Imaging evaluation of recipient vessel of osteoradionecrosis of the mandible with vascularised flap reconstruction

Abstract

Objectives: To investigate colour duplex sonography (CDS) and computed tomography angiography (CTA) — two types of detection technology used in the evaluation of recipient vessel of osteoradionecrosis of the mandible with vascularised flap reconstruction, to provide guidance for surgeons, and reduce the risk of flap necrosis. Methods: 10 patients with osteoradionecrosis underwent surgery and vascularised flap reconstruction, CDS and CTA technology were used to detect the affected side of the neck, arteriovenous were detected before operation, and record the related vascular examination results, statistical analysis of inspection data. The results of the operation to be confirmed as the gold standard, the diagnostic test was designed to investigate the accuracy of CDS and CTA in the diagnosis. Results: 10 patients underwent reconstruction with fibula myocutaneous flap. CDS and CTA detected external maxillary artery occlusion in four cases (40%), external jugular vein occlusion in three cases (30%), and carotid artery stenosis, arterial wall calcification formation in one case; CDS could detect the vessel of blood dynamic before operation, and recipient area around soft tissue can be three-dimensional imaging display through CTA. Conclusion: CDS and CTA are used for the detection of osteoradionecrosis of vascular reconstruction of patients before surgery, can provide the recipient vessels without absence for surgery, haemodynamic course and syntopy precise information, can significantly reduce the risk of vascular tissue flap reconstruction failure.