^<99m>Tc labeled N-pyridoxylidenehydrazine-N', N'-diacetic acid and related hydrazones were evaluated as hepatobiliary imaging agents. Hydrazones used in the study were N-pyridoxylidenehydrazine-N', N'-diacetic acid (PLHzDA), N-(3-hydroxy-4-pyridylmethylene) hydrazine-N', N'-diacetic acid (FHPHzDA), N-(4-pyridylmethylene) hydrazine-N', N'-diacetic acid (INHzDA), and N-pyridoxylidene-N', N'-dimethylhydrazine (PLDMHz). The hydrazones were labeled with 99mTc by the SnCl2 method and the 99mTc labeling was examined by thin-layer chromatography and high-performance liquid chromatography. 99mTc labeled hydrazones were administered to golden hamsters, and the distribution indicated that clearance occurred through the hepatobiliary system. Scintigraphic studies in rabbits indicated that 99mTc-labeled PLHzDA and FHPHzDA are useful hepatobiliary radiotracers.
评估了^<99m>Tc标记的N-
吡哆叉
肼-N',N'-二
乙酸及其相关腙作为肝胆显像剂的效果。研究中所用的腙包括:N-
吡哆叉
肼-N',N'-二
乙酸(PLHz
DA)、N-(3-羟基-4-
吡啶亚甲基)
肼-N',N'-二
乙酸(FHPHz
DA)、N-(4-
吡啶亚甲基)
肼-N',N'-二
乙酸(INHz
DA)和N-
吡哆叉-N',N'-二甲基
肼(PL
DMHz)。这些腙通过SnCl2方法被标记为^<99m>Tc,其标记效果通过薄层色谱和高性能
液相色谱进行检验。将^<99m>Tc标记的腙注射给
金色仓鼠,分布研究表明其通过肝胆系统清除。在兔子上的闪烁成像研究表明,^<99m>Tc标记的PLHz
DA和FHPHz
DA是有效的肝胆放射性示踪剂。