|
|
|
| Dosimetric constants calculation of isotropic point source |
| Ma Li, Li Shijun |
| Naval Medical Research Institute, Shanghai 200433 |
|
|
|
|
Abstract Γδ, X and Γδ, Ka values of over 800 kinds of nuclides, which could transmit photons, were re-calculated in this study based on their decay schemes, the quality-energy absorption coefficients of air to photons and the newest data of W value.Our results were obviously different from those calculated before at about 2% deviation.We also calculated Γδ, H*(peripheral dose equivalent ratio constant) and Γδ, H (directional dose equivalent ratioconstant), respectively, by using the conversion coefficients given in ICRU-47 report.
|
|
Received: 18 April 1998
|
|
|
|
|
|
|
