講演抄録/キーワード |
講演名 |
2009-01-20 14:30
[ポスター講演]Automatic joint space measurement on the hand radiographs for rheumatoid arthritis ○Jeongjoo Song・June Goo Lee・Sang Ho Lee・Yun Sub Jung・Young Jae Kim(Seoul National Univ.)・Kwang Gi Kim(National Cancer Center)・Sungjun Kim(Yonsei Univ.)・Jong Hyo Kim(Seoul National Univ.) MI2008-148 |
抄録 |
(和) |
The measurement of joint distance is an important task in the quantification of joint space narrowing of rheumatoid arthritis. In this paper, we attempted curvature based algorithm to find joint distance from phalangeal region of interest (ROI). Firstly, the input data was extracted phalangeal region from both hand bone images. We segmented each finger bone out of background using k-means clustering. The center information which is half point of binary image was used to apply polynomial curve fit algorithm. Pixel average was applied on normal direction of center curve to overcome the fluctuation by variation of pixel value on the bone region. In other to find minima of the average profile, we proposed the curvature index which is angle difference among reference position of center curve and forward, backward position on the profile. The curvature minima were identified the distal inter-phalangeal joint (DIP) and proximal inter-phalangeal joint (PIP) on the center index profile. As a result, the distance of DIP and PIP were discriminated. |
(英) |
The measurement of joint distance is an important task in the quantification of joint space narrowing of rheumatoid arthritis. In this paper, we attempted curvature based algorithm to find joint distance from phalangeal region of interest (ROI). Firstly, the input data was extracted phalangeal region from both hand bone images. We segmented each finger bone out of background using k-means clustering. The center information which is half point of binary image was used to apply polynomial curve fit algorithm. Pixel average was applied on normal direction of center curve to overcome the fluctuation by variation of pixel value on the bone region. In other to find minima of the average profile, we proposed the curvature index which is angle difference among reference position of center curve and forward, backward position on the profile. The curvature minima were identified the distal inter-phalangeal joint (DIP) and proximal inter-phalangeal joint (PIP) on the center index profile. As a result, the distance of DIP and PIP were discriminated. |
キーワード |
(和) |
Hand Radiograph / Joint space / Rhumatoid Arthritis / / / / / |
(英) |
Hand Radiograph / Joint space / Rhumatoid Arthritis / / / / / |
文献情報 |
信学技報, vol. 108, no. 385, MI2008-148, pp. 407-410, 2009年1月. |
資料番号 |
MI2008-148 |
発行日 |
2009-01-12 (MI) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MI2008-148 |