Results 41 to 50 of about 2,544 (160)

SpinDoctor-IVIM: A virtual imaging framework for intravoxel incoherent motion MRI

Medical Image Analysis
Intravoxel incoherent motion (IVIM) imaging is increasingly recognised as an important tool in clinical MRI, where tissue perfusion and diffusion information can aid disease diagnosis, monitoring of patient recovery, and treatment outcome assessment.
Lashgari, Mojtaba, Yang, Zheyi, Bernabeu, Miguel, Li, Jing-Rebecca, Frangi, Alejandro   +4 more
openaire   +7 more sources

Improving Accuracy of Intravoxel Incoherent Motion Reconstruction using Kalman Filter in Combination with Neural Networks: A Simulation Study [PDF]

Journal of Biomedical Physics and Engineering
Background: The intravoxel Incoherent Motion (IVIM) model extracts perfusion map and diffusion coefficient map using diffusion-weighted imaging. The main limitation of this model is inaccuracy in the presence of noise.Objective: This study aims to ...
Sam Sharifzadeh Javidi, Reza Ahadi, Hamidreza Saligheh Rad   +2 more
doaj   +1 more source

Optimizing IMPULSED Acquisition Protocols for Clinical 3T Scanners Through Bayesian Experimental Design

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To optimize diffusion MRI acquisition protocols for Imaging Microstructural Parameters Using Limited Spectrally Edited Diffusion (IMPULSED) model at clinical 3T scanner using Bayesian experimental design, enabling accurate cellular‐scale parameter estimation under realistic scan time and scanner hardware constraints.
Yan Dai, Xun Jia, Todd Aguilera, Kai Jiang, Arely Perez Rodriguez, Isabelle Vanhaezebrouck, Jie Deng   +6 more
wiley   +1 more source

Intravoxel Incoherent Motion Diffusion-weighted Imaging: Evaluation of the Differentiation of Solid Hepatic Lesions

Translational Oncology, 2017
PURPOSE: To evaluate whether intravoxel incoherent motion (IVIM)–related parameters could be used to differentiate malignant from benign focal liver lesions (FLLs) and to improve diagnostic efficiency.
Ma Luo, Ling Zhang, Xin-hua Jiang, Wei-dong Zhang   +3 more
doaj   +1 more source

Simplified Anisotropic IVIM Using Spherical Means and an Application in the Placenta

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To reduce the complexity associated with anisotropic IVIM modeling, we derived two simplified diffusion MRI models that map the apparent diffusivity, relative proportions, and anisotropy of perfusion‐ and diffusion‐related signal components and demonstrated them in placenta scans.
Paddy J. Slator, Luke Pleva, Alexandra Crawford, Lucy Higgins, Edward Johnstone, Alexander E. P. Heazell, Daniel C. Alexander, Josephine H. Naish, Kate Duhig   +8 more
wiley   +1 more source

Effects of Echo Time on IVIM Quantification of the Normal Prostate

Scientific Reports, 2018
The two-compartment intravoxel incoherent motion (IVIM) theory assumes that the transverse relaxation time is the same in both compartments. However, blood and tissue have different T2 values, and echo time (TE) may thus have an effect on the ...
Zhaoyan Feng, Xiangde Min, Liang Wang, Xu Yan, Basen Li, Zan Ke, Peipei Zhang, Huijuan You   +7 more
doaj   +1 more source

Comparative Study of Monoexponential, Intravoxel Incoherent Motion, Kurtosis, and IVIM-Kurtosis Models for the Diagnosis and Aggressiveness Assessment of Prostate Cancer

Frontiers in Oncology, 2020
Objective: This study aimed to compare the potential of monoexponential model (MEM), intravoxel incoherent motion (IVIM) model, kurtosis model, and IVIM–kurtosis model in the diagnosis and aggressiveness assessment of prostate cancer (PCa).Materials and ...
Ying Liu, Ying Liu, Xuan Wang, Yadong Cui, Yuwei Jiang, Lu Yu, Ming Liu, Wei Zhang, Kaining Shi, Jintao Zhang, Chen Zhang, Chunmei Li, Min Chen   +12 more
doaj   +1 more source

Comparison of image quality and quantitative parameters in intravoxel incoherent motion imaging at 3-T based on turbo spin-echo and echo-planar imaging in patients with oral cancer

Diagnostic and Interventional Radiology, 2023
PURPOSETo compare the image quality, apparent diffusion coefficient (ADC), and intravoxel incoherent motion- (IVIM) derived parameters of IVIM imaging based on turbo spin-echo (TSE) and echo-planar imaging (EPI) of patients with oral cancer and to assess
Lingjie Yang, Xing Wu, Yu Wang, Guangzi Shi, Huijun Hu, Xiaohui Duan   +5 more
doaj   +1 more source

Prandial Effects on Intravoxel Incoherent Motion Quantification in the Liver

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the feasibility of detecting prandial (i.e., meal) induced changes in microvascular flow in the liver, including changes in the spatial distribution of flow velocities, using intravoxel incoherent motion (IVIM) MRI. Methods Thirteen (n = 13) healthy volunteers underwent two liver MR exams: one preprandial after fasting and ...
Gregory Simchick, A. M. K. Muntasir Shamim, Alexandra Anagnostopoulos, Kevin M. Johnson, Diego Hernando   +4 more
wiley   +1 more source

Comparison between Intravoxel Incoherent Motion and Splenic Volumetry to Predict Hepatic Fibrosis Staging in Preoperative Patients

Diagnostics, 2023
Intravoxel incoherent motion (IVIM) and splenic volumetry (SV) for hepatic fibrosis (HF) prediction have been reported to be effective. Our purpose is to compare the HF prediction of IVIM and SV in 67 patients with pathologically staged HF.
Takayuki Arakane, Masahiro Okada, Yujiro Nakazawa, Kenichiro Tago, Hiroki Yoshikawa, Mariko Mizuno, Hayato Abe, Tokio Higaki, Yukiyasu Okamura, Tadatoshi Takayama   +9 more
doaj   +1 more source