2016 Fiscal Year Final Research Report
A fundamental research for hybrid tracking radiotherapy without invasive metal marker
| Project/Area Number |
25861055
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Radiation science
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| Research Institution | Hirosaki University |
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Principal Investigator |
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| Research Collaborator |
TAKAI Yoshihiro 弘前大学, 大学院医学研究科, 教授
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 放射線治療 |
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| Outline of Final Research Achievements |
In this study, the motion of internal markers, external markers and others were measured by biplane fluoroscopic images at 0, 10 and 20 minutes. We found difficulty for prediction of tumor motion by external marker motion alone. The motion of external markers, diaphragms and ribs were delayed than that of internal markers in a moment, so they cannot be used as trigger signal. However, when they were combined, the respiratory phase can be grasped more accurately. As time passed, body sinking due to degree of tension of the muscles and body rotation due to crosswise difference of extended arm position were observed. Both DRR and fluoroscopic image were nearly matched, but not completely due to scan image attributes.
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| Free Research Field |
放射線治療
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