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Comparative Study
. 2016;45(3):20150419.
doi: 10.1259/dmfr.20150419. Epub 2016 Feb 3.

Utilization of computer-aided detection system in diagnosing unilateral maxillary sinusitis on panoramic radiographs

Yasufumi Ohashi  1 , Yoshiko Ariji  1 , Akitoshi Katsumata  2 , Hiroshi Fujita  3 , Miwa Nakayama  1 , Motoki Fukuda  1 , Michihito Nozawa  1 , Eiichiro Ariji  1
Affiliations
Comparative Study

Utilization of computer-aided detection system in diagnosing unilateral maxillary sinusitis on panoramic radiographs

Yasufumi Ohashi et al. Dentomaxillofac Radiol. 2016.

Abstract

Objectives: It is unclear whether computer-aided detection (CAD) systems for panoramic radiography can help inexperienced dentists to diagnose maxillary sinusitis. The aim of this study was to clarify whether a CAD system for panoramic radiography can contribute to improved diagnostic performance for maxillary sinusitis by inexperienced dentists.

Methods: The panoramic radiographs of 49 patients with maxillary sinusitis and 49 patients with healthy sinuses were evaluated in this study. The diagnostic performance of the CAD system was determined. 12 inexperienced dentists and 4 expert oral and maxillofacial radiologists observed the total of 98 panoramic radiographs and judged the presence or absence of maxillary sinusitis, under conditions with and without the support of the CAD system. The receiver operating characteristic curves of the two groups were compared.

Results: The CAD system provided sensitivity of 77.6%, specificity of 69.4% and accuracy of 73.5%. The diagnostic performance of the inexperienced dentists increased with the support of the CAD system. When the inexperienced dentists diagnosed maxillary sinusitis with CAD support, the area under the curve (AUC) was significantly higher than that without CAD support. When the focus was only on panoramic radiographs in which CAD support led to a correct diagnosis, the AUC of the inexperienced dentists increased to an equivalent level to that of the experienced radiologists.

Conclusions: The CAD system supported the inexperienced dentists in diagnosing maxillary sinusitis on the panoramic radiographs. If the accuracy of the CAD system can be increased, the benefits of CAD support will be further enhanced.

Keywords: computer-aided detection; maxillary sinusitis; panoramic radiography.

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Figures

Figure 1
Figure 1
Results of the computer-aided detection system. The left maxillary sinus was judged as disease (displayed in red), whereas the right sinus was judged as healthy (displayed in green). For colour image see online.
Figure 2
Figure 2
Receiver operating characteristic curves. The blue dotted line shows the curve for the interpretation without computer-aided detection (CAD) in the inexperienced group. The blue solid line shows the curve for the interpretation with CAD in the inexperienced group. The blue broken line shows the curve for the interpretation with CAD100 in the inexperienced group. The red dotted line shows the curve for the interpretation without CAD in the experienced group. The red solid line shows the curve for the interpretation with CAD in the inexperienced group. FPF, false-positive fraction; TPF, true-positive fraction. For colour image see online.
See this image and copyright information in PMC

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