibility of steels containing Cr, Ni, and Mo under stress and hydrogen diffusion was investigated by catho
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Kushida, T., M. Ueda, T. Kudo, T. Kobayashi, and A. Nakahara. "SSC Susceptibility and its Evaluation Method of 13Cr Martensitic Steel." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93124.

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Abstract Conventional 0.2C-13Cr martensitic steel has a higher SSC susceptibility in NACE TM-01-77 solution (0.5% acetic acid + 5% NaCl, 25°C(75°F), saturated with 0.1MPa (15psi) H2S) and in the modified NACE solution (0.5% acetic acid + 5% NaCl, 25°C(75°F), 0.01MPa (1.5psi) H2S) than low alloy steel. This is due to a higher hydrogen content (C0) in 13Cr steel although the threshold hydrogen content (Cth) for SSC is almost the same as that of low alloy steel with same strength. The reason why 13Cr steel has a higher C0 is because it has a smaller apparent diffusion coefficient (D) of hydrogen
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Campion, R. P. "High Pressure Permeation and Diffusion of Gases in Elastomers and Thermoplastics." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91456.

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Abstract From classical theory, gas permeation rate through an elastomeric membrane from high pressure to low depends directly on the applied pressure differential. However, at several hundred atmospheres, the elastomer can apparently be consolidated, to reduce permeation rate. As a contrast, swelling also occurs in some other cases. Many permeation coefficients have been obtained at these pressures for the permeation at different temperatures of several gases through various polymers, and data rationalized. Use of a device to measure the thickness of the pressurized sample membrane in situ ha
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Ohno, Naoki, Toshio Osada, Chihiro Tabata, et al. "Homogenization During Solution Heat Treatment of Ni-Base Single-Crystal Superalloy TMS-238." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0814.

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Abstract To maximize the mechanical properties of Ni-base superalloys, solution heat treatment is essential to sufficiently homogenize the dendritic segregations formed during solidification. To investigate the homogenization behavior during solution heat treatment, a Ni-base single crystal superalloy, TMS-238, was heat treated under various conditions; temperatures ranging from 1573 to 1613 K for times ranging from 2 to 100 h. After solution heat treatment, the average concentrations of Re, an element that exhibits the highest degree of segregation, in dendrite core and inter-dendritic region
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Charvin, Stephanie, William H. Hartt, Seungkyoun Lee, and Rodney G. Powers. "Influence of Premeability Reducing and Corrosion Inhibiting Admixtures in Concrete upon Initiation of Salt Induced Embedded Steel Corrosion." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00802.

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Abstract While the utility of permeability reducing and corrosion inhibiting admixtures in concrete for forestalling the onset of corrosion initiation is generally recognized, there remains a general non-availability of long-term data upon which quantitative performance projections can be made. Of particular concern is that, while the rate of chloride ingress may be less for high performance concretes with pozzolanic admixtures compared to ordinary Portland cement concretes, the threshold chloride concentration for passive film breakdown and onset of active corrosion has been projected to be l
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Todd, Nick, E. K. Jeong, and Dennis L. Parker. "Alternatives to Phase Map Thermometry: Apparent Diffusion Coefficient and Spectroscopy." In 6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND. AIP, 2007. http://dx.doi.org/10.1063/1.2744287.

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Albu, Teodora-Anca, Stanca-Mihaela Ples, and Iosif Malaescu. "Quantitative approach of diffusion-weighted imaging apparent diffusion coefficient concerning characterization of benign cranial meningiomas." In 2017 E-Health and Bioengineering Conference (EHB). IEEE, 2017. http://dx.doi.org/10.1109/ehb.2017.7995499.

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Cameron, A., J. Glaister, A. Wong, and M. A. Haider. "Non-parametric Bayesian estimation of apparent diffusion coefficient from diffusion-weighted magnetic resonance imaging data." In 2012 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2012. http://dx.doi.org/10.1109/embc.2012.6345955.

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Reports on the topic "Apparent diffusion coefficient"

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MR (Diffusion-Weighted Imaging (DWI) of the Apparent Diffusion Coefficient (ADC), Clinically Feasible Profile. Chair Michael Boss, Dariya Malyarenko, and Daniel Margolis. Radiological Society of North America (RSNA) / Quantitative Imaging Biomarkers Alliance (QIBA), 2022. http://dx.doi.org/10.1148/qiba/20221215.

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The goal of a QIBA Profile is to help achieve a useful level of performance for a given biomarker. The Claim (Section 2) describes the biomarker performance and is derived from the body of scientific literature meeting specific requirements, in particular test-retest studies. The Activities (Section 3) contribute to generating the biomarker. Requirements are placed on the Actors that participate in those activities as necessary to achieve the Claim. Assessment Procedures (Section 4) for evaluating specific requirements are defined as needed to ensure acceptable performance. Diffusion-Weighted
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Zhang, Subo, Jinxin Wan, Yongjun Xu, et al. Predictive value of multiparametric magnetic resonance imaging (T2-weighted imaging and apparent diffusion coefficient) for pathological grading of prostate cancer: a meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2025. https://doi.org/10.37766/inplasy2025.2.0044.

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