Abstract: Objective: To evaluate the clinical imaging features of oral and maxillofacial hypervascular tumors in oral and maxillofacial soft tissue by MDCT enhancement combined with CTA multi-dimensional technique. Methods: The degree of blood supply and indexes of 21 cases of hypervascular tumors were retrospectively analyzed, and the pathological results were used as the diagnostic gold standard to evaluate the sensitivity and specificity of MDCT plain scan and enhanced CTA multidimensional technology in the diagnosis of oral and maxillofacial soft tissue hypervascular tumors. The ROC curve was drawn to analyze and evaluate the efficacy. Results: Among 21 patients, the diagnostic accuracy of MDCT enhancement combined with CTA multidimensional technology was 90.48%, the AUC of venous phase CT value was 0.80, the sensitivity was 83.30%, and the specificity was 72.73%. Conclusion: MDCT enhancement combined with CTA multi-dimensional technology can be used to evaluate the blood supply of maxillofacial soft tissue hypervascular tumors before operation, and the CT value in the venous phase of tumors has the highest evaluation efficiency, which can reduce the risk of blood loss during maxillofacial hypervascular tumors. The preoperative non-invasive assessment of tumor blood supply has certain guiding significance for the formulation of clinical treatment plans.

Key words: maxillofacial soft tissue hypervascular tumor, multi-detector spiral computed tomography, CT angiography multidimensional imaging technique, application value