Study of CT dual-low technology angiography in patients with stroke
10.3969/j.issn.1673-9701.2023.35.008
- VernacularTitle:脑卒中患者CT双低技术血管成像研究
- Author:
Weidong WU
1
;
Xingsheng LYU
;
Yanli ZHU
Author Information
1. 义乌市中心医院放射科,浙江义乌 322000
- Keywords:
Dual-low technology;
Iterative reconstruction;
Stroke;
Head and neck;
Computed tomography angiography
- From:
China Modern Doctor
2023;61(35):32-36
- CountryChina
- Language:Chinese
-
Abstract:
Objective This study focused on the low voltage and low concentration contrast agent technology in vascular imaging of stroke patients.Methods Totally144 patients of ischemic stroke confirmed from January 2022 to January 2023 were enrolled.They were divided into four groups according to different imaging methods:conventional group(tube voltage 120kV,iodine concentration 370mgI/ml),low voltage group(tube voltage 80kV,iodine concentration 370mgI/ml),low concentration group(tube voltage 120kV,iodine concentration 320mgI/ml)and dual-low group(tube voltage 80kV,iodine concentration 320mgI/ml),the post-processing technology adopted ASiR algorithm for 3D reconstruction.Then to compare contrast signal-to-noise ratio(CNR)and signal-to-noise ratio(SNR)of the reconstructed image,image quality score,CT values of internal carotid artery(ICA),anterior cerebral artery(AA)A1,middle cerebral artery(MA)M1,posterior cerebral artery(PA)P1,vertebral artery(VA)and basilar artery(BA),mean iodine intake and radiation dose parameters including volume CT dose index(CTDIvol)and dose length product(DLP).Results The CNR and SNR values in dual-low group were significantly less than the other three groups(P<0.05),while image quality score and CT value of each artery were no differences among the four groups(P>0.05).What's more,CTDIvol,DLP and iodine intake volume in dual-low group were significantly less than the others(P<0.05).Conclusion The dual-low technology scanning could obtain satisfactory head and neck CT angiography for stroke patients.
