We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Elektronenstrahl-CT-Angiographie beim abdominellen Aortenaneurysma Erste Ergebnisse.
- Authors
Neff, K. W.; Lehmann, K.-J.; Weisser, G.; Denk, S.; Georgi, M.
- Abstract
Purpose: To evaluate the suitability of ultrafast electron-beam tomography (EBT) for the investigation of abdominal aortic aneurysms using CTA. Methods: Thirty-one patients with suspected abdominal aortic aneurysm were investigated with EBT using an Evolution XP scanner (Siemens, Erlangen) with the newest software version 12.34 with continuous volume scanning of 140 images in 17 s. Collimation was 3 mm, table increment 4 mm with overlapping image reconstruction every 2 mm, exposure time 200 ms (124 mAs), resulting in a scan-range of 28 cm. A quantity of 80 ml contrast material was administered (flow 4 ml/s). Visualization of the abdominal aorta and its branches was performed with MIPs and shaded surface display. Evaluation of image quality was based on a four-step classification scale (1 = good, 4 = insufficient) for the demonstration of the abdominal aorta and the visceral, renal and iliac arteries. Results: All EBT examinations demonstrated high and homogeneous density values along the whole vessel course with a mean density value of 258.7 ± 47.3 HU for the abdominal aorta and the iliac arteries. Quality evaluation for the vessel demonstration showed mean values between 1.22 and 1.57 for the abdominal aorta and the visceral, renal and iliac arteries. Conclusions: EBT with 140 slices and slice reconstruction every 2 mm offers a high z-axis resolution resulting in high-quality CT angiographies of the whole abdominal aorta and its branches.
- Publication
Der Radiologe, 1998, Vol 38, Issue 12, p1060
- ISSN
0033-832X
- Publication type
Article
- DOI
10.1007/s001170050463