Learning objectives
In the radiology room,
operators performing tests wear protective clothing while working to prevent radiation exposure.
Operator exposure and device load are problematic even when obtaining scattered radiation distributions,
and radiation safety must be managed.
To resolve these problems,
we developed a method called jungle gym (JG) to easily determine the scattering distribution in the room (Fig.1).
Scattered radiation distributions were prepared from measurement data,
visually displayed,
and the distributions from different imaging techniques were compared.
The obtained radiation distributions were then used to educate...
Background
Operator exposure to radiation while working in the radiology room must be managed,
so it is important to determine the scattering distribution [1][2][3].
However,
operator exposure to the measurement device cannot be completely avoided.
To mitigate this problem,
we proposed a novel JG method herein.
The JG method can be used to easily obtain 3-dimensional scattered radiation distributions,
and we show the usefulness of measuring the distribution with various tests.
An individual dosimeter capable of low-dose measurement with negligible directional dependence was used for measuring...
Findings and procedure details
In the developed JG method,
paper pipes with negligible X-ray absorption were arranged in the room and individual detectors were attached at each point to obtain data.
The pipes were placed at 50 cm intervals at a height of 50,
100,
and 150 cm from the floor,
according to the target room size.
The used dosimeter elements were optically stimulated luminescence (OSL) dosimeters,
and the calibration constant of the measurement energy was calculated for each element and evaluated in air kerma.
The scattered radiation distribution...
Conclusion
The JG method is superior for collecting scattered radiation distribution data from medical devices,
thereby enabling visual evaluation of the distribution without exposing the operator to radiation or placing a high load on the device.
In addition,
the collected data was shown to be usable for educating operators on radiation safety.
Personal information
Shoichi Suzuki,
RT.,Ph.D.
Visiting Professor;
Faculty of Radiological Technology,
School of Health Sciences,
Fujita Health University,
Aichi Japan
Supervisor;
Department of Radiology,
Daido Hospital,
Aichi Japan
Email:
[email protected],
[email protected]
References
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The interdependence of staff and patient doses in interventional radiology.
BJR,
1997;70:498-503.
[2] International Commission on Radiological Protection Publication 85.
Avoidance of radiation injuries from medical interventional procedures.
Ann.
ICRP 2000;30(2):64.
[3] International Commission on Radiological Protection Publication 139.
Occupational Radiological Protection in Interventional Procedures.
Ann.
ICRP 2018;47(2):72,83.
[4] Okazaki T.
et al.
Applicability of Practical Calibration of a Small-type OSL dosimeter for Measuring the Exposure Doses Effected by Scattered and Penetrating X-rays.
Progress in Nuclear Science and Technology,
2016.
[5] Takegami...