ESTRO 2024 - Abstract Book

S4765

Physics - Quality assurance and auditing

ESTRO 2024

Table 1: Overview of patient cases and dose prescription decisions

Patient 1: Abdomen

Patient 2: Lung

Patient 3: Lung

Patient 4: Lung

Previous treatment

5 Gy x 5

3 Gy x 10

2 Gy x 20

2 Gy x 33

Deformable

dose

Yes

Yes

Yes

No

mapping OK?

Intended

ReRT

5 Gy x 5

5 Gy x 5

3 Gy x 10

5 Gy x 5

prescription

Treated ReRT dose

4 Gy x 5

4 Gy x 5

4 Gy x 5

4 Gy x 5

Physician preference after DDM

As treated

As treated

As intended

/

High dose overlap in muscle/bone. Dependent on other clinical factors, 3 Gy x 10 may be considered /

High dose located in aorta

High dose close to bronchi

Reason/Comment

DDA QA time

50 min

60 min

46 min

55 min