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

Table 3 Distribution of the number and timing of scans routinely performed during adjuvant temozolomide (TMZ). Also shown are the standardised protocols implemented when there is suspected progression or new clinical symptoms

Number of scans during adjuvant period (not including post-cycle 6 TMZ)	Number of centres, n (%)
0	3 (10%)
1	7 (23%)
2	12 (39%)
3	4 (13%)
No standardised protocol	5 (16%)
Timing of first post-chemoradiotherapy scan	Number of centres, n (%)
4 weeks	12 (39%)
8 weeks	1 (3%)
12 weeks	10 (32%)
End of TMZ cycle 6 only	3 (10%)
No standardised protocol	5 (16%)
Protocol in suspected progression	Number of centres, n (%)
Additional imaging at 4–6 weeks	14 (45%)
Additional imaging over 4–12 weeks	8 (26%)
No standardised protocol	6 (19%)
No routine scans performed during adjuvant period	3 (10%)
Protocol if symptomatic during this period	Number of centres, n (%)
Initial CT, followed by MRI	11 (35%)
MRI	20 (65%)