| Ji Gang,Guo Yong,Zhu Yunping,et al.Measurement and calculation of tissue air ratios of cobalt-60 gamma radiation in large field and depth[J].Chinese Journal of Radiological Medicine and Protection,1997,17(3):169-172 |
| Measurement and calculation of tissue air ratios of cobalt-60 gamma radiation in large field and depth |
| Received:November 20, 1996 Revised:February 20, 1997 |
| DOI： |
| KeyWords:Tissue air ratio Absorbed dose Phantom Depth Field 60Co γ-radiation |
| FundProject: |
| Author Name | Affiliation | | Ji Gang | Institute of Radiation Medicine, Beijing 100850, China | | Guo Yong | Institute of Radiation Medicine, Beijing 100850, China | | Zhu Yunping | Institute of Radiation Medicine, Beijing 100850, China | | 周振山 | Institute of Radiation Medicine, Beijing 100850, China | | 王兴功 | Institute of Radiation Medicine, Beijing 100850, China | | 杨甲祥 | Institute of Radiation Medicine, Beijing 100850, China |
|
| Hits: 5005 |
| Download times: 1993 |
| Abstract:: |
| Objective Tissue air ratio(TAR) is the one of useful concepts and methods in radiation dosimetry.There are no available TAR data for large field and depth irradiation and more research is needed to investigate the properties of TAR and other relative quantities under special irradiation. Methods Data of TAR for depth up to 70.0cm and rectangular field size up to 50.0cm×50.0cm have been obtained for 60Coγ-rays. Results For depth less than 30.0cm and field size less than 50.0cm×50.cm, the relative errors between the data by the experiment and by reference are less than 5 percent. Conclusions It is very important to measure TAR under the condition of irradiation in large depth and field sizes for the measurment and calculation of dose distribution in human body after a radiological accident. |
| HTML View Full Text View/Add Comment Download reader |
| Close |
|
|
|
