About this trial
The goal of this single centre pilot study is to explore whether 18F-fluoro-ethyl-tyrosine PET (FET-PET) yields comparable findings to 11C-methionine PET (Met-PET) for the localisation of pituitary tumours.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Participant is willing and able to give informed consent for participation in the study
Male or female, age 18 or above
Presence of pituitary adenoma suspected on the basis of clinical/biochemical and/or radiological findings
Previous 11C-Met-PET/CT
Disqualifiers
Inability to give informed consent
Pregnancy or suspected pregnancy
Inability to lie supine for 30-60 minutes
Patient body habitus above scanner dimensions
Trial design
Single group
Treatments tested in this trial
18F-Fluoro-ethyl-tyrosine (FET) PET
Diagnostic test18F-Fluoro-ethyl-tyrosine PET study of the pituitary
Treatment groups
Trial outcomes
Primary outcomes
Maximum Standardized Uptake Values (SUVmax) over pituitary tumour on each of 11C-methionine and 18F-fluoroethyltyrosine PET scans
Comparison of maximum Standardized Uptake Values (SUVmax) measured over pituitary tumours on each type of PET scan.
Secondary outcomes
Maximum Standardized Uptake Values (SUVmax) over normal pituitary gland and parasellar structures (e.g. cavernous sinuses) on each of 11C-methionine and 18F-fluoroethyltyrosine PET scans
Comparison of maximum Standardized Uptake Values (SUVmax) measured over normal pituitary gland and parasellar structures (e.g. cavernous sinuses) on each type of PET scan.
Sponsors and contacts
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University of Cambridge
Lead sponsor
Cambridge University Hospitals NHS Foundation Trust
Collaborator