Paper Abstract and Keywords |
Presentation |
2010-11-19 13:55
Measurement of rhe position and orientation of the humerus using a combination of fluoroscopic image and 2D-3D registration Noriaki Nagasawa, Toyohiko Hayashi (Niigata Univ.), Hiroshi Tanaka, Masahiko Komai, Hiroki Ninomiya (Nobuhara Hospital), Yoshinobu Maeda, Tetsuya Watanabe (Niigata Univ.), Katsuya Nobuhara (Nobuhara Hospital) MBE2010-49 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Video Fluoroscopy (VF) is widely used in clinic for recording in-vivo shoulder joint motions in two dimensions. In order to achieve VF-based 3-D measurement, a method using a combination of fluoroscopic image and a 3-D model of the bone has been developed by using a 2D/3D registration technique. Since its measurement accuracy depends on the bone shape and other measurement conditions, the measurement accuracy of the humeral position and orientation also has to be validated before measurement. To achieve this, we developed an empirical system using a humeral bone model, a bone-fixation equipment with high reproducibility and an X-ray projection calibration frame. Using this system, we validated the accuracy in the three different humeral orientations within the scapula plane with an elevation angle of 30[deg], 60[deg] and 90[deg]. The accuracy in the orientation was verified to be less than 1[deg] on average in adduction/abduction and horizontal adduction/abduction, and to be less than 4[deg] on average in internal and external rotation. The accuracy in the position was verified to be less than 1[mm], 2[mm] and 5[mm] on average in the supero-inferior, medio-lateral and antero-posterior positions, respectively. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
humerus / fluoroscopic image / 2D-3D registration / accuracy verification / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 294, MBE2010-49, pp. 75-80, Nov. 2010. |
Paper # |
MBE2010-49 |
Date of Issue |
2010-11-11 (MBE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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MBE2010-49 |
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