Results 261 to 270 of about 22,120,804 (300)

Improved effects of the b-value for 2000 sec/mm2 DWI on an accurate qualitative and quantitative assessment of rectal cancer

Arab Journal of Gastroenterology, 2023
A higher b-value Diffusion-weighted imaging (DWI) would improve the contrast between cancerous and noncancerous tissue. Apparent diffusion coefficient (ADC)-histogram analysis is a method that can provide statistical data and quantitative information on tumor heterogeneity.
Zhihua, Lu, Kaijian, Xia, Heng, Jiang, Xiaoyan, Weng, Mei, Wu   +4 more
openaire   +2 more sources

Damage Quantification Using an Improved b-Value for Concrete Slabs

2019
Quantitative evaluation of concrete bridge decks is in high demand to establish a rational maintenance program. Visual inspections, sounding with tapping, or core samples have so far been used to determine the level of damage in the maintenance program.
T. Shiotani, C. Granier, K. Hashimoto
openaire   +1 more source

Whole-Body MRI with an Ultrahigh b-Value of 2000 s/mm2 Improves the Specificity of Diffusion-Weighted Imaging in Patients with Plasma Cell Dyscrasias

Academic Radiology, 2022
Our study compared sensitivity, specificity, and accuracy of whole-body diffusion-weighted imaging (WB-DWI) using a b-value of 2000 s/mm2 with that of the commonly used b-value of 800 s/mm2 for depiction of active tumor sites in patients with plasma cell diseases.
Anke, Heidemeier, Annette, Thurner, Corona, Metz, Thomas, Pabst, Heike, Heidemeier, Leo, Rasche, K Martin, Kortüm, Hermann, Einsele, Robert, Grimm, Elisabeth, Weiland, Thorsten Alexander, Bley   +10 more
openaire   +2 more sources

Improved detectability of experimental allergic encephalomyelitis in excised swine spinal cords by high b-value q-space DWI

Experimental Neurology, 2005
Experimental allergic encephalomyelitis (EAE) is the primary experimental model of multiple sclerosis (MS), which involves both inflammation and demyelination and is known to be species-dependent. Spinal cord abnormalities were found in more than 80% of postmortem specimens of MS patients. In the present study, T1, T2 and high b-value q-space diffusion-
Inbal E, Biton, Adi, Mayk, Dvora, Kidron, Yaniv, Assaf, Yoram, Cohen   +4 more
openaire   +2 more sources

The application of a new sampling theorem for non-bandlimited signals on the sphere: Improving the recovery of crossing fibers for low b-value acquisitions

Medical Image Analysis, 2016
Recent development in sampling theory now allows the sampling and reconstruction of certain non-bandlimited functions on the sphere, namely a sum of weighted Diracs. Because the signal acquired in diffusion Magnetic Resonance Imaging (dMRI) can be modeled as the convolution between a sampling kernel and two dimensional Diracs defined on the sphere ...
Samuel Deslauriers-Gauthier, Pina Marziliano, Michael Paquette, Maxime Descoteaux   +3 more
openaire   +4 more sources

Improved characterization of cerebral infarction using combined tissue T2 and high b-value diffusion MRI in post-thrombectomy patients: a feasibility study

Acta Radiologica, 2019
Background The utility of incorporating both diffusion information and T2 relaxation times in the imaging work-up of stroke patients is being investigated in a number of clinical trials and scientific studies. However, these tissue characteristics are often determined both qualitatively and independent of each ...
Roshan A Karunamuni, Nathan S White, Annette Fromm, Gunnar Moen, Eli Renate Grüner, Anders M Dale, Leif Oltedal   +6 more
openaire   +2 more sources

TECHNICAL ARTICLE: Fusion of high b‐value diffusion‐weighted and T2‐weighted MR images improves identification of lymph nodes in the pelvis

Journal of Medical Imaging and Radiation Oncology, 2010
SummaryAccurate identification of lymph nodes facilitates nodal assessment by size, morphological or MR lymphographic criteria. We compared the MR detection of lymph nodes in patients with pelvic cancers using T2‐weighted imaging, and fusion of diffusion‐weighted imaging (DWI) and T2‐weighted imaging.Twenty patients with pelvic tumours underwent 5‐mm ...
N Mir, SA Sohaib, D Collins, DM Koh
openaire   +1 more source

Deep learning imaging-based reconstruction improved the image quality of synthetic high b-value DWI for prostate lesion detecting

ISMRM Annual Meeting
Motivation: Synthetic-DWI (SyDWI) at high-b-value, derived from low-b-value DWI, might be beneficial for prostate cancer evaluation due to better conspicuity of lesions. Relative to conventional reconstruction (ConR), a vendor-provided deep learning reconstruction (DLR) has been reported for improving imaging quality in aspects of higher SNR and ...
Li Fan, Xiuxiu Zhou, Hanxiao Zhang, Jiankun Dai, Jie Shi, Song Jiang, Lingling Gu, Pei Zhang   +7 more
openaire   +2 more sources

An Improved Approximation to the Estimation of the Critical F Values in Best Subset Regression

Journal of Chemical Information and Modeling, 2006
Variable selection methods are routinely applied in regression modeling to identify a small number of descriptors which "best" explain the variation in the response variable. Most statistical packages that perform regression have some form of stepping algorithm that can be used in this identification process. Unfortunately, when a subset of p variables
David W. Salt, Subhash Ajmani, Ray Crichton, David J. Livingstone   +3 more
openaire   +3 more sources

Fusion of high b-value diffusion-weighted and T2-weighted MR images improves identification of lymph nodes in the pelvis.

Journal of medical imaging and radiation oncology, 2010
Accurate identification of lymph nodes facilitates nodal assessment by size, morphological or MR lymphographic criteria. We compared the MR detection of lymph nodes in patients with pelvic cancers using T2-weighted imaging, and fusion of diffusion-weighted imaging (DWI) and T2-weighted imaging.
N, Mir, S A, Sohaib, D, Collins, D M, Koh   +3 more
openaire   +1 more source