Q-1. PET stands for (NEET Based)
a) Positive electron tomography
b) Proton-electron therapy
c) Positron emission tomography
d) Photon emitting tomography
Answer: Positron emission tomography
Explanation:
Positron emission tomography (PET) is a radio-nucleotide scan which uses FDG (2-Fluoro-deoxy-glucose) tracer for anatomical and functional assessment of tissue. FDG is analogue of glucose. FDG-PET scan shows increased uptake and metabolism by malignant cells.
It can be used to detect distance metastasis, tumor recurrence after surgery or radio-therapy, treatment response and staging of various tumors.
It is also helpful in pre-operative localization of temporal lobe lesion in refractory epilepsy.
Important points:
Anatomical assessment by PET is inferior to CT with low spatial resolution.