T2-weighted MR imaging of the chest: Comparison of electrocardiograph-triggered conventional and turbo spin-echo and nontriggered turbo spin-echo sequences

✍ Scribed by John L. Haddad; Neil M. Rofsky; Michael M. Ambrosino; David P. Naidich; Jeffrey C. Weinreb

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 604 KB
• Volume: 5
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.1880050317

✦ Synopsis

In 22 patients with a diverse range of thoracic abnormalities, T2-weighted magnetic resonance (MR) images of the chest were obtained with electrocardiograph (ECG)-triggered turbo spin-echo (TSE), ECG-triggered conventional spin-echo (CSE), and nontriggered TSE sequences, and the images were compared. A 6-point rating scale was used by three radiologists experienced in MR imaging of the chest to independently evaluate the images for [4 freedom from ghosting, @) clarity of heart wall and cardiac chambers, [c) clarity of mediastinal structures, [d) conspicuity of abnormalities, and [e) overall image quality. Evaluations were analyzed with statistical methods. For freedom from ghosting, clarity of heart wall and cardiac chambers, clarity of mediastinal structures, and overall image quality, the ECG-triggered TSE Images were rated higher than the TSE images, which, in turn. were rated higher than the ECGtriggered CSE images at the P = .05 level of sig nificance. No significant Werences were seen between the pulse sequences in the conspicuity of abnormalities. although some differences were observed in individual cases. Our results suggest that ECG-triggered TSE imaging provides improved, time-efficient TI-weighted Images of the chest.