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Master's Dissertation
DOI
https://doi.org/10.11606/D.25.2023.tde-19052023-091336
Document
Author
Full name
Leticia Dantas Grossi
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2023
Supervisor
Committee
Bullen, Izabel Regina Fischer Rubira de (President)
Santos, Paulo Sergio da Silva
Soares, Mariana Quirino Silveira
Tolentino, Elen de Souza
Title in Portuguese
Efeito do processamento de imagem no diagnóstico diferencial de lesões ósseas dos maxilares
Keywords in Portuguese
Cistos odontogênicos
Diagnóstico por imagem
Radiografia panorâmica
Tomografia computadorizada de feixe cônico
Abstract in Portuguese
O objetivo deste estudo foi investigar a acurácia diagnóstica de cinco imagens de queratocistos odontogênicos e cinco imagens de cistos ósseo simples (radiografia panorâmica, RP, e tomografia computadorizada de feixe cônico, TCFC) submetidas ao processamento de imagem. Para cada lesão foram montados painéis de imagem para análise do examinador através de um questionário. As imagens foram processadas com diferentes recursos de aprimoramento oferecidos pelo software GIMP (filtros de realce de borda e de suavização). Desta forma, no total, obteve-se 20 exames RP e 20 exames TCFC (20 panorâmicas, sendo 10 com processamento e 10 sem processamento e 20 imagens de tomografia computadorizada de feixe cônico, sendo 10 imagens com processamento e 10 imagens sem processamento). A análise das imagens projetadas foi realizada por 8 examinadores com o conhecimento prévio de Radiologia Odontológica e Imaginologia por meio da aplicação de um questionário. Esse estudo mostrou que o processamento de imagem não foi um fator preditivo de acerto em nenhum questionário (p = 0,642 e p = 0,678), por outro lado, o tipo de lesão (p<0,001) e o tipo de imagem foram (p = 0,004). As imagens de RP obtiveram maior chance de acerto em relação as imagens de TCFC (OR=3,033, IC=1,418-6,487). Através dos resultados dessa pesquisa, concluímos que embora o processamento de imagem não tenha sido um fator preditivo de acerto em ambos os questionários, o tipo de obtenção de imagem foi. Além disso, o tipo de lesão teve impacto de maneira significativa no acerto.
Title in English
Effect of image processing on the differential diagnosis of jaw bone lesions
Keywords in English
Cone-Beam computed
Diagnostic imaging
Odontogenic cysts
Panoramic radiography
Tomography
Abstract in English
The aim of this study was to investigate the diagnostic accuracy of five images of odontogenic keratocysts and five images of simple bone cysts (panoramic radiograph, RP, and cone beam computed tomography, CBCT) submitted to image processing. Image panels were mounted for each lesion for examiner analysis using a questionnaire. The images were processed with different enhancement features offered by the GIMP software (edge enhancement and smoothing filters). Thus, a total of 20 RP and 20 CBCT scans were obtained (20 panoramic, 10 with processing and 10 without processing, and 20 cone beam CT images, 10 with processing and 10 without processing). The analysis of the projected images was performed by 8 examiners with previous knowledge of dental radiology and imaging by applying a questionnaire. This study showed that image processing was not a predictive factor of correctness in any questionnaire (p = 0.642 and p = 0.678), on the other hand, the type of lesion (p < 0.001) and the type of image were (p = 0.004). The PR images had a higher chance of correct answers compared to CBCT images (OR=3.033, CI=1.418- 6.487). Through the results of this research, we conclude that although image processing was not a predictive factor of correctness in both questionnaires, the type of image acquisition was. In addition, the type of lesion had a significant impact on matching.
 
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Release Date
2025-02-16
Publishing Date
2023-05-22
 
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