Exploratory investigation of virtual lesions in gastrointestinal endoscopy using a novel phase‐shift method for three‐dimensional shape measurement
Rattachement africain : jp. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Accurate measurement of the size of lesions or distances between any two points during endoscopic examination of the gastrointestinal tract is difficult owing to the fisheye lens used in endoscopy. To overcome this issue, we developed a phase-shift method to measure three-dimensional (3D) data on a curved surface, which we present herein. Our system allows the creation of 3D shapes on a curved surface by the phase-shift method using a stripe pattern projected from a small projecting device to an object. For evaluation, 88 measurement points were inserted in porcine stomach tissue, attached to a half-pipe jig, with an inner radius of 21 mm. The accuracy and precision of the measurement data for our shape measurement system were compared with the data obtained using an Olympus STM6 measurement microscope. The accuracy of the path length of a simulated protruded lesion was evaluated using a plaster model of the curved stomach and graph paper. The difference in height measures between the measurement microscope and measurement system data was 0.24 mm for the 88 measurement points on the curved surface of the porcine stomach. The error in the path length measurement for a lesion on an underlying curved surface was <1% for a 10-mm lesion. The software was developed for the automated calculation of the major and minor diameters of each lesion. The accuracy of our measurement system could improve the accuracy of determining the size of lesions, whether protruded or depressed, regardless of the curvature of the underlying surface.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Exploratory investigation of virtual lesions in gastrointestinal endoscopy using a novel phase‐shift method for three‐dimensional shape measurement
- Date Crossref
- 08/05/2024
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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National Cancer Center Hospital East Endoscopy Division pays non établi dans la noticeÉtablissement de santé
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Olympus (Japan) pays non établi dans la noticeEntreprise
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Endoscopy Division National Cancer Center Hospital Tokyo Japan pays non établi dans la noticeÉtablissement de santé
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Division of Science and Technology for Endoscopy Exploratory Oncology Research and Clinical Trial Center National Cancer Center Tokyo Japan Division of Science and Technology for Endoscopy pays non établi dans la noticeÉtablissement de santé
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Optical Engineering Olympus Medical Systems Corporation Tokyo Japan pays non établi dans la noticeInstitution
Endoscopy Division — National Cancer Center Hospital East, Olympus (Japan) et Endoscopy Division National Cancer Center Hospital Tokyo Japan, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.