Evaluation of thoracic aortic dissection using breath-holding cine MRI

Hajime Sakuma, Michael W. Bourne, Margaret O'Sullivan, Scot H. Merrick, Daniel J. Ullyot, Kanu Chatterjee, Ann Shimakawa, Thomas K. Foo, Charles B. Higgins

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: 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. Materials and Methods: 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° flip angle) using segmented k-space data acquisition. Conventional non-breath-hold cine MR images (TR/TE = 22/7.5, 35° flip angle, 2 averages) were taken with flow and respiratory compensation. Results: 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. Conclusion: Breath-hold cine MRI is a rapid technique that gives high quality images of thoracic aortic dissection and can provide a diagnosis in

Original languageEnglish (US)
Pages (from-to)45-50
Number of pages6
JournalJournal of Computer Assisted Tomography
Volume20
Issue number1
DOIs
StatePublished - 1996
Externally publishedYes

Keywords

  • Aorta, dissection
  • Aorta, thoracic
  • Magnetic resonance imaging
  • Magnetic resonance imaging, cine

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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