摘要
目的探讨能谱CT单能量血管优化技术对腰动脉的显示能力及优化血管成像的价值。方法回顾性分析100例腹部CT血管成像(CTA)患者的影像数据及临床资料,重建60 keV、74 keV的单能量图像。比较两组图像的对比噪声比(CNR)及主观评分,结合容积再现(VR)、最大密度投影(MIP)及血管分析观察腰动脉的起源、内径、与腹主动脉的夹角、变异情况及第5腰动脉显示率和起源情况。结果腰动脉的60 keV单能量图像质量明显优于74 keV单能量图像,第1腰动脉左支CT值、同侧竖脊肌CT值、背景噪声、CNR及主观评分差异均有统计学意义(P<0.05)。100例患者中,第1腰动脉显示197支,右支缺失3例,左右共干2例;第2、3腰动脉各显示200支,左右共干分别为7例、5例;第4腰动脉显示180支,左支缺失9例,右支缺失11例,左右共干24例。第5腰动脉显示率为56.5%。第1~4腰动脉内径逐渐增粗、发出处与腹主动脉的夹角逐渐增大,但仅第2腰动脉内径和第3腰动脉发出处与腹主动脉的夹角在两侧间差异有统计学意义(P<0.05),其余各参数在两侧间的差异均无统计学意义(P>0.05)。结论腰动脉解剖变异较大,能谱CT单能量血管优化技术能清晰显示腰动脉的解剖学特点及优化腰动脉成像质量,60 keV单能量图像质量优于74 keV单能量图像质量。
Objective To investigate the display ability of single energy vascular optimization technique of energy spectrum CT on lumbar arteries and the value of optimized angiography.Methods The imaging data and clinical data of 100 patients with abdominal computer tomography angiography(CTA)were analyzed retrospectively.The single-energy CT images of 60 keV and 74 keV were reconstructed.The contrast to noise ratio(CNR)and subjective scores were compared between the two groups.By combining with the volume rendering(VR),maximum intensity projection(MIP)and vessel analysis,the origin,diameter,intersection angle with abdominal aorta,variation of the lumbar arteries and the visualization rate and origin of the fifth lumbar artery were observed.Results The quality of 60 keV single energy images was significantly better than that of 74 keV single energy images.There were statistically significant differences in the CT value of the left branch of the first lumbar artery,CT value of the ipsilateral erector spinalis muscle,background noise,CNR and subjective score(P<0.05).In 100 cases,197 branches of the first lumbar artery were demonstrated,3 cases had absence of the right branch,and 2 cases had a common stem originating from the right and left branches.The second and third lumbar arteries showed 200 branches respectively,the left and right common trunks had 7 cases and 5 cases respectively.A total of 180 branches of the fourth lumbar artery were shown,of which the left branch was absent in 9 cases and the right branch in 11 cases,both left and right branches were absent in 24 cases.The fifth lumbar artery was visualized in 56.5%of the patients.The inner diameter of the lumbar artery from the top down and the intersection angle between the source and the abdominal aorta was gradually increased,but only the inner diameter of the second lumbar artery and the intersection angle between the origin of the third lumbar artery and the abdominal aorta had statistically significant difference(P<0.05).There was no statistically significant
作者
钟丽娟
熊图
周代全
周新杰
傅浪舟
余娜
ZHONG Lijuan;XIONG Tu;ZHOU Daiquan;ZHOU Xinjie;FU Langzhou;YU Na(Department of Radiology,the People’s Hospital of Leshan,Leshan,Sichuan 614000,China;Department of Radiology,the Third Affiliated Hospital of Chongqing Medical University(Gener Hospital),Chongqing 401120,China)
出处
《重庆医学》
CAS
2023年第1期108-112,117,共6页
Chongqing medicine
关键词
能谱CT
腰动脉
单能量成像
CT血管成像
影像解剖学
energy spectrum CT
lumbar arteries
single energy imaging
computer tomography angiography
imaging anatomy
