ESTRO 2024 - Abstract Book

S5969

RTT - Treatment planning, OAR and target definitions

ESTRO 2024

This was calculated for all operators and CBCTs. The professional group for which the mean distance from the average volume was the lowest was chosen as the reference group (two-sided Student's t-test).

Afterwards, we computed the deviation between the remaining operator’s and ETHOS®’ volumes with the reference average volume. We compared the mean of these deviation values between groups (two-sided Student's t-test).

Results:

The interprofessional delineation error values are reported in Table 1.

Direction

Expert ROs

RTTs

Non-expert ROs

Left

1.28 +/- 1.17

4.56 +/- 8.94

1.35 +/-1.64

Right

1.09 +/- 1.01

2.22 +/- 1.58

1.17 +/- 0.92

Anterior

1.26 +/- 1.26

2.85 +/- 2.81

1.76 +/-1 .71

Posterior

1.64 +/- 1.63

3.06 +/- 2.30

2.65 +/- 2.60

Superior

3.23 +/- 2.82

4.28 +/- 2.78

3.67 +/- 2.90

Inferior

2.93 +/- 2.30

4.78 +/- 4.73

4.42 +/- 4.83

Table 1: Interprofessional delineation variability values in all directions.