Abstract:
This study calculated the entrance skin dose (ESD) and effective
dose (ED) in simulator during the planning of radiotherapy in three
organs, head, chest, and pelvis. the simulator is an instrument that
simulate all the movement of radiotherapy machine.
In the result of the study, we found that the ESD in simulator at the
three organs were: head is 9.15 mGy, chest is 13.19mGy, pelvis is
14.26mGy , and ED also in the three organs were: 0.08mSv,
2.36mSv, 2.27 mSv respectively . We also estimated in this study
the ESD to the sensitive organs around the pelvis, chest and head
and we found that the average dose to some of these organ like lense
of the eye, ovaries and testes were 3.5mGy, 2.8mGy, 9.6mGy
respectively . we have seen some variation at the dose deliver to
each organ and we think it came from the following purposes:
i. the variation of technical factor to each patient.
ii. The availability of patient history like x-ray images
and so on.
iii.
The experience of technologist and availability of
medical doctor.