Diagnostic and Interventional Radiology
Neuroradiology - Original Article

Performance analysis of 8-channel MDCT angiography in detection, localization, and sizing of intracranial aneurysms identified on DSA


Department of Radiology Ankara University Medical School, Ankara, Turkey


Departments of Radiology Ankara University School of Medicine, Ankara, Turkey.


Department of Radiology, Ankara University School of Medicine, Ankara, Turkey


Department of Radiology , Ankara University School of Medicine, Ankara, Turkey.

Diagn Interv Radiol 2009; 15: 81-85
Read: 872 Downloads: 734 Published: 03 September 2019


To retrospectively analyze the performance of 8-channel multi-detector computed tomographic angiography (MDCTA) in detecting, localizing, and sizing intracranial aneurysms using conventional intraarterial digital subtraction angiography (DSA) as the gold standard.


A retrospective search from November 2004 to August 2006 revealed subarachnoid hemorrhage (SAH) in 25 patients (13 females and 12 males, age range 21–73 years) who underwent both DSA and 8-channel MDCTA exams. Two independent reviewers compared both studies for the presence, location, and size of the aneurysm.


A total of 35 aneurysms in 25 patients were identified on DSA, and 33 on MDCTA. MDCTA missed two 4-mm posterior communicating artery (PcoA) aneurysms. There was a mismatch in the location of two aneurysms. One aneurysm at PcoA on DSA was reported as a supraclinoid internal carotid artery (ICA) aneurysm on MDCTA. The other on M2 bifurcation was reported as on M1. No size mismatch was noted. MDCTA had a 94% (33/35) aneurysm detection rate, 88% (31/35) aneurysm localization rate and 100% (33/33) sizing rate.


MDCTA correlated perfectly with DSA in the detection of intracranial aneurysms of anterior communicating artery and middle cerebral artery; however, slightly lower performance was noted in the PcoA and ICA supraclinoid segment aneurysms.

EISSN 1305-3612