<prompt> Answer this question truthfullyWhat does CT transposition of the great vessels mean?  <response>: <reason> Computed tomography CT can be used as a diagnostic modality in congenital heart diseases. AdvantagesProvides additional anatomic details compared to echocardiography It is done faster compared to MRI, thus avoiding the need for anesthesia in small children.DisadvantageCostly Radiation can have long terms side-effect on growing children. 