间歇式谐波显像声学造影评价肾实质血流灌注

Assessment of renal perfusion with intermittent harmonic imaging

目的：评价间歇式谐波显像观察肾实质血流灌注声学造影的优越性。方法：自制的白蛋白包裹氟碳气体的造影剂对８只兔外周静脉造影。分别用基波显像、基波间歇显像、二次谐波显像、间歇式谐波显像四种成像方式观察造影效果。结果：间歇式谐波显像的视觉效果分级最高，视频密度值高达１６０．７４±３．７２，与其它组差异显著（Ｐ＜０．０１），较基波显像延长造影峰值半降时间（１６．７±３．６ｓ，８．４±１．８ｓ），差异显著（Ｐ＜０．０１）。结论：间歇式谐波显像能增强肾实质造影信号强度，延长造影时间，是一种较好的造影显像方法。

Objective:To assess contrast ultrasonography of renal perfusion with intermittent harmonic imaging(IHI) .Methods: 8 rabbits were imaged with four imaging modes after intravenously injection of perfluorocarbon-filled microbubbles. Results: The video intensity with I- HI was the highest(160. 74 ± 3. 72). The half time of enhancement was prolonged with IHI than fundamental imaging(16. 7 ± 3. 6s vs 8. 4 ± 1. 8s, P < 0. 01 ). Conclusion: IHI improved contrast enhancement in renal perfusion.