Time-Resolved 3D Contrast-Enhanced MRA on 3.0T: a Non-Invasive Follow-Up Technique after Stent-Assisted Coil Embolization of the Intracranial Aneurysm.
10.3348/kjr.2011.12.6.662
- Author:
Jin Woo CHOI
1
;
Hong Gee ROH
;
Won Jin MOON
;
Na Ra KIM
;
Sung Gyu MOON
;
Chung Hwan KANG
;
Young Il CHUN
;
Hyun Seung KANG
Author Information
1. Department of Radiology, Konkuk University School of Medicine, Seoul 143-729, Korea. hgroh@kuh.ac.kr
- Publication Type:Original Article ; Comparative Study ; Research Support, Non-U.S. Gov't
- Keywords:
Aneurysm;
Coil embolization;
Stent;
Time of flight MRA;
Time-resolved MRA
- MeSH:
Adult;
Aged;
Cerebral Arteries/pathology;
*Contrast Media;
*Embolization, Therapeutic;
Female;
Humans;
*Imaging, Three-Dimensional;
Intracranial Aneurysm/*diagnosis/therapy;
*Magnetic Resonance Angiography/methods;
Male;
Middle Aged;
Sensitivity and Specificity;
*Stents;
Young Adult
- From:Korean Journal of Radiology
2011;12(6):662-670
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To evaluate the usefulness of time-resolved contrast enhanced magnetic resonance angiography (4D MRA) after stent-assisted coil embolization by comparing it with time of flight (TOF)-MRA. MATERIALS AND METHODS: TOF-MRA and 4D MRA were obtained by 3T MRI in 26 patients treated with stent-assisted coil embolization (Enterprise:Neuroform = 7:19). The qualities of the MRA were rated on a graded scale of 0 to 4. We classified completeness of endovascular treatment into three categories. The degree of quality of visualization of the stented artery was compared between TOF and 4D MRA by the Wilcoxon signed rank test. We used the Mann-Whitney U test for comparing the quality of the visualization of the stented artery according to the stent type in each MRA method. RESULTS: The quality in terms of the visualization of the stented arteries in 4D MRA was significantly superior to that in 3D TOF-MRA, regardless of type of the stent (p < 0.001). The quality of the arteries which were stented with Neuroform was superior to that of the arteries stented with Enterprise in 3D TOF (p < 0.001) and 4D MRA (p = 0.008), respectively. CONCLUSION: 4D MRA provides a higher quality view of the stented parent arteries when compared with TOF.
