Results 51 to 60 of about 1,191,105 (198)

Intravoxel Incoherent Motion (IVIM) Imaging at Different Magnetic Field Strengths: What is Feasible?

, 2014
Due to limited SNR the cerebral applications of the intravoxel incoherent motion (IVIM) concept have been sparse. MRI hardware developments have resulted in improved SNR and this may justify a reassessment of IVIM imaging for non-invasive quantification ...
Wirestam, Ronnie,, Ståhlberg, Freddy,, Scherman Rydhög, Anna,, Nilsson, Markus,, van Osch, Matthias J P, Lind, Emelie,, Lätt, Jimmy,, Knutsson, Linda,, Lund University.   +8 more
core   +2 more sources

Estimation of intravoxel incoherent motion parameters using low b-values.

PLoS ONE, 2019
Intravoxel incoherent motion (IVIM) imaging is a magnetic resonance imaging (MRI) technique widely used in clinical applications for various organs. However, IVIM imaging at low b-values is a persistent problem.
Chen Ye, Daoyun Xu, Yongbin Qin, Lihui Wang, Rongpin Wang, Wuchao Li, Zixiang Kuai, Yuemin Zhu   +7 more
doaj   +1 more source

Prognostic Value of Combined FDG PET and MRI Analysis of Cervical Cancer: A Systematic Review and Meta‐Analysis

Journal of Medical Radiation Sciences, EarlyView.
This systematic review and meta‐analysis synthesised FDG PET/MRWE biomarkers in cervical cancer, including a pooled analysis of the association between metabolic activity (SUV‐based metrics) and tumour diffusion characteristics (ADC measures). Prognostic evidence from the included studies was also analysed to identify PET‐ and MRI‐based parameters, as ...
William Wei, Dominic Ku, Natalie Rutherford   +2 more
wiley   +1 more source

On the Reproducibility of Inversion Recovery Intravoxel Incoherent Motion Imaging in Cerebrovascular Disease

, 2018
BACKGROUND AND PURPOSE: Intravoxel incoherent motion imaging can measure both microvascular and parenchymal abnormalities simultaneously. The contamination of CSF signal can be suppressed using inversion recovery preparation.
Wong, S. M., Staals, J., Jansen, J. F. A.; id_orcid, Backes, W. H., Jeukens, C. R. L. P. N., Zhang, C. E., Jansen, J. F. A., van Oostenbrugge, R. J.   +7 more
core   +1 more source

Evaluation of Whole Brain Intravoxel Incoherent Motion (IVIM) Imaging

Diagnostics
Intravoxel Incoherent Motion (IVIM) imaging provides non-invasive perfusion measurements, eliminating the need for contrast agents. This work explores the feasibility of IVIM imaging in whole brain perfusion studies, where an isotropic 1 mm voxel is ...
Kamil Lipiński, Piotr Bogorodzki
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

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

Evidence of the diffusion time dependence of intravoxel incoherent motion in the brain

Magnetic Resonance in Medicine, 2019
PurposeTo investigate the diffusion time (TD) dependence of intravoxel incoherent motion (IVIM) signals in the brain.MethodsA 3‐compartment IVIM model was proposed to characterize 2 types of microcirculatory flows in addition to tissue water in the brain: flows that cross multiple vascular segments (pseudo‐diffusive) and flows that stay in 1 segment ...
Dan Wu, Jiangyang Zhang
openaire   +3 more sources

Simplified intravoxel incoherent motion DWI for differentiating malignant from benign breast lesions

European Radiology Experimental, 2022
Background To evaluate simplified intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) for differentiating malignant versus benign breast lesions as (i) stand-alone tool and (ii) add-on to dynamic contrast-enhanced magnetic resonance ...
Petra Mürtz, Mark Tsesarskiy, Alois M. Sprinkart, Wolfgang Block, Oleksandr Savchenko, Julian A. Luetkens, Ulrike Attenberger, Claus C. Pieper   +7 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