PT  - JOURNAL ARTICLE
AU  - Hyun O, Joo
AU  - Lodge, Martin A.
AU  - Jagannath, Sanjay
AU  - Buscaglia, Jonathan M.
AU  - Olagbemiro, Yetunde
AU  - Wahl, Richard L.
TI  - An Exocrine Pancreatic Stress Test with <sup>11</sup>C-Acetate PET and Secretin Stimulation
AID  - 10.2967/jnumed.113.135681
DP  - 2014 Jul 01
TA  - Journal of Nuclear Medicine
PG  - 1128--1131
VI  - 55
IP  - 7
4099  - http://jnm.snmjournals.org/content/55/7/1128.short
4100  - http://jnm.snmjournals.org/content/55/7/1128.full
SO  - J Nucl Med2014 Jul 01; 55
AB  - The purpose of this study was to develop a noninvasive imaging test of pancreatic exocrine function. Methods: In this pilot study, 5 healthy volunteers underwent two 60-min dynamic 11C-acetate PET studies, one before and one after intravenous secretin administration. Kinetic analysis of the pancreas was performed using a 1-compartment model and an image-derived input function. From summed images, standardized uptake values were measured from the pancreas and the liver, and the pancreas-to-liver ratio was computed. Results: The baseline k1 and k2 data for all 5 volunteers were consistent. After secretin stimulation, the k1 and k2 significantly increased (paired t test P = 0.046 and P = 0.023, respectively). In the summed PET images, the pancreas-to-liver ratio decreased (P = 0.037). Increased 11C-acetate activity was observed in the duodenum after secretin stimulation consistent with secretin-induced secretion. Conclusion: 11C-acetate PET studies with secretin stimulation show potential as a noninvasive method for assessing pancreatic exocrine function.