因为对一些肝脏受累的患者采用非手术或非根治性手术的方法或许更好些，因此术前准确地判定肝脏状况很重要。然而现时常用的影像检查方法如CT、超声（us）及核磁共振（MR）对检出一些小的肝转移癌作用很有限，因此需要改变一些诊断方法。既往有研究应用双重／彩色多普勒超声（D Because it may be better to use non-surgical or non-radical surgery for some patients with liver involvement, it is important to accurately determine the condition of the liver before surgery. However, the commonly used image examination methods such as CT, ultrasound (us) and nuclear magnetic resonance (MR) have a very limited effect on detection of some small liver metastases. Therefore, some diagnostic methods need to be changed. Previous studies have applied dual/color Doppler ultrasound (D