ArticleClinical oral investigations2025
Pseudo-color enhancement of CBCT images as a diagnostic tool for radicular cysts and periapical granulomas: A clinical feasibility study.
Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThe aim of this work was to present a novel, non-invasive, and cost-effective technique to effectively distinguish between radicular cysts and periapical granulomas. This approach involves the application of pseudo-color enhancement to cone-beam CT imaging data, which has the potential to provide clinicians with valuable preliminary diagnostic information prior to more invasive investigative procedures. MATERIALS AND
methodsThe study involved a total of 57 cases, including both radicular cysts and periapical granulomas, with cone-beam CT scans obtained for each case. The DICOM data were imported into an open-access software (R2Gate), and a pseudo-color enhancement tool was then applied to visualize the color distribution patterns within each case. A scoring system was subsequently developed based on the observed color distribution characteristics. Two blind investigators independently assessed and classified each case according to their diagnostic findings. The statistical analysis involved the use of the independent t-test to compare the two groups with normal distributions, and the categorical data were represented as numbers and percentages. The significance level for the statistical findings was set at 5%.
resultsThe reliability of the intra-examiner reliability was evaluated and showed high agreement (0.965). With regard to the inter-examiner reliability, it revealed high agreement (0.930). A statistically significant difference (p = 0.002) was revealed between the two groups (cysts and granulomas) according to the scoring system. The results showed that all cystic lesions were categorized in score 2 while 29 of cases diagnosed granulomas histopathologically (out of 49) followed score 1.
conclusionWithin the settings of this study, it was possible to distinguish between radicular cysts and periapical granulomas with the pseudo-color enhancement of cone-beam CT images. CLINICAL RELEVANCE: To date, no studies have evaluated the validity of using pseudo-color enhancement, available in open-access cone-beam CT software, for differentiating between radicular cysts and periapical granulomas. This novel technique holds promise as a non-invasive and affordable approach to distinguish these two common periapical lesions.
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