Naslov
CT angiography of the circle of Willis in diagnostic evaluation of SAH

Autori
Pavčec, Zlatko ; Ozretić, David ; Pal, Andrej ; Saghir, Hussein ; Latin, Branko ; Perhoć, Željka ; Žokalj, Ivan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
16th European Congress of Radiology (ECR 2004) : abstracts ; u: European Radiology / Baert, A.L. - Beč : Springer, 2004, 487-487

Skup
European Congress of Radiology (16 ; 2004)

Mjesto i datum
Beč, Austrija, 05.03.2004. - 09.03.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
computed ; tomography ; angiography ; subarachnoid ; haemorrhage

Sažetak
Learning objectives were to define advantages and limits of computed tomographic angiography (CTA) as a imaging method of choice in evaluation of acute subarachnoid haemorrhage. To describe the CTA is a most appreciated offspring of spiral CT technology. Volumetric acquisition and scanning during peak contrast enhancement allows very accurate computer generated 3D-reconstructions of vasculature. Intracrnial aneurysms are responsible for 75% of all nontraumatic subarachnoid haemorrhages (SAH). The majority of aneurysms are located on the Circle of willis. in this exhibit we will describe the use of CTA in diagnostic evaluation of SAH and the advantages and the limits of the method compared to the others available. Between April 2001 and August 2003, CTA was performed in 41 patients with SAH. The technique and findings are described and illustrated. CTA was performed on a single-slice spiral CT scanner (Hi Speed LXi, GE) with slice thickness 1mm, reconstruction interval 0.5mm and pitch 1. an area from base of the skull to above the clinoid processess was covered. A non-ionic contrast medium was injected in cubital vein (370mgI/ml, 4mL/s, 100mL) and scanning started after delay of 15-20s. Corresponding 3D image reconstructions (maximum intensity projections (MIP) and volume rendering (VR)) were produced at accompanying workstation (AW 4.0, GE). Intracranial aneurysms were visualised in 35 of 41 patients, but only 23 were further evaluated. Although intra-arterial DSA is still regarded as "gold standard" in diagnostic evaluation of the SAH, CTA can serve as guidance for intervention.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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