Imaging Sci Dent.  2014 Dec;44(4):301-305. 10.5624/isd.2014.44.4.301.

The effect of radiographic imaging modalities and the observer's experience on postoperative maxillary cyst assessment

• Gang TI
• Huh KH
• Yi WJ
• Lee SS
• Heo MS
• Choi SC

• KMID: 1974499
• DOI: http://doi.org/10.5624/isd.2014.44.4.301

Abstract

PURPOSE
The purpose of this study was to compare the accuracy of postoperative maxillary cyst (POMC) diagnosis by panoramic radiographs versus computed tomography (CT) and by oral and maxillofacial radiologists versus non-specialists.
MATERIALS AND METHODS
Sixty-five maxillary sinuses with POMCs and 63 without any lesion were assessed using panoramic radiographs and CT images by five oral and maxillofacial radiologists and five non-specialists on a five-point scale. The areas under receiver operating characteristic (ROC) curves were analyzed to determine the differences in diagnostic accuracy between the two imaging modalities and between the two groups of observers. The intra-observer agreement was determined, too.
RESULTS
The diagnostic accuracy of CT images was higher than that of panoramic radiographs in both groups of observers (p<0.05). The diagnostic accuracy of oral and maxillofacial radiologists for each method was higher than that of non-specialists (p<0.05).
CONCLUSION
The use of CT improves the diagnosis of POMC, and radiological training and experience leads to more accurate evaluation.

Keyword

Maxillary Sinus; Cysts; Radiography, Panoramic; Tomography, X-Ray Computed, Observer Variation

MeSH Terms

Diagnosis
Maxillary Sinus
Pro-Opiomelanocortin
Radiography, Panoramic
ROC Curve
Pro-Opiomelanocortin

Figure

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  Fig. 1 A. Panoramic radiograph shows a postoperative maxillary cyst in the right maxillary sinus involving the inferior and posterolateral walls. B. An axial computed tomography (CT) image shows an expansile lesion with the anterior and posterolateral wall perforation of the maxillary sinus. C. A coronal CT image shows the lateral wall perforation of the right maxillary sinus.

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  Fig. 2 A. Panoramic radiograph shows a postoperative maxillary cyst in the right maxillary sinus due to maxillary orthognathic surgery. B. An axial CT image shows an expansile lesion with the anterior and posterolateral wall perforation in the maxillary sinus. C. A coronal CT image shows the lateral wall perforation and surgical screw with the right maxillary sinus.

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