Improved visual delineation of the intimal flap in Stanford type A and B dissections at 3rd generation dual-source high-pitch CT angiography

• DOI: 10.1007/s11547-016-0634-5
• Publication Date: 2016-04-21T10:10:35Z
• Authors: Martin Beeres; Andreas M. Bucher; Julian L. Wichmann; Claudia Frellesen; Jan E. Scholtz; Moritz Albrecht; Boris Bodelle; Nour-Eldin A. Nou...; Clara Lee; Moritz Kaup; Thomas J. Vogl; Tatjana Gruber-Rouh
• Keywords: Adult; Aged, 80 and over; Male; Computed Tomography Angiography; Cardiac-Gated Imaging Techniques; Contrast Media; Middle Aged; Aortic Aneurysm; Iopamidol; Aortic Dissection; 03 medical and health sciences; 0302 clinical medicine; Humans; Radiographic Image Interpretation, Computer-Assisted; Female; Tunica Intima; Aged; Retrospective Studies

Evaluation of the intimal flap visibility comparing 2nd and 3rd generation dual-source high-pitch CT.Twenty-five consecutive patients with aortic dissection underwent CT angiography on a second and third generation dual-source CT scanner using prospective ECG-gated high-pitch dual-source CT acquisition mode. Contrast material, saline flush and flow rate were kept equal for optimum comparability. The visibility of the intimal flap as well as the delineation of the different vascular structures was evaluated.In 3rd generation dual-source high-pitch CT we could show a significant improvement of intimal flap visibility in aortic dissection. Especially, the far end of the dissection membrane could be better evaluated in 3rd generation high-pitch CT, reaching statistical significance (P < 0.01).3rd Generation high-pitch CT angiography shows a better delineation of the aortic intimal flap in a small patient cohort, especially in the far ends of the dissection membrane. This might be due to higher tube power in this CT generation. However, to generalise these findings larger trials are needed.