Document Type : Technical Notes
Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
Clinical Oncology and Nuclear Medicine Department, Faculty of Medicine, Mansoura University, Egypt
Clinical Oncology &Nuclear Medicine Dept., Faculty of Medicine, Mansoura University, Mansoura, Egypt.
Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Introduction: Quality Assurance in the radiotherapy planning process is critical to determining radiotherapy accuracy and avoiding treatment errors. Thus, this study aimed to develop guidelines for the quality control periodic testing of radiation treatment planning systems TPS to check the performance and accuracy of the TPS.
Materials and methods: In this study, we used aProwess Panther treatment planning system TPS(version 5.51), Computed Tomography Simulator or CT- Simulator machine(Siemens model Somatom Confidence), Anthropomorphic Alderson-Rando phantom ART, and fabricated density phantom from CTDI head phantom by inserting plugs as human tissue-mimicking materials. The TPS features are hardware, transferred CT images (anatomical information), and critical software functions, but in our study, we were concerned with the anatomical information tests only in detail. According to the recommendations given in the International Atomic Energy Agency IAEA, Commissioning and Quality Assurance of Computerized Treatment Planning Systems for Radiation Treatment of Cancer Series No.430 publication, the anatomical information tests were CT transfer protocol, CT geometry- density check, and patient anatomy.
Results: All results of the radiation treatment planning systems (Prowess Panther RTPS) anatomical information tests were satisfactory and acceptable and ensured that the Prowess Panther RTPS version 5.51 workstation consistently met the required quality where In the CT scan transfer test, protocols of CT transfer to Prowess Panther TPS have not changed. In the CT geometry and density test, the relationship between the CT number and density and image geometry has not changed. And, In the patient anatomy test, The anatomical representation of the patient was not changed.
Conclusion: The guidelines for TPS CT image quality control testing proposed in this study will help to improve the safety and quality of cancer radiotherapy by preventing many incidents related to radiotherapy.