The clinical application of low-dose dual-source whole-body angiography CT in Takayasu’s arteritis
10.3969/j.issn.1002-1671.2016.03.021
- VernacularTitle:全身动脉双源CT低剂量成像在大动脉炎的临床应用
- Author:
Yanmeng DENG
;
Jian LI
;
Hongliang ZHAO
;
Minwen ZHENG
- Publication Type:Journal Article
- Keywords:
Takayasu’s arteritis;
computed tomography;
angiography;
low dose
- From:
Journal of Practical Radiology
2016;32(3):406-410
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the low-dose dual-source whole-body CT angiography in assessing the arteries of Takayasu’s arteritis (TA).Methods Low-dose whole-body CT angiography(CTA)was performed in 57 consecutive patients with suspected TA. The scanning parameters were performed with tube voltage 80 kV and attenuation-based tube current modulation with a referenced tube current at 300 mAs.The volume CT dose index (CTDIvol)and dose-length product (DLP)were obtained for all scans.Subjec-tive and objective image quality of different arteries were assessed in seven anatomic territories,including intracranial,cervical,tho-racic,abdominal,upper extremity,thigh and shank.In addition,CT findings of whole-body arteries were recorded.Results Forty out of fifty-seven patients with definite diagnosis of TA enrolled in this study.Mean CTDIvol and DLP for all patients were (2.5± 0.9)mGy and (403.7±91.4)mGy·cm,respectively.The scoring order of subjective and objective iamge quality was neck,chest, abdomen,thigh,upper extremity,head and shank.5.9% of intracranial arteries,3.3% of lower extremity arteries and 0.5% of upper extremity arteries were extra detected.Conclusion The extra CT findings of intracranial,lower extremity and upper extremity arter-ies provides a more comprehensive evaluation of whole-body arteries involvement.
