The effects of 80 kVp combined with ASiR-V on image quality of iliac artery in preoperative evaluation of kidney transplantation

Xiaoqian JIA; Wenting XU; Wei TONG; Jiao CHEN; Shumeng ZHU; Qian TIAN; Xinyi NIU; Xiangli ZHANG; Jianxin GUO

Return

The effects of 80 kVp combined with ASiR-V on image quality of iliac artery in preoperative evaluation of kidney transplantation

VernacularTitle:80 kVp联合ASiR-V对肾移植术前评估髂动脉图像质量的影响
Author: Xiaoqian JIA ¹ ; Wenting XU ¹ ; Wei TONG ¹ ; Jiao CHEN ¹ ; Shumeng ZHU ¹ ; Qian TIAN ¹ ; Xinyi NIU ¹ ; Xiangli ZHANG ¹ ; Jianxin GUO ¹
Author Information

1. Department of Radiology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
Publication Type:Journal Article
Keywords: renal transplant; X-ray computer; iliac artery; iterative reconstruction; image quality
From: Journal of Xi'an Jiaotong University(Medical Sciences) 2021;42(5):763-768
CountryChina
Language:Chinese
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.