摘要
目的 应用能量多普勒及超声造影在微波凝固治疗兔VX2 肝癌后进行疗效评价。方法 建立 10个VX2 肝癌模型 ,开腹对VX2 肿瘤行微波辐射 (波长 9mm)治疗 ,每次 60W× 12 0s。微波治疗前后均行二维、能量多普勒及超声造影 (Levovist ,3 0 0mg/ml,0 .3ml/kg)观察 ,取肿瘤标本行病理检查。结果微波治疗即刻二维超声示沿微波天线呈强回声窄带样改变 ,周围呈较宽而均匀的低回声 ,肿瘤边缘变得不清晰。微波治疗后能量多普勒检查 4只VX2 肿瘤结节见血流增强信号 ,而超声造影示 10只VX2 肿瘤结节均可见血流增强信号 ,病理证实为不完全坏死。结论 超声造影能更灵敏地评价微波凝固治疗VX2 肿瘤的疗效 ,残存瘤组织表现为肿瘤内持续造影增强。
Objective To evaluate the value of power Doppler and contrast-enhanced ultrasonography in the detection of tumor after microwave tissue coagulation (MTC). Methods Ultrasound Microwave Theraphy-1 (UMT-1) equipment was used,and a 9 mm length antenna was inserted directly into the tumor at laparotomy in 10 VX 2-bearing rabbits. The energy output was 60 W×120 s per bout. Two-dimensional, power and contrast-enhanced (Levovist, 300 mg/ml, 0.3 ml/kg) imaging was performed pre- and post-treatment. Pathology examination was applied in contrast. Results Along the needle being narrow hyper echoic imaging, broad-equable hypo echoic imaging was observed around the center after MTC immediately and the edge of tumor was unclear. Intratumoral blood flow was observed in 4 VX 2 tumors with power ultrasonography while there was enhanced-signal in 10 VX 2 tumors using contrast-enhanced ultrasonography. These tumors were confirmed incomplete necrosis by pathology. Conclusions Contrast-enhanced power Doppler ultrasonography shows more sensitive in assessing the therapeutic effect of microwave on VX 2 tumor. Residual tumor can be seen as persistent color enhancement by using contrast-enhanced ultrasonography.
出处
《中华超声影像学杂志》
CSCD
2004年第3期218-220,共3页
Chinese Journal of Ultrasonography
关键词
能量多普勒
微波凝固
治疗
兔
肝癌
超声造影
Ultrasonography
Contrast media
Microwaves/therapeutic use
Liver neoplasms
