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Nucs Flashcards

1
Q

Renal and GI seen on Tc or In labeled WBC?

A

tech

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2
Q

tc mdp crticial organ

A

bone

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3
Q

f 18 critical organ

A

bladder

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4
Q

marked increase of skull sutures on bone scan

A

renal osteodystrophy

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5
Q

hot renal cortex activity?

A

hemochromatosis

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6
Q

bone scan at what time will exclude fracture

A

1 week

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7
Q

metabolic causes of super scan

A

hyperPTH
renal osteodystrophy
pagets
severe thyrotoxicosis

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8
Q

what two scenarios to use tc 99 HMPAO over in WBC for inection?

A

kids

hands/feet

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9
Q

what is critical organ in IN WBC?

A

spleen

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10
Q

bio half life of tc 99m MAA?

A

4 hours

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11
Q

physical half life of xenon 133

A

5.3 days

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12
Q

biological half life of xenon 133

A

30 seconds

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13
Q

xenon 133 energey

A

80 kev

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14
Q

particle size of MAA?

A

10-100

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15
Q

gallium half life

A

3 days

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16
Q

critical organ in gallium?

A

colon

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17
Q

panda sign is seen in what three things

A

sarcoid
sjogrens
treated lymphoma

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18
Q

what is not organified? i 123, i 131 or tc

A

tc

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19
Q

1/2 life i 123

A

13 hours

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20
Q

energy i 123

A

159 kev

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21
Q

tc 99m breast feeding

A

12-24 hours

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22
Q

I 123 breast feeding

A

2-3 days

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23
Q

ioding uptake doses

A

5 mci I 131, 10-20 mci I123

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24
Q

normal 4 hour idoine uptake

A

5-15%

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25
normal 24 hour iodine uptake
10-35%
26
NRC limit for admission after radioiodine therapy
7 mR/h
27
typical does for graves
15 mci
28
typical dose for multinodular goiter
30 mci
29
what two agents can be used for parenchymal brain imaging
hmpao ecd
30
what agent cannot be used for parenchymal imaging
dtpa
31
dtpa use in brain?
shunt study
32
thallium half life
3 days
33
thallium decays how
electron capture
34
cingulate island sign=
dementia with lewy bodies
35
huntington on brain pet
low caudate and putamen
36
alzheimers brain pet
low posterior tempororparietal cortex
37
LEW BODY on brain pet
low lateral occipital with sparing of cingulate gyrus
38
what agent can be used prior to meckels scan to improve imaging
pentagastrin h2 blcokers glucagon
39
what is the dose of CCK
0.02 microgram/kg over 60 mins
40
what is dose of mrophine
0.02-0.04mg/kg over 30-60 mins
41
what two meds can cause prompt uptake with delayed biliary clearance
dilantin | birth control pills
42
what size are particles in sulfur colloid scan
0.1-1 micrometers
43
two causes of renal activity on sulfur colloid
chf | renal transplant rejection
44
tc DTPA in kidneys
filtered CFR
45
tc MAG 3
secreted ERPF
46
what is the 20/3 ratio
compare counts at 20 and 3 minutes (normal <0.8)
47
sick kidney with dtpa and ace?
decreased uptake and flow
48
sick kidney with mag3 and ace?
marked tracer retention
49
rejection on renal scan?
poor perfusion, delayed excretion
50
atn on renal scan?
preserved perufsion with delayed excretion
51
cyclosporine tocitiy on renal scan
perfusion normal | excretion delayed
52
urinoma onset?
2 weeks post op
53
lymphocele onset
4-8 weeks post op
54
tc dmsa critical organ
kidney
55
two agents to llook at renal cortex?
tc dmsa | tc gh
56
tracer used in testicular imaging
na99mtcO4
57
findings of acute early torsion
focal absence of flow
58
delayed torsion findings
halo of increased activity with central photopenia
59
indium half life
67 hours
60
indium decay?
electron capture
61
indium photopeaks
173 | 247
62
prostascint critcial organ
liver
63
indium wbc critical organ
spleen
64
indium octreotide critcial organ
spleen
65
agent used for lympho?
10-50 nm tc labeled SC
66
lymph particle size
less than 0.2 microns (<200nm)
67
VQ particle size
10-100 microns
68
liver spleen particle size
unfiltered
69
lung heart ratio agent
thallum
70
lbbb artifcat?
false positive spetal reversible perfusion defect
71
yttrium 90 emitter?
beta
72
lung shunt fraction wanted
under 10%
73
optional yttrium particle size
20-40 micrometer
74
yttrium dose
100-1000gy
75
yttrium half life
2.67 days
76
liver as critical organ 3
prosta scint i 131 mibg sulf colloid
77
spleen as critical organ 3
octreotide damaged RBCS in WBC
78
gallbladder wall as critical organ
hida
79
renal cortex as critical organ
thallium | dmsa
80
proximal colon as critical organ 2
sulf olloid oral sestamibi
81
bladder as critical organ 3
mag 3 i 123 mibg mdp
82
distal colon as crtical organ 1
gallium
83
tc 99m physical half life
6 hours
84
idoine 123 phy half life
13 hours
85
xenon 133 phys half life
125 hours (biologic 30 s)
86
thallium half life
73 hours
87
indium 111 half life
67 hours
88
gallium 27 half life
78 hours
89
idoine 131 half life
8days
90
fluorine 18 half life
110 mins
91
stronitum 89 half life
50.5 days (14 in bone)
92
samarium 153 half life
46 hours
93
yttrium 90 half life
64 hours
94
rubidum 82 half life
75 seconds
95
nitrogen 13 half life
10 mins
96
tc 99m energy
140
97
i 123 energy
159
98
xenon energy
81
99
thallium energy
135 | 167
100
indium energy
173 | 247
101
gallium energy
100 200 300 400
102
i 131 energy
365
103
fluorine 18 nergy
511

Rad (18 decks)

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