Comparative research between the dual energy of somatom definition flash CT and routine-substration in the examination of cerebral and carotid arteries
- VernacularTitle:双源CT与传统CTA-DSA技术在头颈部血管成像的对比应用
- Author:
Xingzhen HU
1
;
Ye WU
;
Yuqi ZHOU
;
Yuzhu JIA
Author Information
1. 宁波市鄞州区第二医院放射科
- Keywords:
Computerized tomography;
X-ray computer;
Angiography
- From:
China Modern Doctor
2015;(21):79-83
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of dazzle speed dual-source dual-energy CT imaging in head and neck arteries. Methods Total 96 patients were enrolled into two groups randomly in this study. Fourty-eight pa tients were scanned the dual-energy scanning mode (140 kV/Sn80 kV,210/105 mAs) in group A. The other 48 patients were scanned in a tranditional Neuro-DSA mode (120 kV/245 mAs) in group B. The CT volume dose index (CTDI vol) and the subjective image quality score were compared between two groups. Results The difference of the subjective im age quality score was significant between the two groups(P<0.05), the effective dose of group A was decreased by 25%compared with the dose of group B [(7.54±0.05) mGy vs (10.67±0.08) mGy). Conclusion Radiation dose is lower, image quality is better in the dazzle speed dual-source double energy imaging of the head and neck vascular when compared to the conventional Neuro-DSA imaging. But excessive?subtraction angiography exists in the bone of the skull base, the technology needs to be improved.
