Evaluation of thoracic aortic dissection using breath-holding cine MRI
- Univ. of California, San Francisco, CA (United States); and others
Our goal was to determine if breath-hold cine MRI in transaxial planes can be used for the evaluation of thoracic aortic dissection instead of conventional cine MRI since rapid imaging is required in this clinical setting. Twelve patients with thoracic aortic dissection were imaged using a 1.5 T imager. Breath-hold images were acquired with fast cine MR sequence (TR/TE = 9/2.8, 20{degrees} flip angle) using segmented k-space data acquisition. Conventional non-breath-hold cine MR images (TR/TE = 22/7.5, 35{degrees} flip angle, 2 averages) were taken with flow and respiratory compensation. Sharpness of edges of the vessels on fast cine MR images was better than that on conventional cine MR images in 34 (57%) of 60 images. Inhomogeneous blood signal in aortic lumen due to motion artifacts was found in 2 (3%) of fast cine MR images and in 15 (25%) of conventional cine MR images. The contrast-to-noise ratios of fast cine MR images were significantly better than those of conventional cine MR images (26.4 {+-} 9.1 vs. 18.5 {+-} 10.1; p < 0.05) when the region of interest for noise was placed to include ghosting artifacts. Breath-hold cine MRI is a rapid technique that gives high quality images of thoracic aortic dissection and can provide a diagnosis in < 10 min of imaging time. 13 refs., 3 figs., 2 tabs.
- OSTI ID:
- 447051
- Journal Information:
- Journal of Computer Assisted Tomography, Journal Name: Journal of Computer Assisted Tomography Journal Issue: 1 Vol. 20; ISSN JCATD5; ISSN 0363-8715
- Country of Publication:
- United States
- Language:
- English
Similar Records
SU-E-J-234: Application of a Breathing Motion Model to ViewRay Cine MR Images
Novel Super-Resolution Approach to Time-Resolved Volumetric 4-Dimensional Magnetic Resonance Imaging With High Spatiotemporal Resolution for Multi-Breathing Cycle Motion Assessment