Objective: To compare the incidence and appearance of myocardial bridging (MB) by computed tomography (CT) angiography using 64-slice versus 256-slice CT.
Methods: In total, 775 consecutive patients who underwent coronary CT angiography were evaluated using a 64-slice or a 128x2-slice dual-source scanner.
Results: The prevalence of MB was 13.9% using 64-slice-CT and 31.5% using 256-slice-CT. The superficial type of MB segments was detected three times more frequently by 256-slice-CT.
Conclusions: A higher prevalence of MB and the superficial type of bridging were revealed with the 256- slice-CT scanner. Advances in CT technology may enable detection and potentially prevent the unwanted effects of MB.