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Feasibility of contrast-enhanced coronary artery magnetic resonance angiography using compressed sensing
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Feasibility of contrast-enhanced coronary artery magnetic resonance angiography using compressed sensing
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Journal Article
Feasibility of contrast-enhanced coronary artery magnetic resonance angiography using compressed sensing
2020
Overview
Background
Coronary magnetic resonance angiography (CMRA) is a promising technique for assessing the coronary arteries. However, a disadvantage of CMRA is the comparatively long acquisition time. Compressed sensing (CS) can considerably reduce the scan time. The aim of this study was to verify the feasibility of CS CMRA scanning during the waiting time between contrast injection and late gadolinium enhancement (LGE) scan in a clinical protocol.
Methods
Fifty clinical patients underwent contrast-enhanced CS CMRA and conventional CMRA on a 3 T CMR scanner. After contrast injection, CS CMRA was scanned during the waiting time for LGE CMR. A conventional CMRA scan was performed after LGE CMR. We assessed acquisition times and coronary artery image quality for each segment on a 4-point scale. Visible vessel length, sharpness and diameter of right (RCA), left anterior descending (LAD), and left circumflex (LCX) coronary arteries were also quantitatively compared among the scans.
Results
All CS CMRA scans were successfully performed within the LGE waiting time. The median total scan time was 207 s (163, 259 s) for CS and 785 s (698, 975 s) for conventional CMRA (
p
< 0.001). No significant differences were observed in image quality scores, vessel length measurements, sharpness, and diameter between CS and conventional CMRA.
Conclusions
We could achieve all CS CMRA scans within the LGE waiting time. Contrast-enhanced CS CMRA could considerably shorten the scan time while maintaining image quality compared with conventional CMRA.
Publisher
BioMed Central,BioMed Central Ltd,Elsevier
Subject
/ Aged
/ Arteries
/ Cardiovascular magnetic resonance
/ Contrast Media - administration & dosage
/ Coronary Angiography - methods
/ Coronary Artery Disease - diagnostic imaging
/ Coronary magnetic resonance angiography
/ Coronary Vessels - diagnostic imaging
/ Female
/ Heart
/ Humans
/ Image Interpretation, Computer-Assisted
/ Imaging
/ Japan
/ Magnetic Resonance Angiography
/ Magnetic Resonance Imaging, Cine
/ Male
/ Medicine
/ Organometallic Compounds - administration & dosage
/ Patients
/ Quality
/ Time
/ Workflow
