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KMID : 1164220140260010115
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Journal of Korean Society for Radiotherapeutic Technology
2014 Volume.26 No. 1 p.115 ~ p.126
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Analysis of change of internal organ in the Inter-and Intrafraction using MVCT
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Jung Won-Seok
Kim Joo-Ho
Kim Young-Jae
Shin Ryung-Mi
Oh Jeong-Hun
Jeong Geon-A
Jo Jun-Young
Kim Gi-Chul
Choi Tae-Gu
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Abstract
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Purpose : Depending on a variety of therapeutic areas using MVCT(Megavoltage computed tomography) intra-and interfraction is to evaluate changes in patient position.
Materials and Methods : In this study, head and neck, thorax, liver, and prostate tumor patients, 48 people with a full course of treatment for patients with various MVCT scan was performed. Average 60 per patient MVCT images were acquired and analyzed.
Results : Interfraction error thorax and abdomen, and pelvis in the longitudinal difference was more than 3 mm. Intrafraction to see a change after the end of treatment MVCT taken, and the results confirmed Intrafraction 2 mm in motion around the longitudinal difference. In addition, due to changes in the movement before and after treatment, Inter-and Intrafraction difference was found.
Conclusion : In the present study, the Head and Neck, Thorax, liver, prostate cancer in patients with inter-and intrafraction changes and target the appropriate fixtures to complete the outline of the margin would be helpful is considered.
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KEYWORD
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MVCT, inter-and intrafraction
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