Results 291 to 300 of about 2,845,265 (325)

Apparent Diffusion Coefficient Values for Neuroendocrine Liver Metastases

Academic Radiology, 2021
We aimed to investigate whether there are any differences in apparent diffusion coefficient (ADC) values obtained from liver metastases due to gastroenteropancreatic neuroendocrine tumors (GEP-NET) and adenocarcinomas.We included 54 patients with 167 liver metastases due to gastroenteropancreatic tumors. We divided the patients into two groups as liver
Gultekin, MA, Cesme, DH, Yurtsever, I, Turk, HM, Seker, M, Besiroglu, M, Alkan, ALPAY   +6 more
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Effect of sampling on the estimation of the apparent coefficient of diffusion in MRI

2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2017
The Apparent Diffusion Coefficient (ADC) is a quantitative measure derived from MRI that is able to asses the amount of diffusion within living tissues. It is employed to characterize different diseases and to evaluate response to therapy. For ADC estimation, the diffusion signal needs to be sampled using a small number of values, presenting ...
Santiago Aja-Fernández, Oscar Pena-Nogales, Rodrigo de Luis García   +2 more
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Acinar determinants of the apparent diffusion coefficient for helium-3

Journal of Applied Physiology, 2010
The apparent diffusion coefficient (ADC) obtained by helium-3 magnetic resonance imaging over several seconds is thought to reflect diffusion impairment due to both intra- and interacinar structure. In this study, numerical simulations of intra-acinar gas mixing and effective diffusion were performed in a multiple-branch-point model of the human ...
Verbanck, Sylvia, Paiva, Manuel
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Apparent Diffusion Coefficient in Breast MRI

ISMRM Annual Meeting
Diffusion weighted Imaging (DWI) acquisitions are often part of breast cancer MRI protocols. The signal intensity decrease as a function of the b-value in diffusion imaging is non-linear and complex with inconsistent Apparent Diffusion Coefficients. In this abstract, we investigate ADC mapping computation and accuracy.
Stephane Loubrie, Maren Andreassen, Ana Rodriguez-Soto, Michael Carl, Summer Batasin, Christopher Conlin, Tyler Seibert, Michael Hahn, Joshua Kuperman, Anders Dale, Rebecca Rakow-Penner   +10 more
openaire   +1 more source

Age dependence of the renal apparent diffusion coefficient in children

Pediatric Radiology, 2003
Diffusion imaging has proved to be a powerful tool for diagnosing ischemic lesions in the brain, and the technique is now being applied to other organs, including the kidneys. For quantitative studies it is important to define the normal values of the apparent diffusion coefficient (ADC), given the important physiological changes that occur in the ...
Richard A, Jones, J Damien, Grattan-Smith   +1 more
openaire   +2 more sources

Minimum apparent diffusion coefficients in the evaluation of brain tumors

European Journal of Radiology, 2005
To determine whether diffusion-weighted imaging by using minimum apparent diffusion coefficient (ADC(min)) values could differentiate various brain tumors including gliomas, metastases, and lymphomas.We examined 65 patients with histologically or clinically diagnosed brain tumors (12 low-grade gliomas, 31 high-grade gliomas, 14 metastatic tumors, and 8
Kitis, O, Altay, H, Calli, C, Yunten, N, Akalin, T, Yurtseven, T   +5 more
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Differentiation of submandibular sialadenitis based on apparent diffusion coefficient

Oral Diseases
AbstractObjectivesThis study aimed to quantify the submandibular gland in suppurative sialadenitis, primary Sjögren's syndrome (pSS) and radiation‐induced sialadenitis using the apparent diffusion coefficient (ADC) for differential diagnosis.Subjects and MethodsThis retrospective study included 16 patients with suppurative sialadenitis (n = 9), pSS (n =
Hirotaka Muraoka, Takashi Kaneda, Takumi Kondo, Naohisa Hirahara, Yuta Kohinata, Satoshi Tokunaga   +5 more
openaire   +2 more sources

Correlating apparent diffusion coefficients with histopathologic findings on meningiomas

European Journal of Radiology, 2012
To determine whether the apparent diffusion coefficient (ADC) correlates with histopathologic findings and whether ADC values can be used to differentiate benign from atypical/malignant meningiomas.MR images were reviewed retrospectively in 138 patients with meningiomas treated between September 1997 and July 2003.
Bo, Yin, Li, Liu, Bi Yun, Zhang, Yu Xin, Li, Yuan, Li, Dao Ying, Geng   +5 more
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Meta-Analysis of Apparent Diffusion Coefficients in the Newborn Brain

Pediatric Neurology, 2009
Diffusion-weighted imaging and its quantitative apparent diffusion coefficient can assess severity in newborn hypoxic-ischemic injuries. A meta-analysis established normative values in term newborns, in comparison to those values in hypoxic-ischemic newborns with good versus poor outcomes.
Jacqueline S, Coats, Adam, Freeberg, Elaine G, Pajela, André, Obenaus, Stephen, Ashwal   +4 more
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Apparent diffusion coefficient in vasogenic edema and reactive astrogliosis

Neuroradiology, 2007
Distinguishing between vasogenic edema and reactive astrogliosis may be difficult in some instances. This study was performed to test the hypothesis that diffusion-weighted (DW) imaging with apparent diffusion coefficient (ADC) maps can be used to differentiate these two types of changes.The study population included 11 patients with perilesional ...
Thomas, Hagen, Frank, Ahlhelm, Werner, Reiche   +2 more
openaire   +2 more sources