Buildup of image quality in view-shared time-resolved 3D CE-MRA
نویسندگان
چکیده
منابع مشابه
Image quality characterization in Time-Resolved 3D CE-MRA
TARGET AUDIENCE: Accelerated imaging and reconstruction techniques. PURPOSE: Time-resolved 3D contrast-enhanced MR angiography (CE-MRA) often requires highly accelerated imaging to achieve clinically required temporal and spatial resolutions. Recently developed non-linear reconstruction schemes, e.g. compressed sensing (CS) and HYPR, offer substantially greater acceleration than past methods bu...
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We have worked on the measurement protocol and related image reconstruction of 4D data sets in the field of time-resolved Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA). The method aims at improving the interpolation of sparsely sampled -space data. It is based on exploiting prior knowledge on the time courses (TCs) of the image pixels, when monitoring the uptake of contrast agents i...
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INTRODUCTION The use of a pre-contrast reference image, referred to as a mask, to suppress background signal and improve output contrast-to-noise ratio (CNR) through subtraction is common in contrast-enhanced MR angiography. It is critical that this operation be performed to optimize output image quality. As has been previously reported [1-3] it is advantageous to use complex subtraction for th...
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T. A. Cashen, J. C. Carr, M. T. Walker, J. K. Hopkins, W. Shin, T. J. Carroll Biomedical Engineering, Northwestern University, Chicago, IL, United States, Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States Introduction Multi-phase angiography is necessary for the diagnosis of vascular disorders involving arteriovenous shunting, retrograde flow, and collat...
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Introduction Vastly undersampled Isotropic Projection Reconstruction (VIPR) [1] techniques have been successfully utilized for time-resolved contrast-enhanced MR angiography (CE-MRA) studies. There are several benefits of a VIPR k-space trajectory, including the more benign nature of undersampling artifacts, which can facilitate higher undersampling factors. Due to the geometry of the legs, how...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2012
ISSN: 0740-3194
DOI: 10.1002/mrm.24466