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Development of a Web-Based Program for Cross- Calibration and Record Management of Radiation Measuring Equipment
Prog. Med. Phys. 2019;30(2):59-63
Published online June 30, 2019
© 2019 Korean Society of Medical Physics.

So Hyun Park1, Rena Lee2, Kyubo Kim2, Sohyun Ahn3, Sangwook Lim4, Samju Cho5

1Department of Radiation Oncology, Jeju National University Hospital, Jeju University College of Medicine, Jeju, 2Department of Radiation Oncology, Ewha Womans University School of Medicine, Seoul, 3Department of Radiation Oncology, Kangwon National University Hospital, Kangwon University College of Medicine, Chuncheon, 4Department of Radiation Oncology, Kosin University College of Medicine, Busan, 5Department of Radiation Oncology, Ewha Womans University Medical Center, Ewha Womans University School of Medicine, Seoul, Korea
Correspondence to: Samju Cho (chosamju@gmail.com)
Tel: 82-2-2650-5337
Fax: 82-2-2654-0363
Received April 17, 2019; Revised June 6, 2019; Accepted June 21, 2019.
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: To manage radiation measurement equipment, a web-based management program has been developed in this study. 
Materials and Methods: This program is based on a web service and Java Server Pages (JSP) and employs compatibility and accessibility. 
Results: The first step in the workflow has been designed to create accounts for each user or organization and to log in. The program consists of two parts: fields for listed instruments, and measurement information. The instruments for measuring radiation listed in this program are as follows: ionization chambers, survey meters, thermometers, barometers, electrometers, and phantoms. Instrument properties can be put in the recording fields and browsing for associated instruments can be performed. The main part of the program is the cross-calibration for each ion chamber. For instance, the ionization chamber to be used as a relative dosimeter can be registered by cross-calibration data with a reference chamber calibrated by an accredited laboratory. This program supports methods using the central axis transfer theory for cross-calibration for the ionization chambers. The reference and field ionization chambers were placed in a solid water phantom along the beam central axis at two different depths, and then the positions were switched. Each measured value was used for calculating the cross-calibration factor. 
Conclusions: Because m any instruments are used and managed i n radiation oncology departments, systematic, traceable recording is very important. The web-based program developed in this study is expected to be used effectively in the maintenance of radiation measurement instruments.
Keywords : Radiation therapy, Web-based program, Record management, Cross calibration


June 2019, 30 (2)