[Double spiral CT angiography].
OBJECTIVE
To evaluate the clinical value of CT angiography using double-spiral CT technique.


METHODS
7 patients with peripheral occlusive disease were examined after stent placement into iliac arteries (5/7) or prior surgery under the clinical suspicion of an occluded vascular graft (2/2). After a delay of 25 sec two spiral CT-scans, each of 32 sec duration, were started. The average interscan delay was between 12-15 sec. The total examination time was about 100 sec and the total range 36 cm using a slice thickness of 3 mm and a table feed of 6 mm/sec. 150 ml of contrast material were injected continuously with 3 ml/sec.


RESULTS
All stents were exactly located and diagnosed as patent (6/6) in comparison to intraarterial angiography. Two occluded vascular grafts were diagnosed, confirmed by surgical findings (2/2). Density measurements showed enough of contrast material in the vessels to perform CT-angiography even in the second part of the examination.


CONCLUSIONS
Double-spiral CT angiography is a clinical applicable and helpful method to examine patients with peripheral occlusive disease. It allows to double the examination range without losing the advantages of small slice thickness.
Freund
M
M
Klinik für Radiologische Diagnostik, Klinikum der Christian-Albrechts-Universität zu Kiel.
Palmié
S
S
Hutzelmann
A
A
Heller
M
M
D000368:Aged; D000792:Angiography / Q000379:methods*; D000800:Angioplasty, Balloon; D001012:Aorta, Abdominal / Q000601:surgery; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000601:surgery / Q000628:therapy; D001807:Blood Vessel Prosthesis; D005069:Evaluation Studies as Topic; D005260:Female; D005263:Femoral Artery / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents; D014057:Tomography, X-Ray Computed / Q000379:methods*
Doppel-Spiral-CT-Angiographie.