What does the accuracy of dose calculations performed using a Treatment Planning System (TPS) primarily depend on?

The accuracy of dose calculations performed using a Treatment Planning System (TPS) primarily depends on the input data provided by the user. This input data includes critical factors such as patient anatomical information, tumor dimensions, constraints for organs at risk, and prescription dose specifics. When the user inputs accurate and precise information into the TPS, it can effectively model the patient’s unique anatomy and the intended radiation dose distribution, leading to more reliable and effective treatment plans.

If the input data contain errors or inaccuracies, it can significantly compromise the quality of the treatment plan, resulting in inadequate treatment or unnecessary damage to healthy tissues. Therefore, ensuring that the input information is correct and reflects the patient's current condition is essential for optimizing the accuracy of the dose calculations generated by the TPS.