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Procedures > RPs > Flashcards

RPs Flashcards

1
Q

Cystography (voiding)
Vesicoureteral reflux RPs

A

DTPA
Sulfur Colloid
Pertechnetate
I131 OIH 150-300 uCi

Direct tc99m (catheter) 0.5-1 mCi
Indirect tc99m (inject) 3-10 mCi

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2
Q

Tc99m
half life, decay, and produced by

A

6 hours
Isomeric transition, Gamma
Generator

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3
Q

I131
half life, decay, and produced by

A

8.1 days
B-, gamma
Fission reactor

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4
Q

Renal Cortical imaging RPs

A

DMSA 1-6 mCi
GH 10-20 mCi

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5
Q

Renogram RPs

A

DTPA - for GFR 5-10 mCi
MAG3 - for ERPF 2-5 mCi

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6
Q

MAG3 localization for renals

A

Tubular secretion - ERPF

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7
Q

DTPA localization for renals

A

Glomerulus - GFR

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8
Q

DMSA localization for renals

A

Binds to plasma proteins in renal cortex - fixed in - slow clearance

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9
Q

Lasix dose

A

20-40 mg or based on creatinine

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10
Q

ACEI dose

A

25-59 mg Captopril, image after 1 hour

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11
Q

Infection imaging RPs

A

Tc99m tagged WBCs Exametazime (Ceretec) 5-10 mCi

In111 tagged WBCs 500 uCi

Ga67 Citrate 2-6 mCi

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12
Q

Ga67 half life, decay, produced, used for?

A

78.3 hours
Electron capture, gamma
Accelerator
Infection or tumors

4 energies - Med to High collimator

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13
Q

Ga67 localization and excretion

A

Iron analog, iron binding proteins

ER

Bowel/hepatobiliary

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14
Q

In111 oxine half life, decay, produced by

A

2.8 days
Electron capture, gamma
Accelerator produced

Med collimator

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15
Q

In111 oxine localization and excretion

A

RE
Bowel

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16
Q

Best RP for infection imaging in abdomen

A

In111

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17
Q

Best RP for infection imaging in spine

A

Ga67

18
Q

GI bleed RPs

A

99mTc pertechnetate tagged RBCs 20-30 mCi

Sulfur colloid 10-20 mCi

19
Q

Best RP for intermittent bleeding

A

99mTc pertechnetate tagged RBCs 20-30 mCi

20
Q

Best RP for active bleeding

A

Sulfur Colloid 10-20 mCi

21
Q

How much blood do you pull for GI bleed in vitro method?

A

2-2.5 mL

Tag with ultratag kit

22
Q

What divides upper and lower GI tract

A

Ligament of Treitz

23
Q

Renal cortical imaging RP

A

99mTc DMSA 1-6 mCi
99mTc GH 10-20 mCi

24
Q

Thyroid RPs

A

99mTc Pertechnetate
I123 sodium iodide
I131 sodium iodide

99mTc imaging only; I123 and I131 are for uptake and imaging

I131 imaging is not recommended

25
Q

Thyroid uptake doses

A

I123 - 100-200 uCi
I131 - 4-10 uCi

26
Q

Thyroid imaging doses

A

99mTc 2-10 mCi
I123 200-600 uCi
I131 50-200 uCi

27
Q

When is imaging preformed for thyroid RPs?

A

99mTc 15-30 mins
I123 3-4 or 16-24 hours
I131 6-24 hours

28
Q

cold thyroid nodules mean?

A

carcinoma, benign adenoma, cyst, hematoma, inflamatory conditions

29
Q

Hot thyroid nodule means?

A

benign

30
Q

GI bleed RPs

A

99mTc pertechnetate Tagged RBCs
99mTc Sulfur Colloid

RBCs 20-30 mCi
SC 10-20 mCi

31
Q

Best RP for intermittent GI bleed

A

99mTc Tagged RBCs

Sulfur colloid is best for active bleeding, it clears so fast

32
Q

99mTc tagged RBCs for GI bleed localization and excretion

A

compartmental

excreted renally

33
Q

Melena (black stool) indicates a GI bleed where?

A

upper GI

34
Q

Normal uptake of 99mTc tagged RBCs

A

spleen, liver, great vessels, heart, bladder and kidney due to excretion

35
Q

an active bleed with Sulfur Colloid will visualize in ___ minutes

A

5 minutes

36
Q

Mebrofinin for HIDA takes up in what cells

A

Hepatocytes

37
Q

Ga67 energies and collimator

A

93, 184, 296, 388 keV

Medium or high

38
Q

Pt prep for Ga67

A

None except bowl prep

39
Q

Tracer of choice when imaging for infection in the abdomen

A

In111 labeled WBCs

40
Q

Bone marrow and WBC imaging

A

Sulfur colloid 10 mCi
And In111 WBCs 0.3-1 uCi

Either one can be injected first
2 day protocol

41
Q

In111 pentetate DTPA energies

A

2 gamma

173, 247 keV

Procedures (17 decks)

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