| WANG Gao-ren,MIAO Xu-dong,et al.Effect of organ depth ware on absorbed dose by respiration of patient in radiotherapy[J].Chinese Journal of Radiological Medicine and Protection,2007,27(1):78-79 |
| Effect of organ depth ware on absorbed dose by respiration of patient in radiotherapy |
| Received:May 09, 2006 |
| DOI： |
| KeyWords:Radiotherapy Absorbed dose Organ depth waving factor Waterphantom |
| FundProject: |
| Author Name | Affiliation | | WANG Gao-ren | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China | | MIAO Xu-dong | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China | | 缪旭东 | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China | | 张良安 | 中国医学科学院中国协和医科大学放射医学研究所 | | 张金波 | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China | | 汤娅红 | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China | | 徐澄 | Department of Radiation Oncology, Nantong No. 1 People's Hospital, Nantong 226001, China |
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| Abstract:: |
| Objective To study how the absorbed dose was affected by the wave of organ depth caused by respiration of patient in radiotherapy. Methods With the change of radiation energy, organ depth waving range, respiration frequency and measuring depth, the organ depth waving factor (Fdw) was determined with the waterphantom which could simulate the actual organ wave of patient in radiotherapy. Results The actual absorbed dose was really affected by the organ depth wave of patient in radiotherapy. The Fdw value decreased with the increase of radiation energy, depth waving range and respiration frequency, which means that the higher these three parameters, the more the absorbed dose was affected. But the average depth measured had no effect on the Fdw value. Conclusions The absorbed dose to organ or tumor should be modified with the measured Fdw based on the patient's respiration frequency, radiation energy and actual organ depth waving range, so as to improve the effect of radiotherapy. |
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