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作 者:杨敏福[1] 蒋雄京 窦克非[3] 郭新华[1] 何作祥[1]
机构地区:[1]中国医学科学院、中国协和医科大学阜外心血管病医院核医学科,北京100037 [2]中国医学科学院、中国协和医科大学阜外心血管病医院高血压诊治中心,北京100037 [3]中国医学科学院、中国协和医科大学阜外心血管病医院冠心病诊治中心,北京100037
出 处:《中华核医学杂志》2008年第3期188-190,共3页Chinese Journal of Nuclear Medicine
摘 要:目的评价放射性核素心肌显像在大动脉炎心脏受累患者中的应用价值。方法回顾性分析12例临床确诊大动脉炎且有心脏受累,并接受了放射性核素心肌显像和冠状动脉造影患者的临床和心肌显像资料。12例患者中,男3例,女9例,年龄(35±15)岁。将12例患者的心脏受累分为单纯主动脉瓣受累(4例)和冠状动脉受累而无主动脉瓣受累(8例)。单纯主动脉瓣受累的患者中,运动和药物负荷^99Tc^m-甲氧基异丁基异腈(MIBI)心肌灌注显像各1例,另2例进行了静息心肌灌注显像;冠状动脉受累的患者中,4例进行了心肌灌注显像(运动和药物负荷心肌灌注显像各1例,静息心肌灌注显像2例),另外4例进行了^99Tc^m-MIBI和^18F-脱氧葡萄糖(FDG)双核素心肌灌注-代谢显像。结果单纯主动脉瓣受累的4例患者心肌灌注显像表现为左心室扩大,无明显的心肌灌注异常。冠状动脉受累的8例患者中,2例有可逆性心肌缺血,其余6例静息显像即有灌注受损,灌注受损的心肌可存活或不存活。结论对于大动脉炎心脏受累的患者,放射性核素心肌显像可提供心室形态、心肌灌注和活力等方面的综合信息。Objective The aim of the study was to assess the value of radionuclide myocardial imaging in the evaluation of cardiac involvement in patients with Takayasu arteritis (TA). Methods The ^99Tc^m-methoxyisobutylisonitrile myocardial perfusion imaging ( MIBI-MPI ) and (or) ^18F-fluorodeoxyglucose (FDG) PET imaging findings in 12 TA patients [3 men and 9 women, mean age (35 ± 15) years] with coronary lesions ( CL; n = 8) or aortic insufficiency ( AI; n = 4) were retrospectively reviewed and analysed. Of the 4 AI-TA patients, 1 underwent exercise MIBI-MPI, 1 underwent pharmacologic stress MIBI-MPI and 2 underwent resting MIBI-MPI. Of the 8 CL-TA patients, 4 underwent MIBI-MPI (2 stress and 2 rest) and 4 underwent a dual-isotope simultaneous acquisition (DISA) SPECT protocol after injection of MIBI and FDG. Results All 4 AI-TA patients showed left ventricular enlargement but no perfusion abnormalities. In 3 CLTA patients with no documented infarct, MPI or DISA showed stress ischemia ( n = 2 ) or mismatched perfu- sion-metabolism defects ( n = 1 ). In the remaining 5 CL-TA patients with documented infarcts, 2 showed large perfusion defects on resting MIBI and 3 showed matched perfusion-metabolism defects on DISA SPECT. Conclusion Radionuclide imaging is useful in providing a comprehensive functional evaluation for TA patients with cardiac involvement.
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