Table 2 Results of questionnaire

Consensus protocol for target volume delineation

Not specifically assessed in questionnaire

Prior to SCOPE 1 trial there was wide variation in practice across the UK [14]

Use of prospective dose constraints

Not specifically assessed in questionnaire

In 88% of centres these are based on the corresponding SCOPE trial

3d conformal planning

29%

Now replaced by IMRT in SCOPE 2

Stomach filling protocol

12.5%

CBCT

66.7%

4D CT

42%

Use of type b algorithm

79.9%

pre NeoSCOPE^a

IMRT

75% [1]

[1]12.5% only using for upper 1/3 pre SCOPE 2