Abstract : Intravoxel incoherent motion (IVIM) analysis provides a means to obtain information on diffusion and perfusion from a single MRI sequence.

2019-09-30 · 1. Neuroimage. 2019 Sep 30;204:116228. doi: 10.1016/j.neuroimage.2019.116228. [Epub ahead of print] Effect of intravoxel incoherent motion on diffusion parameters in

Pris: 1619 kr. E-bok, 2018. Laddas ned direkt. Köp Intravoxel Incoherent Motion (IVIM) MRI av Denis Le Bihan, Mami Iima, Christian Federau, Eric E Sigmund på Pris: 1759 kr. Inbunden, 2018.

Intravoxel

Intravoxel incoherent motion (IVIM) imaging is a concept and a method initially introduced and developed by Le Bihan et al. to quantitatively assess all the microscopic translational motions that could contribute to the signal acquired with diffusion MRI.

(2015) Intravoxel incoherent motion diffusion-weighted MR imaging of the liver: effect of triggering methods on regional variability and measurement repeatability of quantitative parameters. Radiology 274:405–415. Article Google Scholar Background. As both intravoxel incoherent motion (IVIM) modeling and dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI) provide perfusion parameters, IVIM‐derived perfusion parameters might be expected to correlate with the kinetic features from DCE‐MRI.

To investigate the feasibility of intravoxel incoherent motion (IVIM) diffusion- weighted imaging (DW.

Background To compare different fitting methods for determining IVIM (Intravoxel Incoherent Motion) parameters and to determine whether the use of different IVIM fitting methods would affect differentiation of cervix cancer from normal cervix tissue. Methods Diffusion-weighted echo-planar imaging of 30 subjects was performed on a 3.0 T scanner with b-values of 0, 30, 100, 200, 400, 1000 s/mm2 27. Nougaret S, Vargas HA, Lakhman Y, et al. Intravoxel incoherent motion-derived histogram metrics for assessment of response after combined chemotherapy and radiation therapy in rectal cancer: initial experience and comparison between single-section and volumetric analyses. Radiology 2016; 280:446–454 [Google Scholar] Intravoxel incoherent motion perfusion MR imaging: a wake-up call. Radiology 2008;249(3):748–752. Link, Google Scholar; 12 Le Bihan D, Breton E, Lallemand D, Aubin ML, Vignaud J, Laval-Jeantet M. Separation of diffusion and perfusion in intravoxel incoherent motion MR imaging.

However, perfusion‐related parameter mapping is a persistent problem. The purpose of this paper is to investigate the IVIM parameter mapping of brain tumors using Bayesian fitting and low b‐values. Methods In this review, we discuss the principles of intravoxel incoherent motion as applied to body diffusion-weighted MRI. The evidence for the technique in measuring tissue perfusion is presented and the emerging clinical utility surveyed. The requisites and challenges of quantitative evaluation beyond simple monoexponential relationships are Intravoxel incoherent motion (IVIM) is a magnetic resonance imaging (MRI) technique that extracts microvascular perfusion information from a multi-b value diffusion-weighted imaging (DWI) sequence. 5,6 IVIM separates the incoherent blood motion in the capillary bed from the incoherent motion because of thermal motion within the DWI signal using a double exponential signal equation, 7,8 which 2016-02-10 · Background Intravoxel incoherent motion (IVIM) MR imaging has been applied in researches of various diseases, however its potential in cervical cancer patients has not been fully explored. The purpose of this study was to investigate the feasibility of IVIM MR imaging to monitor early treatment response in patients receiving concurrent chemo-radiotherapy (CCRT) for advanced cervical cancers 2018-03-19 · Background Noninvasive cardiovascular magnetic resonance (CMR) techniques including arterial spin labeling (ASL), blood oxygenation level-dependent (BOLD), and intravoxel incoherent motion (IVIM), are capable of measuring tissue perfusion-related parameters.
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doi: 10.1002/jmri.25191. Crossref Medline Google Scholar; 15.

Se hela listan på academic.oup.com Intravoxel incoherent motion imaging was performed on a 3 T magnetic resonance imaging scanner using 15 b values (0–800 s/mm 2) for 4 phantoms with different area fractions of the flowing water compartment (FWC%), at the infusion flow rates of 0, 1, 2, and 3 mL/min. Images were quantitatively analyzed using monoexponential free biexponential, and segmented biexponential fitting models. Background To compare different fitting methods for determining IVIM (Intravoxel Incoherent Motion) parameters and to determine whether the use of different IVIM fitting methods would affect differentiation of cervix cancer from normal cervix tissue.
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signalbortfall (”intravoxel phase dispersion”) ytterligare till överskattning av stenoser och ocklusioner [33]. Rakare kärlförlopp, som på lår och underben, ger

Intravoxel incoherent motion imaging was performed on a 3 T magnetic resonance imaging scanner using 15 b values (0–800 s/mm 2) for 4 phantoms with different area fractions of the flowing water compartment (FWC%), at the infusion flow rates of 0, 1, 2, and 3 mL/min. Images were quantitatively analyzed using monoexponential free biexponential, and segmented biexponential fitting models.

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REVIEW: Clinical Intravoxel Incoherent Motion and Diffusion MR Imaging Iima and Le Bihan and also contribute to the diffusion signal if diffusion-coupling terms (Dxy, Dxz) exist, which is the case when the tissue feature axes do not coincide with the gradient directions used for mea-surements. This mean ADC is then not rotationally invariant.

Crossref Medline Google Scholar; 15. 2018-06-28 · Lee Y, Lee SS, Kim N, et al. (2015) Intravoxel incoherent motion diffusion-weighted MR imaging of the liver: effect of triggering methods on regional variability and measurement repeatability of quantitative parameters. Radiology 274:405–415. Article Google Scholar Background.