Fig. 3From: The technical features of the diagnosis or treatment of coronary artery disease through the distal radial artery approach at the anatomical snuffbox compared with the conventional radial artery approachColor Doppler ultrasound images. A Normal distal radial artery. B. Distal radial artery occlusion and loss of blood flow signals (blue arrow). C Distal radial artery occlusion and occluded hypoechoic mass (blue arrow)Back to article page