Intermediate
Technical
IVT
functional imaging
Imaging techniques that assess metabolic activity and receptor expression rather than purely anatomical structures in endocrine tumors.
Full Definition
Functional imaging encompasses various nuclear medicine and molecular imaging techniques used to evaluate endocrine tumors based on their biological characteristics rather than size alone. Common modalities include somatostatin receptor imaging with gallium-68 labeled peptides, MIBG scintigraphy for catecholamine-producing tumors, and FDG-PET for aggressive or dedifferentiated lesions. These techniques are essential for staging, treatment selection, and monitoring response in neuroendocrine neoplasms.
Usage
Usage note: Distinguish from anatomical imaging when discussing diagnostic approaches.
In Context
- "Functional imaging with gallium-68 DOTATATE revealed extensive somatostatin receptor-positive disease." — Radiology report
- "The discordance between anatomical and functional imaging suggested tumor dedifferentiation." — Multidisciplinary team discussion
Also known as
molecular imaging
metabolic imaging
receptor imaging
Contrasted with
anatomical imaging
structural imaging
Don't confuse with
morphological imaging
contrast imaging