机构地区:[1]江苏省扬中市人民医院影像科,江苏扬中212200
出 处:《中国CT和MRI杂志》2012年第3期105-107,119,共4页Chinese Journal of CT and MRI
摘 要:目的评价64排螺旋CT个性化造影剂注射方案与传统的注射方案在显示冠状动脉远端及分支图像质量上的差异,进一步优化冠状动脉CT成像造影剂注射方案。方法收集2009年7月至2011年4月在我院影像科行64排螺旋CT冠状动脉成像影像学资料总计100例,随机分成传统注射组(n=50)和个性化注射组(n=50)。传统注射组采用传统双筒注射方案,以5.0ml/s流率注射造影剂80ml,注射完后再以相同的流率注射30ml生理盐水。个性化注射方案造影剂用量及速率根据体重,分为三组,体重≤60kg者,第一期以5.0ml/s注射生理盐水16ml,第二期以4.5ml/s流率注射造影剂70ml,第三期以相同的流率注射30%造影剂配以70%生理盐水混合物30ml;体重在61-74kg之间者,第一期以5.0ml/s注射生理盐水16ml,第二期以5.0ml/s流率注射造影剂75ml,第三期以相同的流率注射30%造影剂配以70%生理盐水混合物30ml;体重≥75kg者,第一期以5.5ml/s注射生理盐水16ml,第二期以5.5ml/s流率注射造影剂80ml,第三期以相同的流率注射30%造影剂配以70%生理盐水混合物40ml。由2名高年资的放射科医师双盲阅读评估各冠状动脉分支显示情况并进行质量评分,比较两组数据间的差异。结果 RCA远段、右后降支、LAD远段、D1、D2、LCX远段、左室后支、左后降支的图像质量个性化注射组优于传统注射组(p<0.05);RCA近段、RCA中段、LM、LAD近段、LAD中段、LCX近段、钝缘支两组间图像质量评分无明显差异(p>0.05)。结论个性化造影剂注射法明显提高了冠状动脉远端及分支的强化程度,并提供了更好的图像质量,能更好的满足临床诊断。Objective To evaluate the difference of quality of images which displayed coronary artery and the diatal segments between 64-MDCT individual optimized injection protocol and traditional injection protocol,and to optimize the injection protocols. Methods 100 Patients underwent coronary CT angiography(CTA) with 64 MDCT in our institute from July 2009 to April 2011.The Patients were divided randomly into two groups: group I was conventional injection group(n=50), and group 2 was individual optimized injection group(n=50).Group 1 received 80ml of contrast medium(CM) at 5.0ml/s, followed by 30 ml saline at the same flow rate.For group 2, patients were divided into 3 groups by their weight, and the injection parameters were adapted to patients' weight. The body weight of patients less than 60kg received 16ml CM at 5.0ml/s in the first phase, followed by 70ml contrast agent at 4.5ml/s in the second phase, and contrast-saline mixture 30 ml at 30:70 ration at the same flow rate in the third phase. The body weight of patients between 61 to 74kg received 16ml CM at 5,0mils in the first phase, followed by 75ml contrast agent at 5.0ml/s in the second phase, and contrast-saline mixture 30 ml at 30:70 ration aS the same flow rate in the third phase. The body weight of the patients over 75kg received 16ml CM at 5.5ml/s in the first phase, followed by 80ml contrast agent at 5.5ml/s in the second phase, and contrast-saline mixture 40 ml at 30:70 ration at the same flow rate in the third phase. Manifestations of coronary arteries and branches were evaluated by 2 senior doctors double blindly. The data were analyzed between groups. Results The image quality of the distal segment of RCA, the r ght posterior descending branch, she distal segment of LAD, D 1, D2, the distal segment of LCX, the posterior left ventricular branch, the left posterior descending branch between individual group optimized injection group and conventional injection group had statistical differences(P〈0.05). The image qual- ity o
关 键 词:64排螺旋CT 心脏冠状动脉成像 个性化注射 造影剂
分 类 号:R814.42[医药卫生—影像医学与核医学]
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