Difficult Cardiac CT Scan Conditions

CT coronary angiography (CCTA) has become a widely accepted test for non-invasive evaluation of the heart and coronary arteries. Despite numerous technical advances, scan acquisition in the setting of high heart rate, arrhythmia, severe obesity, devices, or inability to cooperate, may be associated with artifacts and/or poor image quality. In this chapter, we discuss several difficult scan conditions and possible solutions to improve image quality.