A. Head CT - TRUE: Initially this would be helpful to exclude an intracranial hemorrhage or mass lesion.
2. 131 I-Metaiodobenzylguanidine (MIBG) - TRUE: This agent is an analog of norepinephrine and is taken up by tissues with adrenergic innervation. This scan is sometimes called adrenal meduallary imaging.
C. 111 In-Pentetreotide (Octreotide) - TRUE: This agent targets tumors with somatostatin receptors, aka neuroendocrine tumors such as pheochromocytomas, carcinoid, and APUDomas. This scan is a helpful follow-up scan to evaluate for metastatic or multifocal neuroendocrine tumors.
D. All of the Above - TRUE