Clinical significance of one-stop cardio-cerebrovascular CTA scanning mode of low-tube voltage combined with ASiR-V algorithm(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2023年第2期
- Page:
- 176-181
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Clinical significance of one-stop cardio-cerebrovascular CTA scanning mode of low-tube voltage combined with ASiR-V algorithm
- Author(s):
- LIU Heng1; WANG Yannan2; 3; NA Feiyang4; LIU Xianwang2; 3; LIU Jianli2; 3; ZHANG Xiaowei1; 5
- 1. The Second Clinical Medical College of Lanzhou University, Lanzhou 730000, China 2. Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730000, China 3. Key Laboratory of Medical Imaging in Gansu Province, Lanzhou 730000, China 4. Allergy Department, Gansu Provincial Maternity and Child-care Hospital, Lanzhou 730000, China 5. Department of Cardiology, Lanzhou University Second Hospital, Lanzhou 730000, China
- Keywords:
- Keywords: atherosclerosis low dose one-stop scanning coronary artery head and neck CT angiography
- PACS:
- R318；R816.2
- DOI:
- DOI:10.3969/j.issn.1005-202X.2023.02.008
- Abstract:
- Abstract: Objective To investigate the value of one-stop cardio-cerebrovascular CT angiography (CTA) scanning mode of low-tube voltage combined with ASiR-V algorithm in the evaluation of cardiovascular and cerebrovascular diseases caused by atherosclerosis. Methods A retrospective analysis was conducted on 120 patients who needed screening for cardiovascular and cerebrovascular diseases. According to different scanning methods, the patients were divided into 3 groups, with 40 patients in each group. Low-dose one-stop cardio-cerebrovascular CTA scanning mode (80 kV, automatic milliamperage, 40%ASIR-V preposition, 50%ASIR-V postposition) was adopted in group A, conventional-dose coronary CTA scanning mode (100 kV, 550 mA) in group B, and conventional-dose head and neck CTA scanning mode (100 kV, 500 mA) in group C. The radiation dose and contrast agent dosage were compared among 3 groups of scanning modes, and the obtained images were evaluated subjectively and objectively. Results The effective radiation dose of one-stop cardio-cerebrovascular CTA scanning mode of low tube voltage combined with ASiR-V algorithm was (1.36±0.66) mSv, and the radiation dose was (2.31±0.75) mSv in group B and (1.12±0.04) mSv in group C. The effective radiation dose in group A was significantly lower than the sum of group B and group C (P<0.05). There was no statistical significance between group A and group B in the CT number of LAD proximal end, LCX proximal end and RCA proximal end, SD, CNR, and the subjective score of CTA image quality (P>0.05). The CT number and subjective score of image quality in group A were close to those in group C (P>0.05), but there were significant differences in SD and CNR between group A and group C (P<0.05). Conclusion The low-dose one-stop head and neck coronary angiography scanning mode ensures that the image quality meets the requirements, and it can be used to comprehensively evaluate the cardiovascular and cerebro vascular diseases caused by atherosclerosis.
Last Update: 2023-03-03