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- Title
Digital subtraction CT angiography for the detection of posterior inferior cerebellar artery aneurysms: comparison with digital subtraction angiography.
- Authors
Chen, Guo; Luo, Song; Zhou, Chang; Zhang, Long; Lu, Guang; Chen, Guo Zhong; Zhou, Chang Sheng; Zhang, Long Jiang; Lu, Guang Ming
- Abstract
<bold>Objective: </bold>To evaluate the diagnostic accuracy of digital subtraction CT angiography (DS-CTA) in detecting posterior inferior cerebellar artery (PICA) aneurysms with digital subtraction angiography (DSA) as reference standard.<bold>Methods: </bold>A total of 115 patients, including 56 patients diagnosed with PICA aneurysms by CTA or DSA and 59 non-PICA-aneurysm patients were included in this retrospective study. All patients underwent DS-CTA and DSA. The site of PICA aneurysms and the pattern of haemorrhage were analysed. Sensitivity and specificity of DS-CTA without and with combining haemorrhage pattern in diagnosing PICA aneurysms were evaluated on a per patient and per aneurysm basis with DSA.<bold>Results: </bold>Of 115 patients, 56 patients (48.7%) had 61 PICA aneurysms (size range, 1.1-13.5 mm; mean size, 4.9 ± 2.8 mm) on DSA. The sensitivity and specificity in depicting PICA aneurysms were 89.3% and 96.6% on a per patient basis and 90.2% and 93.4% on a per aneurysm basis, while the corresponding values were 94.6% and 96.6% on a per patient basis and 95.1% and 93.4% on a per aneurysm basis when combining with haemorrhage site.<bold>Conclusion: </bold>DS-CTA has a high sensitivity and specificity in detecting PICA aneurysms compared with DSA. It may be helpful for clinical diagnosis of PICA aneurysms to combine with haemorrhage sites.<bold>Key Points: </bold>• CT angiography has a good diagnostic performance in detecting PICA aneurysms. • The haemorrhage location is helpful to detect PICA aneurysms. • Digital subtraction CTA is a preferable diagnostic means for PICA aneurysms.
- Subjects
COMPUTED tomography; ANEURYSM diagnosis; DIGITAL subtraction angiography; HEMORRHAGE; ARTERIES; CEREBRAL angiography; INTRACRANIAL aneurysms; WEIGHTS &; measures; RETROSPECTIVE studies; POSTERIOR cerebral artery
- Publication
European Radiology, 2017, Vol 27, Issue 9, p3744
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-017-4771-6