PT Ion Merah Putih conveyed the intent and purpose of the consultation request to DP2FRZR: a desire to provide independent radiotherapy dosimetry audit services in Indonesia. PT Ion Merah Putih is currently partnered with GEV Co., Ltd. (Korea), which provides irradiation services, personnel dosimeter readings, training, and sales. PT Ion Merah Putih stated that Radiophotoluminescence (RPL) was originally developed as a personnel dosimeter and can now be used for remote dosimetry audits at irradiators and radiotherapy facilities. The discussion revealed that GEV Co., Ltd. (Korea) has not yet provided radiotherapy dosimetry audit services using RPL dosimetry. Instead, it is a distributor of personnel dosimeters in several hospitals in Korea.

During the discussion, BAPETEN emphasized that currently, Government Regulation Number 45 of 2023 does not use the term "dosimetry audit" but rather "calibration" as part of external quality control for radiotherapy facilities. The current implementation of external quality control for radiotherapy, in accordance with BAPETEN Regulation Number 1 of 2006, uses the nomenclature "calibration" of the output of therapeutic radiation sources. Current practice uses an on-site method using an ion chamber and is conducted by a BAPETEN-appointed dosimetry laboratory. Therefore, remote dosimetry audits using RPL dosimetry are not currently covered by BAPETEN regulations. Provisions regarding on-site dosimetry audits will be included in the revised BAPETEN Regulation Number 1 of 2006, but the possibility of adding remote methods is not ruled out if there are suggestions for their addition to the regulatory content.

The RPL itself has the advantage of being readable. The small dimensions of the RPL are considered very suitable for in vivo dosimetry, but its uncertainty is still slightly greater than that of an ion chamber. Regarding the current implementation of dosimetry audits, the IAEA states that the use of ion chambers is the gold standard in radiotherapy due to their traceability and low uncertainty.

Discussions between BAPETEN and PT Ion Merah Putih resulted in several points, including the need for PT Ion Merah Putih to determine the services it will provide. For RPL reading services, PT Ion Merah Putih must submit an application to BAPETEN to designate an external dosimetry laboratory, meeting the requirements of BAPETEN Regulation Number 3 of 2021. If PT Ion Merah Putih wishes to provide dosimetry audit services, it will need to comply with current regulations. Meanwhile, if only importing and transferring, you can apply for an import and transfer permit from BAPETEN. Furthermore, to provide TLD, RPL, or other evaluation services, the laboratory and all processes (reading, analysis, reporting) must be located in Indonesia and carried out there. (DP2FRZR/Asiah Hasanah/BHKK/OR/Translator: GP)