Results 271 to 280 of about 2,458,834 (308)

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
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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
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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
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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
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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
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Deep Learning Imaging-Based Reconstruction Improved the Image Quality of Synthetic High B-Value DWI for Prostate Lesion Detecting

Journal of Medical and Biological Engineering
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 ...
Xiuxiu Zhou, Hanxiao Zhang, Song Jiang, Jiankun Dai, Lingling Gu, Pei Zhang, Ye Fu, Jie Shi, Xinyi Wan, Meiling Xu, Shiyuan Liu, Li Fan   +11 more
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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
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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
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Accelerated Multi-b-Value DWI Using Deep Learning Reconstruction: Image Quality Improvement and Microvascular Invasion Prediction in BCLC Stage A Hepatocellular Carcinoma

Academic Radiology
To investigate the effect of accelerated deep-learning (DL) multi-b-value DWI (Mb-DWI) on acquisition time, image quality, and predictive ability of microvascular invasion (MVI) in BCLC stage A hepatocellular carcinoma (HCC), compared to standard Mb-DWI.Patients who underwent liver MRI were prospectively collected.
Yongjian, Zhu, Peng, Wang, Bingzhi, Wang, Bing, Feng, Wei, Cai, Shuang, Wang, Xuan, Meng, Sicong, Wang, Xinming, Zhao, Xiaohong, Ma   +9 more
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Early detection of global cerebral anoxia: improved accuracy by high-b-value diffusion-weighted imaging with long echo time.

AJNR. American journal of neuroradiology, 2005
Early and accurate detection of global cerebral anoxia is important for determination of prognosis and further management. We evaluated whether accuracy in early detection of global cerebral anoxia was improved by high-b-value diffusion-weighted imaging (DWI) with long echo time (TE).Routine DWI (b = 1000 s/mm(2); TE = 139 ms), high-b-value DWI (b ...
Khin K, Tha, Satoshi, Terae, Toru, Yamamoto, Kohsuke, Kudo, Chihiro, Takahashi, Masaki, Oka, Shinji, Uegaki, Kazuo, Miyasaka   +7 more
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