| Project/Area Number |
25670800
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Pathobiological dentistry/Dental radiology
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| Research Institution | Matsumoto Dental University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MUNEYASU Mituji 関西大学, システム理工学, 教授 (30229942)
ASANO Akira 関西大学, 総合情報部, 教授 (60243987)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | パノラマX線画像 / 頸部石灰化病変 / G型フーリエ記述子 / 頚動脈 / 頚動脈石灰化 / 頸部石灰化 / 特徴量 / 自動検出の構築 / 輝度勾配 / 動脈硬化 |
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| Outline of Final Research Achievements |
Calcification in the carotid artery detected by the panoramic radiography is related to the progression of arterial sclerosis in the elderly and, thus, construction of an automatic detection system of calcification in the carotid artery was attempted using G-type Fourier descriptor because it can be difficult for a dentist to judge presence or absence of calcification from panoramic radiographs. The panoramic radiographs of 323 cases suspected of calcification in the carotid artery were processed by the method which deleted erroneous detection using G-type Fourier descriptor depicting the outline of the calcified area. The calcified areas were detected in 251 of 323 cases with calcification in the neck. The analysis using G-type Fourier descriptor was shown to be effective to detect calcified areas at a high precision.
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