The versatility of color Doppler ultrasound is that the scanning can be performed for usual physiological conditions with multiplanar capability without necessitating contrast injection.

• 这是因为彩色超音波可做重覆及多切面观察，且在病人一般生理情况下进行扫描不受外力注射显影剂影响，因此较血管摄影呈现更清楚与正确的诊断。