Spatial agreement of demineralized areas in quantitative light-induced fluorescence images and digital photographs
Autor: | Benjamin Berkels, Ulrike Fritz, Thomas M. Deserno, Eva E. Ehrlich, Rosalia Tatano |
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Rok vydání: | 2018 |
Předmět: |
Adult
Male Materials science genetic structures Adolescent Light Dental Caries 030218 nuclear medicine & medical imaging 03 medical and health sciences Random Allocation Young Adult 0302 clinical medicine Optics Humans Radiology Nuclear Medicine and imaging Child General Dentistry Tooth Demineralization Random allocation business.industry Quantitative Light-Induced Fluorescence Photography 030206 dentistry General Medicine stomatognathic diseases Otorhinolaryngology Photography Dental Light induced Female business Tooth Research Article |
Zdroj: | Dento maxillo facial radiology. 47(8) |
ISSN: | 0250-832X |
Popis: | OBJECTIVES: Previous work has shown qualitatively that detection of demineralized tooth areas (white spot lesions, WSLs) is more reliable in digital photographs (DP) as in quantitative light-induced fluorescence (QLF) images. Based on non-rigid, multimodal image registration, we now quantitatively compare manual and automatic markings in both modalities. METHODS: : After braces removal, pairs of DP and QLF were acquired from 124 teeth of 31 patients. Three experienced raters marked the WSL on both DP and QLF images, each of which was presented twice in randomized order. For each tooth and each modality, a ground truth (GT) was established using the simultaneous truth and performance level estimation algorithm on the total of six manual markings per image. DP and QLF image pairs were spatially registered, by aligning the outline of the tooth area in DPs to that of the corresponding tooth area in QLF. Between all pairs of markings for all teeth, position and size were compared quantitatively by the Dice coefficient and the novel coefficient of inclusion. RESULTS: : Our hypotheses: (i) the clinical inspection supported by DP is more sensitive to WSL as that by QLF, disregarding whether the automatic analysis or the experts’ manual assessment of QLF is applied, and (ii) detected lesions in QLF are included in those of DP, were confirmed and not confirmed, respectively. CONCLUSION: DP and QLF are valuable methods to detect WSL in demineralized teeth. Combining both modalities can provide additional information on early lesion assessment. |
Databáze: | OpenAIRE |
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