Aortic dissection: Identification of entry site with CT virtual intravascular endoscopy

Aortic dissection is a common vascular disease which has high morbidity and mortality if it presents with acuteonset. Early diagnosis, characterisation of the type of dissection and identification of intimal tear (entry site) is important for patient management. CT angiography, especially with widely-used multislice CT imaging technique, is the method of choice for diagnosis of aortic dissection. This article presents the additional value of 3D visualisation, using virtual intravascular endoscopy, for assessment of aortic dissection when compared to conventional 2D views. The article focuses particularly on identifying the entry site of dissection with the aid of virtual intravascular endoscopy in three selected cases. It is expected that the intraluminal findings will assist radiologists to accurately diagnose and treat patients with suspected aortic dissection.