The value of improved CT perfusion in delineation of brain AVM target for stereotactic radiosurgery
10.3969/j.issn.1002-1671.2017.11.032
- VernacularTitle:CT改良灌注技术在脑AVM立体定向放射外科靶区勾画中的价值
- Author:
Hua JIANG
1
;
Ying LIU
;
Jiazhong DAI
;
Wenjing CAO
;
Huidong SHI
;
Jian DING
;
Xuqun TANG
;
Liqiong WU
;
Tonggang YU
Author Information
1. 上海理工大学医疗器械与食品学院
- Keywords:
computed tomography;
arteriovenous malformation;
stereotactic radiosurgery
- From:
Journal of Practical Radiology
2017;33(11):1769-1772
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of improved CT perfusion in delineation of brain arteriovenous malformation(AVM) target for stereotactic radiosurgery.Methods 22 patients diagnosed with AVM by DSA were included in this study.14 cases of AVM were detected from initial symptoms of intracereb.ral hemorrhage,of which 4 cases were given immediate intracranial hematoma evacuation,then in 3 cases postoperative embolization was performed,and other 10 cases received conservative treatment including 3 cases treated by embolization.8 cases of AVM were detected from initial symptoms of epilepsy or headache,without surgery or embolization treatment.In all patients,the improved CT perfusion and MRA examinations were performed before treatment to evaluate the diagnostic efficacy of different methods in AVM.Results The interference rates of hemorrhage and granulation tissue on MRA images were 27.3 ％ and 54.5 ％,respectively,while those on enhanced CT and improved CT perfusion images were 0 ％.The interference rate of embolization material on enhanced CT and improved CT perfusion images was 27.3％,while that on MRA images were 0％.The contrast-enhancement rates of MRA,CT and improved CT perfusion images were 4 5.5 ％,5 4.5 ％ and 7 2.7 ％,respectively.Conclusion Improved CT perfusion technique is helpful in delineation of brain AVM target for stereotactic radiosurgery in patients with AVM combined with intracerebral hemorrhage or postoperative patients.
