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Table 2 The rationale given for performing the early post-operative MRI (EPMRI) and pre-radiotherapy MRI (PRMRI)

From: Glioblastoma post-operative imaging in neuro-oncology: current UK practice (GIN CUP study)

Early post-operative MRI Neuroradiologist Neurosurgeon Neuro-oncologist Total
  Purpose
    Establish amount of residual tumour 27 29 27 83 (90%)
    Baseline to allow later assessment of treatment response 25 24 22 71 (77%)
    Plan radiotherapy 12 14 21 47 (51%)
    Differentiate between residual tumour and haemorrhage 16 13 14 43 (47%)
    Differentiate between residual tumour and post-operative enhancement 15 11 14 40 (43%)
    Differentiate between residual tumour and post-operative ischaemia 14 13 10 37 (40%)
    Establish amount of residual tumour suitable for further resection 12 14 10 36 (39%)
p = 0.59
  Speciality specific
    EPMRI used to assess treatment response on later MRI 22 (71%)  
    EPMRI used to decide on further debulking surgery 11 (35%)  
    EPMRI used in the management of chemoradiotherapy 21 (70%)  
Pre-radiotherapy MRI
  Purpose
    Plan radiotherapy 9 6 10 25 (83%)
    Baseline to allow later assessment of treatment response 7 2 3 12 (40%)
    Establish amount of residual tumour 4 2 2 8 (27%)
    Establish amount of residual tumour suitable for further resection 1 0 1 2 (7%)
p = 0.74