Optimized enhanced acceleration selective arterial spin labeling (eAccASL) for non-gated and non-enhanced MR angiography of the hands

•enhanced acceleration selective arterial spin labeling (eAccASL) was introduced as non-enhanced MRA for peripheral artery.•We optimized the eAccASL for MRA of the hands, and to investigate the factors for MRA visibility of the hands.•·We compared four different acceleration-encoding (AENC) values (i.e., 0.12, 0.29, 0.58, and 0.87 m/s2).•Qulitative scores of proximal and distal artery at AENC 0.12 and 0.29 were significantly better than those at AENC 0.87.•eAccASL MRA of the hands was optimized by using low AENC values (0.12–0.29 m/s2).