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37 Cards in this Set
- Front
- Back
swyer james syndrome
pathophys |
unilateral or focal post-infectious obliterative bronchiolitis, an acquired hypoplastic lung dz
air enters lungs by a drift phenomenon and becomes trapped because of bronchiolar obx |
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general imaging findings of swyer james syndrome
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focal lung hyperlucency
decreased vascularity nml-decreased volume of affected lung air trapping in affected lung |
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nuclear medicine findings of swyer james
what is another name for swyer james syndrome |
unilateral matched v/q defect
acquired hypoplastic lung dz |
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what bv serves the following in heart:
anterior inferior lateral septal |
LAD
RCA/PDA LCx LAD, septal perforators |
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what can help you exclude breast attenuation as a cause of a non-reversible defect on cardiac stress test
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breast attenuation spares the apex of the heart
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what is transient ischemic dilatation
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the cavity gets bigger during contraction
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in what scenario would you get an FDG PET MIP on a pt who is s/p total thyroidectomy for thyroid ca
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thyroid ca is usually monitored by i131 and tgo lvls
elevate thyroglobulin and a negative i 131 scan in a de-differentiated thyroid ca, i131 won't be taken up (cold nodule), so you have to use pet. |
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what % of pts with chronic cholecystitis have a nml hida scan
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90%
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why shouldn't whole body i131 scintigraphy be performed immediately after administration of dose
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isotope won't be in thyroid
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why shouldn't whole body i131 scintigraphy be performed immediately after administration of dose
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i131 will still be too bright
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when is the ideal time to image a pt after whole body i131 scintigraphy
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5-7 days
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what is the purpose of whole body i131 scintiraphy
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to make sure you didn't miss anything after pt has been treated
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what would you expect to see if an intra-arteral inection during bone scan was accidentally performed
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you would only see the hand.
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what would you expect to see if during injection prior to bone scan, there was extravasation of the isotope
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you would have visualization of LN (similar to doing a lymphoscintigraphy)
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what dzs are adventagous to dx with ga-67
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diskitis
malignant otitis externa pcp granulomatous dz sarcoid fungal infx |
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what % of diskitis is missed if in-111 is used
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75%!
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what T score corresponds with osteopenia
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-1 - -2.5
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what T score is nml
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>= -1
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what T score corresponds with osteoporosis
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<= -2.5, no fx
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what T score corresponds to established osteoporosis
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<= -2.5, with fx
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what test looks for radiochemical purity, free of Tc and Tc colloids
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thin layer chromotography
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what test looks for pyrogencity
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limulus lysate test, which uses horseshoe crab extract to form gel when mixed with endotoxins
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what test looks for alumina
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colorimetric paper testing
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what test looks for Mo-99 breakthrough
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lead shield testing that looks at a ratio of Mo-99 to Tc 99m
(dose limit 0.15kBq Mo/1MBq Tc99m) |
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what would make the dx of diaphragmnatic attenuation more favorable than inferior wall ischemia
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diaphragmatic attenuation usually persists at rest and during stress, unless position of pt has drastically changed.
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which is more common in women: malignant or benign thyroid disease
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benign
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is thyroid CA more common in men or women?
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women
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MOA tc99m sestamibi
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distributes into cells with high mitochondrial content and gets taken up because of increased membrane potential
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which thyroid ca most often has skeletal mets
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follicular
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what is the agent used in a pth scan
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tc99m labeled sestamibi
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which can be visualized with a gamma camera:
quadramet or metastron |
quadramet
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which is more clinically effective in managing pain from mets:
quadramet or metastron |
quadramet
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which has more BM toxicity:
quadramet or metastron which has a faster recovery time |
quadramet
quadramet |
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which primary malignancies give you cold expansile, lytic lesions on bone scan
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breast and lung >>> RCC, thyroid CA
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what changes on a bone scan would you expect in a pt with severe osteoporosis
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decresaed activity in skeletal system with increased activity in the soft tissues
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where would you see metastatic calcifications from thyroid CA
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increased activities in stomach, lungs, kidney, ST
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where would you expect to see free Tc99m and why does it happen? how can you test for it
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stomach, thyroid, salivary glands
poor labeling of MDP check for it with TLC |