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25 Cards in this Set
- Front
- Back
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Unilateral lung perfusion ddx
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SAFE POEM
Swyer-James syndrome Agenesis (pulmonary artery) Fibrosis (mediastinal) Effusion (pleural) Pneumonectomy, pneumothorax Obstruction by tumor Embolus (pulmonary) Mucous plug |
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Ga-67 half life
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6-7-8: Ga-67 has 78 hrs half life
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Ga-67 photo peaks
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Ga has 3 G energies (G)
roughly "100, 200, 300" but remember 4 from each. 94, 184,"", and 296 (300-4). also has a 4th photopeak --395 KeV which is not used for imaging |
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Indium-111 half life
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3 day half life (1 + 1 + 1)
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Iodine-123 half life
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Iodine 123 has a 13 hour half life (1, take out the 2, 3)
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Thallium & gallium half lives
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Thallium & gallium, and indium all have 3 syllables, and half lives are 3 days.
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Indications for Gallium scan
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LISA
Lymphoma Infection (Lung)(MAI) Sarcoid Abscess |
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PET half-lives
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2 minutes = Oxygen, 20 minutes = carbon, 2 hours = FDG, Ammonia: N-13 has a 10 minute half-life
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MIBG Image protocol
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MIBG-4 letters, image at 4 and 24 hrs.
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Cold thyroid defect
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CATCH PALM
Cancer Adenoma Thyroidits Colloid Cyst Hematoma Parathyroid Abscess Lymph node/lymphoma Metastasis |
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Dose quality control
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dose caliber qulity control: (is roughly alphabetic)
A=A Accuracy = annually, (count loss, resolution) C=D Constancy =Daily (uniformity) G=I Geometry -Installation, L=Q Linearity = Quarteryl |
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Papillary versus Follicular thyroid ca spread
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Papillary thyroid ca spreads by lymphatics whereas follicular spreads by hematogenous. P is closest to L in alphabet, F is closes to H. each are only 1 letter away!
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Diamox drug function
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DIAamox DIAlates (wrong spelling for dilate) the cerebral vessels
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Thallium vs Gallium
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Thor's little kids: positive on lymphoma nad kaposi's. Green infected lumps: positive on infection and lymphoma
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NRC limit for 99Mo breakthrough during Tc-99 generation
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"MOMI" 1 microCi Mo-99 per 1 mCi of Tc99
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NRC limit for Al3+ breakthrough during Tc-99 generation
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20 microgram per mL of eluate.
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Which is conventional versus SI unit, which is Absorbed dose and dose equivalent?
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Conventional absorbed dose and dose equivalent is Rad (A.D.) and REm (equivalent). SI Absorbed Dose is Gray, and dose equivalent is Sievert (think of the website.
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Convert rad and Gray.
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100 radiologists need to work for a man in a Gray suit. (100 rads = 1 Gray)
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Convert Curie and Becquerel
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"1 Madame Curie is as smart as 3 to 4 Googles."
1 mCi = 37 megaBq. 1 curie = 3.7 x10^10 disintegrations/second. |
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Limits for various Radiation area signs
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Think of a Millypede playing a REM record for an HOUR using JLF bills (2-5-100 dollar bills)
Unrestricted (<2 mrem/hr) Radiation area (>5 mrem/hr) and High radiation (>100 mrem/hr at 30 cm from source). |
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Limits for radioactive package labels for external (not wipe test)
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Think of Millypede playing a REM record for an HOUR using a 05-50-and 200 (0.5, 50 and 200 mrem/hr for white 1, yellow 2 and yellow 3 signs).
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Dose limits per body part
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Public 100 mrem (for frequent exposure), Annual occupational is 5 to body, 15 rem to eye, 50 to any organ. and 500mrem during pregnancy. 500 mrem for infrequent exposure.
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What level of I-131 needs written directive?
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30 and above. (30 uCi)
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Medical event is defined by NRC as
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Effective dose excess of 5 rem or organ of 50 rem AND differs from prescribed dose by 20% or more.
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normal iodine uptake % values
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iodine = 6 letters. early 18%; late is 36%
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