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The Value of 16cm wide-detector CT in Coronary CT Angiography with Cardiac Arrhythmia OBJECTIVE:To explore the value of the 16cm wide-detector CT scanner in CCTA for patients under free respiration and with cardiac arrhythmia.MATERIALS AND METHODS:A total of 72 patients for CCTA were scanned on a 16cmwide-detector CT(GE Revolution).