Double low-dose computed tomography (CT) angiography of craniocervical arteries using a test bolus of diluted contrast medium and a personalized contrast protocol.

Autor: Li J; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Wei WF; Department of Neurosurgery, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Song LN; Medical Record Department, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Mei XY; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Yuan XS; Department of Neurosurgery, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., He JB; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Jiang LZ; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China., Li HY; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China. Electronic address: 2541787737@qq.com., Wu HL; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China. Electronic address: wuhljs@163.com., Chen JP; Department of Radiology, Wujin Hospital Affiliated to Jiangsu University, Wujin Clinical College of Xuzhou Medical University, Changzhou 213002, Jiangsu, China. Electronic address: 690144956@qq.com.
Jazyk: angličtina
Zdroj: Clinical radiology [Clin Radiol] 2024 Nov; Vol. 79 (11), pp. e1330-e1338. Date of Electronic Publication: 2024 Jul 31.
DOI: 10.1016/j.crad.2024.07.021
Abstrakt: Aim: To prospectively assess the value of a test bolus of diluted contrast medium (CM) combined with a personalized contrast protocol in craniocervical computed tomography angiography (cc-CTA) with low radiation and CM doses.
Materials and Methods: Eighty-six consecutive subjects were divided into two groups at random (43 in each one): group A: 100/Sn140 kVp, filtered back-projection reconstruction, iopromide (370 mgI/ml) 50 ml; group B: 80/Sn140 kVp, iterative reconstruction, iodixanol (270 mgI/ml). In group B, the test bolus contained 27 ml of diluted CM, a personalized protocol with low-concentration CM was used for angiography, and the test bolus injection duration in angiography remained the same. Artery values over 200 Hounsfield units were considered significant.
Results: Image quality for all cases was found to be diagnostic. No significant differences were found in the arterial densities of the ascending aorta or basilar artery between the groups. The values of the common carotid artery, internal carotid artery, and middle cerebral artery in group B were significantly lower. The effective dose and average iodine uptake were significantly lower in group B.
Conclusion: With double-low-dose cc-CTA, test bolus scanning based on diluted CM combined with a personalized contrast protocol can yield diagnostic-quality images and significantly reduce the radiation and CM doses.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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