To investigate the clinical application of high frequency color Doppler ultrasonography in predicating and evaluating the survival of flaps used for reconstruction in the oral and maxillofacial region after tumor resection.

A retrospective analysis was performed on ten patients who underwent oral and maxillofacial tumor resection and tissue flap repair and reconstruction at Beijing Friendship Hospital Affiliated to Capital Medical University from September 2017 to September 2020. High frequency color Doppler ultrasonography was used to monitor the movement, inner diameter, peak systolic velocity (PSV), and internal and peripheral echo changes of the reconstructed vessels in the transplanted flap. At the same time, the color and skin temperature of the flap were observed clinically to evaluate the status of the vessels and the survival of the flap.

All the ten patients showed different degrees of skin edema; anastomosis of arteriovenous vessels could be displayed in nine (9/10) cases, and could not in one. Postoperative complications occurred in four cases; in one of these cases, the anastomosis could not be displayed after surgery, the skin temperature decreased, the flap color was abnormal within 7 days after surgery, and the flap necrosis occurred finally. The other nine patients did not have flap necrosis, flap color change, or flap temperature reduction.

High frequency color Doppler ultrasound can be used to monitor the anastomosis of arteriovenous vessels after flap transplantation, and it has appreciated value in evaluating the survival of flaps transplanted after the resection of oral and maxillofacial tumors.