Media Co., Ltd.

Gifu University

Akitoshi Katsumata

Tatsuro Hayashi

Hironobu Tsuji

Yosuke Tsuji

Hiroshi Fujita

Takeshi Hara

Chisako Muramatsu

Kazuki Horiba

Shinya Saito

Kaoru Kobayashi

Kazuhumi Suzuki

Shinji Shimoda

Vladimir Volevich

Provided is an apparatus for measuring the thickness, roughness, and morphology index of the mandibular cortical bone using a dental panorama image to assist in the diagnosis of osteoporosis, wherein the thickness, roughness, and morphological index of the cortical bone is measured more accurately and the diagnosis of osteoporosis can be supported more accurately. An osteoporosis diagnostic support apparatus, wherein the apparatus has a contour extraction unit adapted to extract a mandibular contour from an image of a mandibular cortical bone photographed by a photographic apparatus adapted to photograph the mandibular cortical bone and surroundings thereof, a line segment extraction unit adapted to extract line segments from the image of the mandibular cortical bone photographed by the photographic apparatus; and a cortical bone thickness calculation unit adapted to calculate a thickness of the cortical bone based on the extracted mandibular contour and line segments.

Osteoporosis diagnostic support apparatus

Provided are: a device () and a system () for quantitatively calculating bone density by using an X-ray image of a bone pail, in particular, an alveolar bone; and an imaging assisting tool () for accurately and easily performing X-ray imaging of an alveolar bone. This bone density measurement device () comprises: an image display unit () for displaying X-ray images for an imaged bone part and a reference body on the same screen; a reference body density measurement unit () for measuring the density of the displayed X-ray image for the reference body; a bone part density measurement unit () for measuring the density of the displayed X-ray image for the bone part; and a bone density calculation unit () for calculating the hone density of the bone part by comparing the density of the X-ray image for the bone part with the density of the X-ray image for the reference body.

Bone density measurement device, bone density measurement system, and imaging assisting tool

The method for periodontal disease measurement of the present invention includes: using a plurality of cross-sectional images provided by x-ray CT images of teeth and periodontal tissues to detect a contour of each tooth in each cross-sectional image, detect a dentition, and provide a dental formula; detecting the positions of the root apex, the alveolar crest, and the crown of each tooth from the detected tooth contour data; calculating at least one of a distance indicator, a volume indicator, a surface area indicator, a first moment indicator, a center-of-gravity indicator, and an alveolar bone indicator from the detected tooth contour data, and the position data of the root apex, the alveolar crest, and the crown of the tooth; and measuring the progression of periodontal disease based on at least one calculated indicator.

Method for periodontal disease measurement

A diagnosis support system includes a diagnosis support computer that includes a model data acquisition unit configured to obtain a plurality of mandible model data, a contour model creation unit configured to create contour model data from the mandible model data, a contour database storage unit configured to construct a contour model database from the contour model data, a diagnosis image data receiving unit configured to receive an input of diagnosis image data of an examinee, an edge extraction unit configured to extract edge data from the diagnosis image data, a similar model searching unit configured to search contour model data based on the edge data, a position judgment unit and an image quality judgment unit configured to judge an imaging position and an image quality based on imaging information, respectively, and a diagnosis support information provision unit configured to provide diagnosis support information based on provider information.

Diagnosis support system using panoramic radiograph and diagnosis support program using panoramic radiograph

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Gifu, Japan

Akitoshi Katsumata