MYOCARDIAL VIABILITY AND PERFUSION RESERVE IMAGING

该项目的目的是开发和应用改进的 心肌灌注定量方法，心肌血流 储备和墙动态的影响进行评估， 冠心病 协议强调流量定量 使用PET检测功能障碍 可逆性和定量冠状动脉灌注储备。 一 主要假设是定量PET灌注能够显示 功能障碍的心肌节段恢复的可能性 在血运重建手术后， 定量上级于氟代脱氧葡萄糖蓄积模式 或其他当代非侵入性方法用于评估 生存能力。 将接受旁路手术的40名患者将 研究了 一种新的122 I/122发生器灌注示踪剂 可以取代现场回旋加速器的需要， 灌注研究明显更经济和实用， 1220的新来源。 技术进步， MRI可以挑战PET方法用于评估缺血性心脏 因此，这些MRI方法将 与第4年和第5年的最佳PET方法相比。 四 心脏病专家（三名核医学专家）和一名 心脏放射科医生也被包括在内， 科学家需要技术。

The purpose of this project is to develop and apply improved methods of myocardial perfusion quantitation, myocardial flow reserve and wall dynamics for the evaluation of the effects of coronary artery disease. The protocols emphasize flow quantitation using PET with applications to detection of dysfunctional reversibility and to quantitation of coronary perfusion reserve. A major hypothesis is that quantitative PET perfusion is able to show the likelihood that dysfunctional myocardial segments will recover following revascularization procedures and that perfusion quantitation is superior to fluorodeoxyglucose accumulation patterns or other contemporary non-invasive approached being used to assess viability. Forty patients who are to receive by-pass surgery will be studied. A new perfusion tracer using the 122Xe/122I generator could replace the need for an on site cyclotron and make Pet perfusion studies markedly more economical and practical in view of the new sources for 122Xe. The technological improvements in MRI could challenge PET methods for evaluation of ischemic heart disease and perfusion reserve thus these MRI methods will be compared to the best of the PET methods in years 4 and 5. Four cardiologists (three with the nuclear medicine specialty) and a cardiac radiologist have been included in addition to the medical scientist developing needed technology.