Three-Dimensional Computed Tomographic Angiography with Volume Rendering Technique in the Evaluation of Intracranial Aneurysms: Comparison with Three-Dimensional Digital Subtraction Angiography.
10.3348/jkrs.2004.50.6.407
- Author:
Yu Lan SHEN
1
;
Jeong Jin SEO
;
Eun Ju LEE
;
Woong YOON
;
Yong Yeon JEONG
;
Tae Woong CHUNG
;
Jea Kyu KIM
;
Jin Gyoon PARK
;
Heoung Keun KANG
Author Information
1. Department of Diagnostic Radiology, Chonnam National University Medical School, Korea.
- Publication Type:Original Article
- Keywords:
Aneurysm, CT;
Computed tomography(CT), angiography;
Angiography, preoperative;
Digital subtraction angiography
- MeSH:
Aneurysm;
Angiography*;
Angiography, Digital Subtraction*;
Humans;
Intracranial Aneurysm*;
Neck;
Retrospective Studies
- From:Journal of the Korean Radiological Society
2004;50(6):407-414
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The author compared three-dimensional computed tomographic angiography with combined volume rendering technique (3D-CTA VR) with three-dimensional digital subtraction angiography (3D-DSA) in the detection and characterization of intracranial aneurysms, in order to assess the diagnostic capability of 3D-CTA VR. MATERIALS AND METHODS: This study included 50 patients with suspected intracranial aneurysm who underwent both 3D-CTA VR and 3D-DSA, and who were subsequently confirmed as having aneurysms by intracranial operation or other neurointerventional procedures. The detectability and the characteristics of the aneurysms, such as their aneurysmal neck, direction, and vasospasm of the adjacent vessels, were evaluated retrospectively. RESULTS: Sixty-five intracranial aneurysms were detected through surgery or other interventional procedures. 3D-DSA was more sensitive (96.92%) than 3D-CTA VR in the detection of the aneurysms. All of the aneurysms that were more than 3mm in size were detected with both techniques. 3D-DSA failed to reveal one posterior communicating artery aneurysm, while 3D-CTA VR missed three aneurysms. The aneurysmal necks were clearly visualized in 58 of 61 aneurysms (95.1%) on 3D-CTA VR, but all of the aneurysmal necks(100%) were clearly identified on 3D-DSA. CONCLUSION: 3D-CTA combined with VR technique showed good sensitivity for the depiction of intracranial aneurysms greater than 3 mm in size, and its usefulness in characterizing the aneurysms for surgical or endovascular treatment planning was equal to or less than that of 3D-DSA.
