Ultrasound-guided maxillary nerve block via the pterygopalatine fossa: maxillary artery is the key

To the Editor We thank Drs Qin and Xie for their interest in our paper, and we agree with their comments that the maxillary artery is an important landmark when performing the ultrasound-guided maxillary nerve block.[1–3][1] However, a high-frequency, small fingerprint ultrasound probe offers