Nuclear medicine for diagnosing oncological diseases Flashcards Preview

Radiology > Nuclear medicine for diagnosing oncological diseases > Flashcards

Flashcards in Nuclear medicine for diagnosing oncological diseases Deck (4)
Loading flashcards...
1
Q

Nuclear medicine for brai ntumors

A

FDG and PET scans. Increased uptake is proportional to malignancy.
Can be false positives for inflammation.

Low grade tumors may be hypo metabolic. and high grades are hyper.

2
Q

Most common nuclear scan for oncology

A

FDG-PET whole body scan.
Especially FDG PET-CT

Majority of malignant tumors will be hyper active.

False positives include inflammatory processes.

Postoperative and postirradiation inflammation

Urinary accumulation and excretion

Bone marrow hyperplasia after chemotherapy
Thymus hyperplasia in young patients.

3
Q

Other nuclear ligands to scan for different tumor types

A

DOPA - for neuroendocrine tumors

Octreotide - for neuroendocrine tumors

MIBG - adrenal receptor for pheochromocytoma

Iodine scintigraphy for well differentiated thyroid cancers

HIDA, or BrIDA compete with bilirubin for excretion, can determine whether lesions are funcitonal/nonfunctional, or if there is occlusion of any of the biliary tracts.

4
Q

Other uses of nuclear medicien

A

Radioguided Occult Lesions Localization surgery

Where the radioligand is injected before surgery and then a handheld gamma probe is used by the surgeon to ensure it is all removed during the surgery,.

Decks in Radiology Class (43):