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
【期刊名称】《中国组织工程研究》 【年(卷),期】2011(015)052
【摘要】BACKGROUND: Multi -slice spiral CT coronary angiography is an impartment screening techniques in the evaluation of coronarystent 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 ofpostoperative 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 withdigital subtraction angiography (DSA) gold standard. Fifty patients who underwent retrospective ECG gating (retrospective) usingCT 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 thenon-stent patency was 96.5% in the pro spective group. The radiation dose in the pro spective group was significantly lower thanthat of the retrospective group (P < 0.01). It is indicated that DSCTA yields not only high quality images but lower radiation doseunder the
permission of heart rate or rhythm, which suggests that DSCTA could be clinically useful for assessing postoperativecoronary stenting.%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. 【总页数】5页(9792-9796)
【关键词】体层摄影;双源CT;冠状血管造影;支架;前门控技术 【作者】鲍健;陈宏伟;方向明
【作者单位】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;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;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 【正文语种】中文 【中图分类】R318
【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-tissue-engineering-research_thesis/0201252236074.html 【相关文献】
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低剂量双源CT冠状动脉成像在支架置入后复查中的应用
