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KMID : 1164220030150010053
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Journal of Korean Society for Radiotherapeutic Technology
2003 Volume.15 No. 1 p.53 ~ p.60
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Reconstruction of body contour with digital camera image
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Kwon Kyung-Tae
Song Heung-Kwon
Park Cheol-Su
Kim Jeong-Man
Kang Tae-Young
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Abstract
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Purpose : It is essential to have the correct body contour information for the calculation of dose distribution. The role of CT images in the radiation oncology field has been increased. But there still exists a method to use cast or lead wire for the body contour drawing. This traditional method has drawbacks such as in accurate and time consuming procedure. This study has been designed to overcome this problem.
Materials and Methods : A digital camera is attached to a pole which stands on the opposite side of the gantry. Positional information was acquired from an image of the phantom which is specially designed for this study and located on the isocenter level of the simulator Laser line on the patients skin or on the phantom surface was digitized and reconstructed as the contour. Verification of usefulness this technique has been done with various shape of phantoms and a patients chest
Results and Conclusions : Contours from the traditional method with the cast or lead wire and the digital image method showed good agreement within experimetal error range. This technique showed more efficiente in time and convenience. For irregular shaped contour, like H&N region, special care are needed. The results suggest that more study is needed. To use of the another photogrammatory techinique with two camera system may be better for the actual clinical application
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