Improved dynamic contrast-enhanced magnetic resonance angiography (CE-MRA) using iterative data reconstruction
نویسندگان
چکیده
منابع مشابه
Improved dynamic contrast-enhanced magnetic resonance angiography (CE-MRA) using iterative data reconstruction
Background CE-MRA following the injection of a gadolinium-based contrast agent (GBCA) bolus is widely used in clinical assessment of vascular dynamics and tissue perfusion (1,2). Although keyhole techniques with an increased number of central k-space updates further improved contrast kinetics information, spatial resolution remains limited. Alternatively applied view sharing approaches also res...
متن کاملModeling Based Image Reconstruction in Time-Resolved Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA)
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...
متن کاملHigh spatial and temporal resolution dynamic contrast-enhanced magnetic resonance angiography (CE-MRA) using compressed sensing with magnitude image subtraction
PURPOSE We propose a compressed-sensing (CS) technique based on magnitude image subtraction for high spatial and temporal resolution dynamic contrast-enhanced MR angiography (CE-MRA). METHODS Our technique integrates the magnitude difference image into the CS reconstruction to promote subtraction sparsity. Fully sampled Cartesian 3D CE-MRA datasets from 6 volunteers were retrospectively under...
متن کاملInteractive Visualization of Time-Resolved Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA)
Time-resolved Magnetic Resonance Angiography (MRA) provides time-varying 3D datasets, or 4D data, that demonstrate the vascular anatomy and general flow patterns within the body. A single exam can generate 15-30 time frames of 256x256x256 images. Current commercial PACS workstations are expensive and do not provide the visualization tools necessary for interpreting this data. They are also ill ...
متن کاملContrast-enhanced magnetic resonance angiography.
With technological advances in magnetic resonance angiography (MRA), spatial resolution of 1-mm perforating vessels can reliably be visualized and accurately located in reference to patients' anatomic landmarks without exposing patients to ionizing radiation or iodinated contrast, resulting in optimal perforator selection, improved flap design, and increased surgical efficiency. As their experi...
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ژورنال
عنوان ژورنال: Journal of Cardiovascular Magnetic Resonance
سال: 2016
ISSN: 1532-429X
DOI: 10.1186/1532-429x-18-s1-o112