68Ga-Citrate PET of Healthy Volunteers

68Ga-Citrate Positron Emission Tomography (PET) of Healthy Volunteers

This study investigates whole-body distribution kinetics of intravenously administered Gallium-69 (68Ga) citrate by positron emission tomography (PET)/computed tomography (CT). Thereafter, radiation dosimetry of 68Ga-citrate PET/CT will be determined.

Six healthy male volunteers are recruited in this study. Gallium-68 citrate radiopharmaceutical is intravenously injected as a bolus and whole-body distribution kinetics are studied by dynamic whole-body positron emission tomography/computed tomography. During imaging, serial venous blood samples are drawn, plasma is separated and radioactivity is measured by gamma counter. Immediately after imaging session, urine is voided and radioactivity is measured by gamma counting. As a final point, radiation dosimetry due to single Gallium-68 citrate injection is determined.

Inclusion Criteria:

• healthy 18-100 year-old men

Exclusion Criteria:

• ongoing infection/inflammation proven by blood or other tests