How can TPS computed dose be verified?

Verifying the computed dose from a Treatment Planning System (TPS) is crucial to ensure that the planned treatment will deliver the intended dose accurately and consistently. Utilizing all the methods listed is essential in establishing confidence in the accuracy of the TPS calculations.

Manual dose calculations involve performing calculations for specific cases by hand, using standardized algorithms and mathematical equations based on the physical principles governing radiation interaction with tissue. This process can help confirm the accuracy of the TPS output through a second independent calculation.

In vivo dosimetry involves measuring the dose received by the patient during treatment using specialized detectors placed directly on or within the patient. This real-time monitoring ensures that the actual dose delivered remains in alignment with what was planned, and any discrepancies can be immediately addressed.

Actual measurements for specific cases refer to performing measurements in a clinical or phantom setting to directly evaluate the dose distribution as predicted by the TPS. This could include using ion chambers, film dosimetry, or other detector systems to capture dose information under controlled conditions, allowing for a comparison with TPS calculations.

The comprehensive approach of employing all these methods provides a robust verification framework, ensuring both the accuracy and safety of radiation therapy treatment. Each method contributes valuable information to confirm the validity of the TPS-computed doses, thereby enhancing patient care