ESTRO 2024 - Abstract Book

S4933

Physics - Quality assurance and auditing

ESTRO 2024

6. Position of patient and treatment table 7. Technique (IMRT, VMAT…)

8. Nomenclature of fields 9. Isocenter coordinates 10. Fields associated to the same machine and with the same isocenter coordinates 11. Calculation algorithm 12. Collisions of the machine with table, accessories and/or patient 13. Dosimetric objectives and constraints 14. Appropriated dose distribution by plane and by treatment plan 15. Limit of UM of the machine is not exceeded 16. Placement of bolus (position, density, thickness and filed assignement) 17. Do not exist empty structures and BODY structure is type "external"

C. Context: script checks that the context is correct, that is, a patient and a selected plan to navigate through their information.

D. Final pop-up window to show the results of running the functions of the script

Results:

Figure 1 show results of automatic verification check-list of treatments:

1. 2.

There are not notes Is not a breast plan

3. There is not a previous CT and it is the first course of treatment 4. 3 radiopac markers are detected indicating (0,0,0) 5. Dose prescription is 6000 cGy in 30 fractions. The dose of the reference point is 200 cGy/fraction and matches with dose prescription 6. The structures “CouchInterior” and “CouchSurface” exist 7. Technique of plan is VMAT 8. Nomenclature of all fields is arc+number 9. Isocenter coordinates are (0, -3.5, -2.5) 10. All fields are associated to the same machine (TrueBeam SN2490) and to the same isocenter 11. Calculation algorithm is AcurousXB_16.1.0 12. The “CouchRotation” is zero so probability of collision is null approximately 13. From the DVH, the constrainst for spinal cord, parotids, cerebrum, esophagus, larynx and eyes are corrected. However, oral cavity and mandible overcome the limit of maximum dose. For oral cavity the maximum dose is 61.7 Gy, instead of 60 Gy. For mandible de maximum dose is 62.37 Gy instead of 60 Gy (figure 2) 14. Dose distribution by plane, by plan and by completed treatment should be manually verified 15. The UM limit is not overcome 16. There is not bolus 17. There is no empty structures and BODY exists and is “external” type