Fig. 1From: Non-contrast-enhanced magnetic resonance angiography of facial arteries for pre-operative evaluation of vascularized submental lymph node flapsExamples of the image quality of 3D phase contrast magnetic resonance angiography (3D PC-MRA) to visualize the facial artery courses based on four-point score.0 = poor (a); 1 = questionable (b); 2 = adequate (c); and 3 = good (d). Green arrows indicate the facial artery courseBack to article page