Implementing the Canadian Partnership for Quality Radiotherapy (CPQR) guidelines in a radiotherapy department

Abstract

Aim To develop and implement a LINAC quality control program based on the CPQR guidelines. Following a review of the LINAC quality control program, actions were taken to update the program based on a single set of guidelines, where previously it had been based on a combination of IPEM and AAPM guidelines. By following one set of up to date guidelines, it is hoped that the machine QC can be streamlined and optimised to create a more efficient program and to also assure that the most up to date tests are being used. CPQR guidelines are based around a daily, monthly and annual testing cycle. Guidelines for LINAC, MV and kV imaging tests were followed, with any current tests which conformed to the new guidelines being incorporated or adapted as appropriate. Electronic record sheets templates were created and validated with the view to be paper lite, with a possibility of paperless. Where possible, QC aids such as EPID and chamber arrays were introduced to both reduce costs and increase efficiency. A DICOM database was created and in-house software was developed for DICOM analysis. The new QC program has been clinical for 6 months, with all tests being covered in this time. Some tests frequencies were increased from monthly to weekly. Approximate time spent in QC for weekly, monthly and annual is 40 mins, 4 h and 1.5 days respectively. Costs have been reduced with the EPID analyses replacing film. The program is currently undergoing a review to update relevant tests.