Results 161 to 170 of about 1,191,105 (198)
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Intravoxel incoherent motion imaging of focal hepatic lesions
Journal of Magnetic Resonance Imaging, 2012AbstractPurpose:To compare diffusivity values between malignant and benign focal hepatic lesions using the intravoxel incoherent motion model.Materials and Methods:This study included 84 focal hepatic lesions in 84 patients. Final diagnoses were as follows: hepatocellular carcinoma (n = 45), cholangiocarcinoma (n = 6), metastatic liver tumor (n = 3 ...
Shintaro, Ichikawa +5 more
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Flow‐compensated intravoxel incoherent motion diffusion imaging
Magnetic Resonance in Medicine, 2014PurposeThe pseudo‐diffusion coefficient D* in intravoxel incoherent motion (IVIM) imaging was found difficult to seize. Flow‐compensated diffusion gradients were used to test the validity of the commonly assumed biexponential limit and to determine not only D*, but also characteristic timescale τ and velocity v of the incoherent motion.Theory and ...
Andreas, Wetscherek +2 more
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A versatile flow phantom for intravoxel incoherent motion MRI
Magnetic Resonance in Medicine, 2011AbstractAlthough there have been many advancements in cancer research, much is still unknown about the heterogeneous tumor microenvironment. Diffusion‐weighted MRI has proven to be a viable and versatile microstructural probe. Diffusion‐weighted sequences specifically sensitive to intravoxel incoherent motion (IVIM) have seen a recent resurgence of ...
Gene Y, Cho +5 more
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Value of intravoxel incoherent motion for differential diagnosis of renal tumors
Acta Radiologica, 2018Background Few studies have reported on the use of intravoxel incoherent motion (IVIM) for renal tumors. Purpose To investigate the value of IVIM for distinguishing renal tumors.
Qingqiang Zhu +5 more
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Effect of flow‐encoding strength on intravoxel incoherent motion in the liver
Magnetic Resonance in Medicine, 2018PurposeTo study the impact of variable flow‐encoding strength on intravoxel incoherent motion (IVIM) liver imaging of diffusion and perfusion.TheorySignal attenuation in DWI arises from (1) intravoxel microvascular blood flow, which depends on the flow‐encoding strength α (first gradient moment) of the diffusion‐encoding waveform, and (2) intravoxel ...
Kévin, Moulin +2 more
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Evaluation of myocardial microcirculation using intravoxel incoherent motion imaging
Journal of Magnetic Resonance Imaging, 2017PurposeTo explore whether cardiac magnetic resonance‐intravoxel incoherent motion imaging (MR‐IVIM) is feasible for the clinical evaluation of myocardial microcirculation.Materials and MethodsThe study included 30 patients (with hypertrophic cardiomyopathy, diabetes mellitus, hypertension, or combined diabetes and hypertension) and 34 healthy ...
Anna, Mou +6 more
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Stroke assessment with intravoxel incoherent motion diffusion‐weighted MRI
NMR in Biomedicine, 2016Intravoxel incoherent motion (IVIM) diffusion‐weighted MRI can simultaneously measure diffusion and perfusion characteristics in a non‐invasive way. This study aimed to determine the potential utility of IVIM in characterizing brain diffusion and perfusion properties for clinical stroke.
Shiteng, Suo +11 more
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Intravoxel Incoherent Motion MR Imaging of the Kidney: Pilot Study
2012MR examinations (Achieva 3 T, Philips, Best, The Netherlands) were performed at five different occasions in a healthy volunteer (male 60 years) and in one renal cancer patient (male 78 years) with normal renal function (creatinine 88 μmol/L). Intravoxel incoherent motion (IVIM) coefficients D + D* were measured using respiratory-triggered diffusion ...
Per, Eckerbom +5 more
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Intravoxel incoherent motion (IVIM) imaging in human achilles tendon
Journal of Magnetic Resonance Imaging, 2018BackgroundLimited microcirculation has been implicated in Achilles tendinopathy and may affect healing and disease progression. Existing invasive and noninvasive approaches to evaluate tendon microcirculation lack sensitivity and spatial coverage.PurposeTo develop a novel Achilles tendon intravoxel incoherent motion (IVIM) MRI protocol to overcome the ...
Kenneth Wengler +6 more
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Intravoxel incoherent motion imaging in monitoring the function of kidney allograft
Acta Radiologica, 2018BackgroundNon-invasive alternatives to percutaneous renal biopsy are sought for follow-up of renal allografts.PurposeTo evaluate the feasibility of intravoxel incoherent motion (IVIM) imaging in mo...
Katarzyna Sulkowska +7 more
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