Avtor/Urednik		Miloševič, Zoran
Naslov		Vloga računalniškotomografske angiografije pri bolnikih s subarahnoidno krvavitvijo
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Medicinska fakulteta
Leto izdaje		2003
Obseg		str. 58
Jezik		slo
Abstrakt		Background: Subarachnoid haemorrhage (SAH) is mostly caused by a ruptured aneurysm in the circle of Willis. Digital subtraction angiography (DSA) is the "golden standard" in the detection of aneurysms in patients with SAH. Computed tomographic angiography (CTA) is less invasive method than DSA. Moreover, it takes little time and is easily performed immediately after conventional computed tomography (CT). However, it has lower resolution than DSA, which makes it less sensitive and specific. The aim of our study was to evaluate the usefulness of CTA at three levels of the diagnostic work up in patients with SAH: 1. Primary identification of aneurysms. 2. Assessment of patients with negative DSA on initial evaluation. 3. Evaluation of patients following neurosurgical operation of aneurysms. Patients and methods: 1. Identification of aneurysms in patients with SAH. Seventy-nine patients were studied prospectively. CTA was performed directly after confirmation of the haemorrhage by conventional CT. The diagnostic sensitivity and specificity of CTA were evaluated by comparing its results with those of DSA. False-positive and false-negative results of CTA were analysed. 2. Assessment of patients with negative DSA on initial evaluation. The study group consisted of 15 patients. On initial evaluation, CTA was performed 24 hours after a negative DSA. If CTA was also negative, both examinations were repeated after two weeks. The diagnostic accuracy of CTA was determined. 3. Evaluation of patients following neurosurgical operation of aneurysms. The study group included 11 patients with 13 aneurysms excluded from the circulation with a titanium clip. CTA was performed as the first angiographic examination 30 days after the operation; DSA was carried out 24 hours after CTA. In both studies, we looked for evidence of residual aneurysm and evaluated the patency of nearby arteries. The results of CTA and DSA were compared. (Abstract truncated at 2000 characters).
Deskriptorji		SUBARACHNOID HEMORRHAGE TOMOGRAPHY, X-RAY COMPUTED CEREBRAL ANEURYSM ANEURYSM, RUPTURED ANGIOGRAPHY, DIGITAL SUBTRACTION