2017 Fiscal Year Final Research Report
development of Intensity modulation radiation therapy technique for esophageal cancer
Project/Area Number |
26861002
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Radiation science
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Research Institution | Hiroshima University |
Principal Investigator |
Doi Yoshiko 広島大学, 医歯薬保健学研究科(医), 特任助教 (50723029)
|
Project Period (FY) |
2014-04-01 – 2018-03-31
|
Keywords | 早期食道癌 / 強度変調放射線治療 |
Outline of Final Research Achievements |
Cardiac toxicity after definitive chemoradiotherapy for esophageal cancer is a critical issue. To develope of the safe of intensity modulation radiation therapy (IMRT) technique for esophageal cancer, we studied the esophageal motion during free-breathing and breath-hold. During free-breathing, esophageal motion in the superior-inferior direction in all sites was large, compared to the other directions, and amplitudes showed substantial inter-individual variability. The breath-hold technique is feasible for minimizing esophageal displacement during radiotherapy. And, we studied the feasibility of IMRT for esophageal cancer.IMRT for thoracic esophageal cancer achieved better dose conformity for PTV and significant high irradiated dose reduction for heart and liver compared with conventional 3D-CRT with suppressing the low irradiated area to the lung within tolerance level.
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Free Research Field |
放射線治療
|