Choi B I, Kim T K, Han J K, Chung J W, Park J H, Han M C
Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Korea.
Radiology. 1996 Jul;200(1):55-8. doi: 10.1148/radiology.200.1.8657945.
To compare power and conventional color Doppler sonography in the depiction of the intratumoral vasculature of hemangiomas, hepatocellular carcinomas (HCCs), and metastases of the liver.
Thirty-two patients with liver tumors (12 hemangiomas, 11 HCCs, and nine metastases) were prospectively evaluated with power and conventional color Doppler sonography by using a 2-4-MHz convex probe with 2-MHz Doppler frequency. Power Doppler sonography was performed with a 75%-88% gain. Conventional color Doppler sonography was performed with a 55%-75% gain and a pulse repetition frequency of 700 Hz. Power Doppler signals and color Doppler signals interrogated in one plane were analyzed by two radiologists, who subjectively rated power Doppler sonography as superior, equal, or inferior to color Doppler sonography.
Overall, power Doppler sonography was superior to color Doppler sonography in 18 patients and equal in 14 (P < .01). In hemangiomas, power Doppler sonography was superior to color Doppler sonography in 10 patients and equal in two (P < .01). In HCCs, power Doppler sonography was superior to color Doppler sonography in four patients and equal in seven (P > .05). In metastases, power Doppler sonography was superior to color Doppler sonography in four patients and equal in five (P < .05).
Power Doppler sonography is more sensitive than color Doppler sonography in the depiction of the vasculature of liver tumors, particularly in hemangiomas.
比较能量多普勒超声与传统彩色多普勒超声在显示肝血管瘤、肝细胞癌（HCC）及肝转移瘤瘤内血管方面的表现。
前瞻性评估32例肝肿瘤患者（12例肝血管瘤、11例HCC和9例转移瘤），使用2 - 4MHz凸阵探头、多普勒频率为2MHz，分别行能量多普勒超声及传统彩色多普勒超声检查。能量多普勒超声检查增益设置为75% - 88%。传统彩色多普勒超声检查增益设置为55% - 75%，脉冲重复频率为700Hz。两位放射科医生分析在同一平面获取的能量多普勒信号及彩色多普勒信号，主观评价能量多普勒超声优于、等同于或劣于彩色多普勒超声。
总体而言，能量多普勒超声在18例患者中优于彩色多普勒超声，14例两者相当（P <.01）。在肝血管瘤中，能量多普勒超声在10例患者中优于彩色多普勒超声，2例两者相当（P <.01）。在HCC中，能量多普勒超声在4例患者中优于彩色多普勒超声，7例两者相当（P >.05）。在转移瘤中，能量多普勒超声在4例患者中优于彩色多普勒超声，5例两者相当（P <.05）。
在显示肝肿瘤血管方面，能量多普勒超声比彩色多普勒超声更敏感，尤其是在肝血管瘤中。
