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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
Q

normal 24 hour iodine uptake

A

10-35%

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26
Q

NRC limit for admission after radioiodine therapy

A

7 mR/h

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27
Q

typical does for graves

A

15 mci

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28
Q

typical dose for multinodular goiter

A

30 mci

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29
Q

what two agents can be used for parenchymal brain imaging

A

hmpao ecd

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30
Q

what agent cannot be used for parenchymal imaging

A

dtpa

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31
Q

dtpa use in brain?

A

shunt study

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32
Q

thallium half life

A

3 days

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33
Q

thallium decays how

A

electron capture

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34
Q

cingulate island sign=

A

dementia with lewy bodies

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35
Q

huntington on brain pet

A

low caudate and putamen

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36
Q

alzheimers brain pet

A

low posterior tempororparietal cortex

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37
Q

LEW BODY on brain pet

A

low lateral occipital with sparing of cingulate gyrus

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38
Q

what agent can be used prior to meckels scan to improve imaging

A

pentagastrin
h2 blcokers
glucagon

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39
Q

what is the dose of CCK

A

0.02 microgram/kg over 60 mins

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40
Q

what is dose of mrophine

A

0.02-0.04mg/kg over 30-60 mins

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41
Q

what two meds can cause prompt uptake with delayed biliary clearance

A

dilantin

birth control pills

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42
Q

what size are particles in sulfur colloid scan

A

0.1-1 micrometers

43
Q

two causes of renal activity on sulfur colloid

A

chf

renal transplant rejection

44
Q

tc DTPA in kidneys

A

filtered CFR

45
Q

tc MAG 3

A

secreted ERPF

46
Q

what is the 20/3 ratio

A

compare counts at 20 and 3 minutes (normal <0.8)

47
Q

sick kidney with dtpa and ace?

A

decreased uptake and flow

48
Q

sick kidney with mag3 and ace?

A

marked tracer retention

49
Q

rejection on renal scan?

A

poor perfusion, delayed excretion

50
Q

atn on renal scan?

A

preserved perufsion with delayed excretion

51
Q

cyclosporine tocitiy on renal scan

A

perfusion normal

excretion delayed

52
Q

urinoma onset?

A

2 weeks post op

53
Q

lymphocele onset

A

4-8 weeks post op

54
Q

tc dmsa critical organ

55
Q

two agents to llook at renal cortex?

A

tc dmsa

tc gh

56
Q

tracer used in testicular imaging

57
Q

findings of acute early torsion

A

focal absence of flow

58
Q

delayed torsion findings

A

halo of increased activity with central photopenia

59
Q

indium half life

60
Q

indium decay?

A

electron capture

61
Q

indium photopeaks

62
Q

prostascint critcial organ

63
Q

indium wbc critical organ

64
Q

indium octreotide critcial organ

65
Q

agent used for lympho?

A

10-50 nm tc labeled SC

66
Q

lymph particle size

A

less than 0.2 microns (<200nm)

67
Q

VQ particle size

A

10-100 microns

68
Q

liver spleen particle size

A

unfiltered

69
Q

lung heart ratio agent

70
Q

lbbb artifcat?

A

false positive spetal reversible perfusion defect

71
Q

yttrium 90 emitter?

72
Q

lung shunt fraction wanted

73
Q

optional yttrium particle size

A

20-40 micrometer

74
Q

yttrium dose

A

100-1000gy

75
Q

yttrium half life

76
Q

liver as critical organ 3

A

prosta scint
i 131 mibg
sulf colloid

77
Q

spleen as critical organ 3

A

octreotide
damaged RBCS
in WBC

78
Q

gallbladder wall as critical organ

79
Q

renal cortex as critical organ

A

thallium

dmsa

80
Q

proximal colon as critical organ 2

A

sulf olloid oral

sestamibi

81
Q

bladder as critical organ 3

A

mag 3
i 123 mibg
mdp

82
Q

distal colon as crtical organ 1

83
Q

tc 99m physical half life

84
Q

idoine 123 phy half life

85
Q

xenon 133 phys half life

A

125 hours (biologic 30 s)

86
Q

thallium half life

87
Q

indium 111 half life

88
Q

gallium 27 half life

89
Q

idoine 131 half life

90
Q

fluorine 18 half life

91
Q

stronitum 89 half life

A

50.5 days (14 in bone)

92
Q

samarium 153 half life

93
Q

yttrium 90 half life

94
Q

rubidum 82 half life

A

75 seconds

95
Q

nitrogen 13 half life

96
Q

tc 99m energy

97
Q

i 123 energy

98
Q

xenon energy

99
Q

thallium energy

100
Q

indium energy

101
Q

gallium energy

A

100
200
300
400

102
Q

i 131 energy

103
Q

fluorine 18 nergy

Rad (18 decks)

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