摘要
目的 :评价瞬间反应二次谐波显像 (Transientresponsesecondharmonicimaging ,TRSHI)对正常肝脏声学造影的增强效果及动态变化规律 ,并与常规连续二次谐波显像进行对比分析。方法 :6只健康杂种犬经外周静脉注射氟碳声学造影剂 ,分别用常规二次谐波显像和瞬间反应式二次谐波显像扫描肝脏。造影效果评价使用视觉评分和视频密度分析。结果 :常规二次谐波显像有 4次 1级增强、4次 2级增强和 2次 3级增强 ;瞬间反应式二次谐波显像则有 1次 2级增强和 11次 3级增强。常规和瞬间显像产生的造影增强视频密度值分别为 12 9 0 6± 17 3 6和 161 2 4± 12 8(P <0 0 1)。结论 :瞬间反应式二次谐波显像可以显著提高肝脏声学造影效果。
Objective: To evaluate liver contrast effects and principle with tansient response second harmonic imaging (TRSHI) Methods: Six dogs were imaged with conventional harmonic imaging and TRSHI after intravenous injection of ultrasound contrast agent The subjective scores and video intensities were recorded and analyzed Results: TRSHI scored significantly higher in subjective evaluation than conventional imaging The video intensities obtained from conventional imaging and TRSHI were 129 06+17 36 and 161 24+12 8 respectively (P< 0 01) Conclusion: TRSHI can markedly enhance the contrast image of normal liver Thus it is better than conventional second harmonic imaging
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2000年第3期259-261,共3页
Journal of Third Military Medical University
