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- Title
80 kVp 联合 ASiR-V 对肾移植术前评估 髂动脉图像质量的影响.
- Authors
贾晓茜; 徐文婷; 同维; 陈姣; 朱书萌; 田倩; 牛心怡; 张向利; 郭建新
- Abstract
Objective To investigate the effects of 80 kVp combined with multi-model adaptive statistical iterative reconstruction algorithm (ASiR-V) on the image quality of CT angiography (CTA) of iliac artery in kidney transplantation candidates before operation. Methods Totally 50 kidney transplantation candidates underwent “one-stop” scanning combined CTA for coronary and iliac arteries were recruited consecutively. After the scanning,images were reconstructed with different ASiR-V levels on the iliac artery from 50% to 100% at a 10% interval, and 6 groups of images were obtained. We evaluated and compared all image qualities, DLP and CTDI in the patients’ examination were recorded,and the effective dose (ED) was calculated. Results All of the image quality objective scores of different ASiR-V levels on the iliac artery were above 3 points (3. 32±0.24), and the average CT value was (344. 30±74. 53) HU. The ED received by the patient throughout the examination was (2. 71±0.42) mSv. The image noise decreased while SNR and CNR increased monotonically as the ASiR-V levels increased, among which 80% ASiR-V image quality score was the highest with 3. 41±0. 26. Conclusion For patients who need to have both coronary and iliac arteries evaluated before kidney transplantation operation, low tube voltage (80 kVp) combined with 80% ASiR-V can obtain high-quality iliac artery images under the premise of reducing the ED dose, which can provide practical basis for further reducing the dose in personalized scanning scheme for such patients. It has good feasibility and clinical application value.
- Publication
Journal of Xi'an Jiaotong University (Medical Sciences), 2021, Vol 42, Issue 5, p763
- ISSN
1671-8259
- Publication type
Article
- DOI
10.7652/jdyxb202105020