Clinical Research Directory

Inclusion Criteria: 1. Adult patients, at least 18 years of age 2. History of primary hyperparathyroidism as clinically confirmed by serum laboratory values of elevated calcium levels (\>10.2 mg/dl) and abnormal or inappropriately normal parathyroid hormone concentrations (normal range: 15 to 65 pg/ml). 3. Participants must be informed of the investigational nature of this study and provide written informed consent in accordance with institutional and federal guidelines prior to study-specific procedures. 4. Participants must have had prior SPECT/CT sestamibi parathyroid imaging within 6 months of this investigational study or planned SPECT/CT sestamibi parathyroid imaging scheduled prior to this investigational study. 5. Planned surgery within 6 months following this investigational study. Exclusion Criteria: 1. Females who are pregnant or breast feeding at the time of the PET/CT scan will not be eligible for this study; a urine pregnancy test will be performed in women of child-bearing potential ( as self-reported by menstrual history) before the injection of radiotracer. 2. Inability to tolerate imaging procedures, including but not limited to claustrophobia, inability to remain still during scanning, or any other condition that, in the judgment of the investigator or treating physician, would interfere with safe or adequate imaging. 3. Serious or unstable medical or psychological conditions that, in the opinion of the investigator would compromise the subject's safety or successful participation in the study.