Sulfur heteroatom substitution at the C4 position of 18F-labeled fatty acids yields a tracer that is retained in proportion to the beta-oxidation rates in mammalian tissue, particularly hypoxic myocardium. Most preferably, the invention is embodied in an [18F]fluoro-4-thia-fatty acid having a chain length of between 8 to 20 carbon atoms. The 18F-labeled 4-thia fatty acids of this invention find particular utility the radiolabelling of tissue sites (e.g., myocardium) for purposes of positron emission tomography.
在18F标记的
脂肪酸的C4位置进行
硫杂原子替换,可以得到一种示踪剂,其保留与哺乳动物组织中的β-氧化速率成比例,特别是在低氧心肌中。最好的情况下,该发明体现在具有8到20个碳原子链长的[18F]
氟-4-
硫-
脂肪酸中。本发明的18F标记的4-
硫脂肪酸在正电子发射断层扫描的组织部位(例如心肌)的放射性标记中具有特殊的实用价值。