CAJ | 학술논문

目的观察心脏X综合征患者的双嘧达莫负荷心肌201TI SPECT显像特点,分析其表现机制.方法选取临床符合心脏X综合征诊断标准的患者29例,按体质量0.56 mg/kg予双嘧达莫,于4 min内静脉注射,10及240 min后分别进行双嘧达莫负荷心肌201T1 SPECT显像,原始图像经三维重建后由2位以上有经验的核医学科医师进行分析.结果所有29例患者的双嘧达莫负荷201T1图像(10 min)均显示左室心肌放射性分布正常.延迟(240 min)显像时有25例(86.2%)患者(共200个节段)出现部分心肌节段反向放射性分布稀疏或缺损,即"反向再分布",共累及34个节段:前壁6个(17.6%)、下壁10个(29.4%)、前间壁4个(11.8%)、心尖部11个(32.4%)、前侧壁3个(8.8%).后间壁、后侧壁和后壁无放射性分布异常;其余4例(13.8%)患者延迟显像则为放射性分布正常.结论双嘧达莫负荷心肌201T1 SPECT显像的"反向再分布"现象对于心脏X综合征的诊断具有一定的临床意义.
목적 관찰심장X종합정환자적쌍밀체막부하심기201TI SPECT현상특점,분석기표현궤제.방법 선취림상부합심장X종합정진단표준적환자29례,안체질량0.56 mg/kg여쌍밀체막,우4 min내정맥주사,10급240 min후분별진행쌍밀체막부하심기201T1 SPECT현상,원시도상경삼유중건후유2위이상유경험적핵의학과의사진행분석.결과 소유29례환자적쌍밀체막부하201T1도상(10 min)균현시좌실심기방사성분포정상.연지(240 min)현상시유25례(86.2%)환자(공200개절단)출현부분심기절단반향방사성분포희소혹결손,즉"반향재분포",공루급34개절단:전벽6개(17.6%)、하벽10개(29.4%)、전간벽4개(11.8%)、심첨부11개(32.4%)、전측벽3개(8.8%).후간벽、후측벽화후벽무방사성분포이상;기여4례(13.8%)환자연지현상칙위방사성분포정상.결론 쌍밀체막부하심기201T1 SPECT현상적"반향재분포"현상대우심장X종합정적진단구유일정적림상의의.
Objective The aim of the study was to clarify the imaging characteristics of dipyri-damole 201T1 SPECT myocardial imaging in patients with syndrome X. Methods Twenty-nine patients diag-nosed with syndrome X were enrolled in this study. They all underwent dipyridamole (intravenous injection of 0.56 mg/kg within 4 min) 201T1 SPECT myocardial perfusion imaging. Images were interpreted by more than two experienced nuclear medicine physicians. Results In stress images showed normal in all. In rest-ing images, 86.2% (25/29) were abnormal with perfusion defects at anterior wall in6 (17.6%), at infe-rior wall in 10 (29.4%), at antero-septal wall in 4 (11.8%), at apex in 11 (32.4%), and at antero-lat-end wall in 3 (8.8%). Conclusion High correlation of reverse redistribution of dipyridamole 201T1 SPECT myocardial imaging and syndrome X was observed.