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Cardiac atria and their appendages in mitral disease. ACT study.

After a bolus injection of contrast medium 15 patients with mitral disease were scanned with 10 to 15 degrees caudal inclination of the gantry. Optimal visualisation of atrial appendages and good visualisation of the atria and pulmonary veins was achieved. CT detection and localization of atrial thrombi was verified surgically; sensitivity was 75 percent and specificity was 92 percent.