F-18 FDOPA PET/CT Versus I-123 MIBG Scintigraphy With SPECT/CT for the Diagnosis of Pheochromocytoma and Paraganglioma

Inclusion Criteria

• •1. suspected PPGL based on a biochemical screening, including 24-hour urinary total normetanephrine, metanephrine, norepinephrine, and epinephrine, along with plasma free concentrations of normetanephrine and metanephrine conducted within the past 6 months
• •2. an adrenal incidentaloma, suggestive of PPGL on anatomical imaging (CT or MRI) performed within the past 6 months
• •3. characteristic symptoms and signs of PPGL
• •4. suspected of recurrence or metastases of known PPGL.