[Multi-slice CT angiography in the diagnosis and characterization of cerebral aneurysms].
ABSTRACT To assess the diagnostic accuracy of multislice computed tomography angiography in the detection and characterization of cerebral aneurysms.
Multislice CT angiography and DSA were performed in 41 patients suspected to have intracranial aneurysms. A volume rendering method was used to produce three-dimensional CT angiograms. The diameter, location, neck and branching pattern of aneurysms were evaluated with CT angiography and DSA and compared with each other.
Of 41 patients, DSA depicted 44 aneurysms in 33 patients. Multislice CT angiography depicted 44 aneurysms in 34 patients. One aneurysm demonstrated with DSA was not detected at multislice CT angiography. One aneurysm demonstrated with multislice CT angiography and confirmed at surgery was not demonstrated with DSA. There was no false positive aneurysm in multislice CT angiography. There were 4 aneurysms smaller than 3 mm and multislice CT angiography demonstrated all these aneurysms. In 9 aneurysms, the neck and branching pattern could only be shown with multislice CT angiography. Sensitivity and specificity of multislice CT angiography were 97.7% and 87.5%, respectively.
Multislice CT angiography has a high sensitivity and specificity in the diagnosis of intracranial aneurysms and is superior to DSA in the delineation of the aneurysm neck and branching pattern. Multislice technology with submillimeter collimation improves the detection of small aneurysms and the delineation of the neck of the aneurysms.
Article: Infrarenal aortic coarctation.[Show abstract] [Hide abstract]
ABSTRACT: Hypoplastic infrarenal aorta or infrarenal aortic coarctation is an uncommon vascular pathology characterized with diffuse stenosis in the infrarenal abdominal aorta. It is a variant of atherosclerotic occlusive diseases. The exact incidence and etiology are not known. Presenting symptoms are versatile and incidentally most of the patients have severe hypertension with an unidentified mechanism. Here, we report a 49-year-old male patient diagnosed with abdominal aortic coarctation together with the review of the literature. He underwent successful revasvcularization of the lower extremities.Wiener Medizinische Wochenschrift 07/2010; 160(13-14):372-5.
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ABSTRACT: To investigate the diagnostic accuracy of spiral CT angiography (CTA) in detection of cerebral aneurysms in cases with acute subarachnoid hemorrhage (SAH). Spiral CT angiography and DSA examinations were performed in 32 cases due to non-traumatic SAH. CTA data were obtained by maximum intensity projection (MIP) method. CTA and DSA findings were evaluated and compared in terms of existence of aneurysm, size and location. In 32 patients, DSA detected 34 aneurysms with diameters ranging from 3 to 13 mm while four cases were free of aneurysms. With CTA, an aneurysm at anterior communicating artery location could not be demonstrated. In all other cases CTA correlated well with DSA in detecting the site, size and orientation of the aneurysms. It was found that CTA sensitivity was 97% and specificity was 100% in diagnosis of intracranial aneurysms. Spiral CTA is a highly accurate, cheap and non-invasive imaging method in diagnosis of intracranial aneurysms in cases with SAH and can be used as a safe alternative method to DSA when emergency surgery is needed.Diagnostic and interventional radiology (Ankara, Turkey) 07/2005; 11(2):77-82. · 1.03 Impact Factor
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ABSTRACT: AMAÇ Akut subaraknoid kanamal› (SAK) olgularda sereb- ral anevrizmalar›n saptanmas›nda spiral BT anji- yografinin (BTA) tan›sal doruluunun araflt›r›lma- s› GEREÇ VE YÖNTEM Non-travmatik SAK nedeniyle 32 olguya spiral BT anjiyografi ve DSA tetkikleri yap›ld›. BTA verileri maksimum intensite projeksiyon (MIP) yöntemi kullan›larak elde edildi. BTA ve DSA bulgular› anev- rizma varl›¤›, boyutu ve lokalizasyonu yönünden deerlendirilerek birbiriyle karfl›laflt›r›ld› BULGULAR DSA'da 32 olguda, boyutlar› 3 ile 13 mm aras›nda deiflen toplam 34 anevrizma gösterilirken 4 olgu- da anevrizma saptanmad›. BTA'da anterior komini- kan arter lokalizasyonundaki bir anevrizma göste- rilemedi. BTA dier tüm olgularda anevrizma yeri- ni, boyutunu ve oryantasyonu göstermede DSA ile korelasyon gösterdi. BTA'n›n intrakranyal anevriz- malar›n tan›s›ndaki sensitivitesi %97, spesifitesi %100 olarak bulundu. SONUÇ Spiral BTA, SAK'l› olgularda intrakranyal anevriz- malar›n tan›s›nda doruluu yüksek, ucuz ve no- ninvaziv bir görüntüleme yöntemi olup acil cerrahi gerektiren durumlarda DSA'ya alternatif güvenilir bir modalite olarak uygulanabilir . Anahtar sözcükler: ● intrakranyal anevrizma ● subaraknoid kanama ● tomografi, bilgisayarl› spiral