| Summary: | In the radiation installation such as radiologic installation, the safety of
radiation workers must be a concern. Every worker has to identify their workplace
radiation by specific information about radiation level, especially a secondary
radiation. The specific information about radiation can be visualized in Isodoses
Curve. The distribution and amount of X-Ray secondary radiation can be
analyzed. Making a computer program as a visual aid, can help to analyze isodose
curve easier.
In this research, a secondary dose rate radiation as a primary data has
been measured using water phantom as a scattering material at 90 degrees of
scattering angle and the X-Ray tube directed downwards to patient table
perpendicularly in 7 directed points around water phantom. In each direction, a
range of data collection points have been varied in 3 levels. Then, a collected data
will be processed by calculating the distribution of dose rate at each direction, and
then connects the same dose rate inter-direction, and finally calculates the dose
rate in current position. Based on these steps, a computer program will be created
based on Delphi language. Testing an isodose curve program is performing by
using a comparison data analysis of dose rate calculation using program and the
measurements.
The results of the test indicates that the difference of the dose rate values
between the program calculation and measurement ranging from 10.830-32.050 %
and mean difference approximately 17.334%. The results of the test from 5 times
showed that 3 results of the testing program calculations are in the interval of
measurement results, while 2 remaining results are outside of the interval
measurement results.
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