Control Study of Image Qualities in Cerebral CT Angiography by Two Subtraction CAT Techniques
- VernacularTitle:两种减影CTA技术在脑血管成像中图像质量的对照研究
- Author:
Chuan LI
;
Jian WANG
;
Daiquan ZHOU
- Publication Type:Journal Article
- Keywords:
digital subtraction;
energy subtraction;
CT angiography
- From:
Chinese Medical Equipment Journal
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To contrast the image qualities and the display percentage of vessel branches in cerebral angiography by two techniques, namely, Digital Subtraction CT Angiography (DSCTA) and Dual Energy Subtraction CT Angiography (DECTA). Methods 40 patients were divided averagely into Group A and Group B. All of them underwent head CTA exam, employing Somaton Definition Dual-Source CT of Siemens. The patients in Group A were under the mode of single tube and single energy by DSCTA, meanwhile the patients in Group B were under the mode of dual tube and dual energy by DECTA. Then the image quality of two groups and the display percentage of main vessels and branch were contrasted. Results 18 patients out of 20 in Group A succeeded in subtraction while 2 cases failed because of patients′ motion. The rate of success was 90%; 20 patients in Group B did subtraction successfully and the achievement ratio was 100%; there was no great difference on cerebral main vessels and branches which displayed in image between two groups. But the image quality of group A was superior to that of Group B. Conclusion As the development of dual-source CT′s hardware and software, DECTA Cerebral Angiography will be applied widely in clinic.
