中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (52): 9792-9796.doi: 10.3969/j.issn.1673-8225.2011.52.024

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

低剂量双源CT冠状动脉成像在支架置入后复查中的应用

鲍  健，陈宏伟，方向明   

  1. 南京医科大学附属无锡市人民医院医学影像科，江苏省无锡市214023
  • 收稿日期:2011-06-10 修回日期:2011-07-26 出版日期:2011-12-24 发布日期:2011-12-24
  • 作者简介:鲍健★，男，1962年生，江苏省无锡市人，汉族，1999年南京医科大学毕业，硕士，主任医师，主要从事医学影像诊断研究。 qbqb5188@163.com

Application of low-dose dual-source CT angiography imaging in the evaluation of postoperative coronary stenting

Bao Jian, Chen Hong-wei, Fang Xiang-ming   

  1. Department of Radiology, Affiliated Wuxi People’s Hospital of Nanjing Medical School, Wuxi  214023, Jiangsu Province, China
  • Received:2011-06-10 Revised:2011-07-26 Online:2011-12-24 Published:2011-12-24
  • About author:Bao Jian★, Master, Chief physician, Department of Radiology, Affiliated Wuxi People’s Hospital of Nanjing Medical School, Wuxi 214023, Jiangsu Province, China qbqb5188@163.com

PDF

401

被引次数

3

摘要：

背景：多排螺旋CT冠状动脉造影目前已成为评价冠脉支架置入后的检查重要手段，但患者需要接受较大的X射线剂量。
目的：评价低剂量双源CT冠状动脉造影成像技术在冠状动脉支架置入后复查中的应用价值。
方法：采用双源CT冠状动脉造影成像技术对45例冠状动脉支架置入后的患者进行前门控CT冠状动脉扫描，共置入支架63枚，观察支架及非支架血管的通畅性，与数字减影血管造影金标准进行对比；并随机抽取应用后门控法行双源CT冠状动脉造影成像的50例患者，以作辐射剂量对比。
结果与结论：与数字减影血管造影对比，前门控组双源CT冠状动脉造影成像诊断支架内通畅性正确率为96.8%，非支架血管通畅性正确率为96.5%。前门控组所接受的辐射剂量显著低于后门控组(P < 0.01)。提示低剂量双源CT冠状动脉造影成像技术在心率(律)允许的条件下，可以在保证检查质量的同时大幅降低患者的辐射剂量，可作为冠状动脉支架置入后效果评价和随访的重要手段。

关键词: 体层摄影, 双源CT, 冠状血管造影, 支架, 前门控技术

Abstract:

BACKGROUND: Multi-slice spiral CT coronary angiography is an impartment screening techniques in the evaluation of coronary stent implantation, but patients need receive larger radiation doses of X-ray.
OBJECTIVE: To evaluate the clinical value of low-dose dual-source CT angiography (DSCTA) imaging in the evaluation of postoperative stenting of coronary arteries.
METHODS: Totally 45 patients with 63 previously implanted coronary stents underwent prospective Electro-Chemical Grindion (ECG) gating (prospective) using DSCTA. Patency of stented and non-stented coronary arteries was observed and compared with digital subtraction angiography (DSA) gold standard. Fifty patients who underwent retrospective ECG gating (retrospective) using CT angiography were randomly selected for the analysis of irradiation dose comparison.
RESULTS AND CONCLUSION: Compared with the DSA, DSCTA showed correct rate of the stent patency was 96.8% and of the non-stent patency was 96.5% in the prospective group. The radiation dose in the prospective group was significantly lower than that of the retrospective group (P < 0.01). It is indicated that DSCTA yields not only high quality images but lower radiation dose under the permission of heart rate or rhythm, which suggests that DSCTA could be clinically useful for assessing postoperative coronary stenting.

中图分类号: