Imaging of pheochromocytoma in 2 dogs using p-[18F]fluorobenzylguanidine

Clifford R. Berry, Timothy R. DeGrado, Felicia Nutter, Pradeep K. Garg, Edward B. Breitschwerdt, Kathy Spaulding, Kevin D. Concannon, Michael R. Zalutsky, R. Edward Coleman

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


p-[18F]Fluorobenzylguanidine ([18F]PFBG) is a norepinephrine analog that has been developed as a positron emission tomography (PET) imaging radiopharmaceutical. Myocardial sympathetic innervation, neuroendocrine structures, and tumors can be noninvasively imaged with [18F]PFBG. In this study, the uptake characteristics of [18F]PFBG were investigated in 2 dogs with a spontaneous pheochromocytoma. The extent of the pheochromocytoma was well documented in both dogs on the PET study. The standardized uptake values within the pheochroraocytomas were greater than 25 by 10 min, and were 37 and 50 by 45 min in each dog. A third dog that was suspected to have an adrenal mass was also studied. In this dog, the [18F]PFBG study was normal. Surgical exploration and adrenal biopsy confirmed the [18F]PFBG imaging findings in both dogs. In each dog, there was rapid blood-pool clearance (within 10 min after intravenous administration of the [18F]PFBG), with high uptake specific within the myocardium and adrenal medulla. The results indicate that [18F]PFBG may be useful for imaging canine pheochromocytomas and aid in differentiating adrenal masses.

Original languageEnglish (US)
Pages (from-to)183-186
Number of pages4
JournalVeterinary Radiology and Ultrasound
Issue number2
StatePublished - Mar 2002


  • Canine
  • Pheochromocytoma
  • p-[F]fluorobenzylguanidine

ASJC Scopus subject areas

  • veterinary(all)


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