Comparison between A-mode ultrasonography and radiography in the diagnosis of maxillary sinus diseases

Abstract

A-mode ultrasound examination of the maxillary was compared with radiological examination in 387 subjects suggestive of paranasal sinus diseases to detect sensitivity, specificity and confidence of the ultrasonography in the diagnosis of the maxillary sinus diseases. Ultrasound tracings were obtained with Atmos model ultrasound and the records were interpreted by the same two authors. Waters' view radiography was performed on all patients. The patients were classified according to their age. In the adult group; ultrasonography had an overall sensitivity of 68%, specificity of 93% and confidence of 85% in the detection of secretion; sensitivity of 95%, specificity of 92% and confidence of 93% in the detection of mucosal thickening; sensitivity of 66%, specificity of 86% and confidence of 84% in the detection of cystic lesion of the maxillary sinus. In the children group; ultrasonography had an overall sensitivity of 92%, specificity of 3% and confidence of 93% in the detection of secretion; sensitivity of 95%, specificity of 94% and conficience of 95% in the detection of mucosal thickening, sensitivity of 50%, specificity of 97%, confidence of 95% in the detection of cystic lesion of the maxillary sinus. When compared with surgical findings, Water's view radiography and ultrasonography of the maxillary sinus, A-mode ultrasonography with a sensitivity of 94% seemed to be a reliable diagnostic method in the diagnosis of maxillary sinus diseases and it also gave useful information in the follow up course of the therapy of paranasal sinus diseases.