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Look up the uses and uptakes of different Tech tracers:
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RBC
assessment of occult gastrointestinal hemorrhage
assessment of vascular lesions, e.g. hepatic hemangioma
assessment of cardiac function, first pass or equilibrium
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Tc pertechnetate
thyroid imaging - Hashimoto and Graves (I-123 for nodules/cancer or thyrotoxicosis)
Meckel scan
testicular scintigraphy
parathyroid subtraction study
gastric emptying, intestinal and rectal functional studies
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MAG3
- renal imaging
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DTPA
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glomerular renal imaging
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glomerular filtration rate
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HIDA
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MDP bone
- bone scintigraphy
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Tech pyrophosphate
- cardiac amyloidosis imaging
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MAA
- lung perfusion imaging
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Sulfur colloid
splenic and hepatic imaging
taken up by the spleen, Kupffer cells in the liver and a small proportion by bone marrow
bone marrow and soft tissue infection scintigraphy
lymphatic scintigraphy, e.g. sentinel node lymphoscintigraphy
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Sestamibi
cardiac imaging
parathyroid imaging
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Look up uses, half life, energies of:
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Ga 67 citrate
- (93, 185, 288, 394 KeV energy) spectra
- t1/2 ~78hrs
- crtiical organ is bone surfaces
localization of source of fever in cases of fever of unknown origin (FUO)sarcoidosis tuberculosis retroperitoneal fibrosis bleomycin and amiodarone induced pulmonary toxicity spinal osteomyelitis lung cancer ulcerative colitis non-specific tumor imaging agent (used in lymphomas in the past, before advent of F-18 FDG PET-CT) deep vein thrombosis interstitial nephritis pneumoconioses -
Indium 111 WBC
photon energy: 174 KeV, 247 KeV
physical half-life: 2.8 days
normal distribution: spleen, liver, bone (first 4 hours pulmonary activity seen)
attempts to localize infection and/or inflammation by injecting the patient’s previously extracted and radioactively-labeled WBCs -
Different Iodines, which ones we use for what including I-124 and I-125
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