An observational study in Amino-Acid Transport Disorder, Primary Hyperparathyroidism and Glioma, sponsored by Tianjin Medical University. Recruiting at 3 sites in China. Open to participants aged 18 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-08.
Sponsored by Tianjin Medical University · Observational
To evaluate the potential usefulness of 11C/18F-MET/FET positron emission tomography/ computed tomography (PET/CT) for the diagnosis of primary and metastatic lesions in various amino acid transporter system (AATS)-related disease patients.
Subjects with various AATS-related disease (Primary Hyperparathyroidism, Glioma, et al) patients underwent 11C/18F-MET/FET PET/CT either for an initial assessment or for recurrence detection. Lesions uptake was quantified by the maximum standard uptake value (SUVmax). The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of 11C/18F-MET/FET were calculated.
104 studies on the registry are indexed under Hyperparathyroidism, Primary; 23 are open to participants now.
This study's planned enrollment of 500 is above the median of 130 across 40 observational studies indexed under Hyperparathyroidism, Primary.
Browse Hyperparathyroidism, Primary studies →Tianjin Medical University is the lead sponsor of 49 studies on the registry; 30 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Each subject receive a single intravenous injection of 11C/18F-MET/FET, and undergo PET/CT imaging within the specificed time.
Diagnostic Test: 11C/18F-MET/FET
Each subject receive a single intravenous injection of 11C/18F-MET/FET, and undergo PET/CT imaging within the specificed time
Standardized uptake value (SUV)
Standardized uptake value (SUV) of AATS for each target lesion of subject or suspected primary tumor or/and metastasis.
Time frame: 30 days
Diagnostic efficacy
The sensitivity, specificity and accuracy of AATS PET/CT were calculated.
Time frame: 30 days
Plan to share: No
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Hyperparathyroidism, Primary →
Tianjin Medical University