Most pathologies of the aorta require multiphase MSCT-protocols, which leads to high radiation doses. Especially in patients who routinely have to undergo MSCT, like patients after endovascular aneurysm repair, dose reduction strategies are desirable. Dual Energy CT offers the possibility to create virtual non-contrast images from arterial or venous datasets and therefore decrease radiation exposure. A single phase protocol with a venous-phase CTA and a derived virtual non-contrast enhanced dataset has been evaluated in several studies for patients after endovascular aneurysm repair. Virtual non-contrast images are a reasonable approximation of true non-contrast images and can replace the latter in this patient collective. Future studies should investigate the application of virtual non-contrast images in other aortic pathologies, e.g. intramural hematoma.
KeywordsIntramural Hematoma Dual Source Endovascular Aneurysm Repair Aortic Pathology Dual Source Scanner
- Sommer WH, Theisen D, Wintersperger B, (2009) CT angiography of the aorta. Reiser MF, Becker CR, Nikolaou K, Glazer G. (eds.) 3rd ed., XII, 628 p. 982 illus., 200 in color., Hardcover 292–306Google Scholar