Methods:The parameters of TIC were obtained by acoustic densitometry(AD)technology pre and post acetylcholine(Ach)injection in 12 dogs. The correlativity was analysed between the parameters and CFR.

• 方法 :对 12条犬于注射乙酰胆碱 (Ach)前、后分别重复进行心肌声学造影 ,采用声学密度定量 (AD)技术获取心肌声学造影 TIC各项参数 ,并分析各项参数于注射 Ach后、前的比值与 CFR的相关性。