| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Outline of Final Research Achievements |
Children are known to be susceptible to radiation-associated health effects. Recent public concern is focued on the repeated CT examination, especially to children. In this study, the effect of repeated exposure was compared to acute exposure in both infant (1 week of age) and adult (7 week of age) mice. It turned out that the effect of radiation on lifespan shortening and T-cell lymphoma development in infant mice was dependent on the interval of each exposure: the daily exposure was more effective than weekly exposure and acute exposure. On the other hand, the effect on adult mice showed no dependence on exposure regimen.
The local survey for childhood CT exposure was conducted. As a result, CTDI and DLP were almost comparble to international DRL. The numerical values of various CT examinations after nationa-wide survey were adopted as Japan national DRL.
|
