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Volumetric velocity measurements in restricted geometries using spiral sampling: a phantom study
- Source :
- Magma; 28(2), pp 103-118 (2015)
- Publication Year :
- 2015
- Publisher :
- Springer, 2015.
-
Abstract
- The aim of this study was to evaluate the accuracy of maximum velocity measurements using volumetric phase-contrast imaging with spiral readouts in a stenotic flow phantom. In a phantom model, maximum velocity, flow, pressure gradient, and streamline visualizations were evaluated using volumetric phase-contrast magnetic resonance imaging (MRI) with velocity encoding in one (extending on current clinical practice) and three directions (for characterization of the flow field) using spiral readouts. Results of maximum velocity and pressure drop were compared to computational fluid dynamics (CFD) simulations, as well as corresponding low-echo-time (TE) Cartesian data. Flow was compared to 2D through-plane phase contrast (PC) upstream from the restriction. Results obtained with 3D through-plane PC as well as 4D PC at shortest TE using a spiral readout showed excellent agreements with the maximum velocity values obtained with CFD (
- Subjects :
- Flow (psychology)
Physics::Medical Physics
Biophysics
Arterial Occlusive Diseases
Computational fluid dynamics
Sensitivity and Specificity
Imaging phantom
Optics
Sampling (signal processing)
Image Interpretation, Computer-Assisted
Humans
Radiology, Nuclear Medicine and imaging
Pressure gradient
Spiral
Pressure drop
Physics
Blood Volume
Blood Volume Determination
Radiological and Ultrasound Technology
Phantoms, Imaging
business.industry
Drop (liquid)
Reproducibility of Results
Arteries
Mechanics
Image Enhancement
Sample Size
business
Algorithms
Blood Flow Velocity
Magnetic Resonance Angiography
Radiology, Nuclear Medicine and Medical Imaging
Subjects
Details
- Language :
- English
- ISSN :
- 13528661
- Database :
- OpenAIRE
- Journal :
- Magma; 28(2), pp 103-118 (2015)
- Accession number :
- edsair.doi.dedup.....f27a09e0f13886025c2058b89c6bd2fa