Table 5.

Patients with brain tumor which were examined initially when a primary brain tumor was suspected on MRI and, afterward, when a recurrent or residual tumor was suspected after therapy

#	Pat. no.	Age [years]	Gender (F = female M = male)	Diagnosis	WHO grade	Localization	Number of MET-PET scans [n]	Diagnosis confirmed by
1	11	21	F	Astrocytoma	II	Left temporal	2	4,1
2	12	21	F	Astrocytoma	II	Left precentral	2	2,1
3	15	10	M	Pleomorphic xanthoastrocytoma	II	Left temporal	5	1,1
4	21	19	F	Oligoastrocytoma	III	Left temporo-parietal	2	4,1

Diagnosis was confirmed (1) histologically after the MET-PET examination by surgery or stereotactic biopsy, (2) clinically, (3) by follow-up MRI or CT scans, (4) or clinically in combination with follow-up imaging results