RPs

Question 1

Cystography (voiding)
Vesicoureteral reflux RPs

Answer 1

DTPA
Sulfur Colloid
Pertechnetate
I131 OIH 150-300 uCi

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

Question 2

Tc99m
half life, decay, and produced by

Answer 2

6 hours
Isomeric transition, Gamma
Generator

Question 3

I131
half life, decay, and produced by

Answer 3

8.1 days
B-, gamma
Fission reactor

Question 4

Renal Cortical imaging RPs

Answer 4

DMSA 1-6 mCi
GH 10-20 mCi

Question 5

Renogram RPs

Answer 5

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

Question 6

MAG3 localization for renals

Answer 6

Tubular secretion - ERPF

Question 7

DTPA localization for renals

Answer 7

Glomerulus - GFR

Question 8

DMSA localization for renals

Answer 8

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

Question 9

Lasix dose

Answer 9

20-40 mg or based on creatinine

Question 10

ACEI dose

Answer 10

25-59 mg Captopril, image after 1 hour

Question 11

Infection imaging RPs

Answer 11

Tc99m tagged WBCs Exametazime (Ceretec) 5-10 mCi

In111 tagged WBCs 500 uCi

Ga67 Citrate 2-6 mCi

Question 12

Ga67 half life, decay, produced, used for?

Answer 12

78.3 hours
Electron capture, gamma
Accelerator
Infection or tumors

4 energies - Med to High collimator

Question 13

Ga67 localization and excretion

Answer 13

Iron analog, iron binding proteins

ER

Bowel/hepatobiliary

Question 14

In111 oxine half life, decay, produced by

Answer 14

2.8 days
Electron capture, gamma
Accelerator produced

Med collimator

Question 15

In111 oxine localization and excretion

Answer 15

RE
Bowel

Question 16

Best RP for infection imaging in abdomen

Answer 16

In111

Question 17

Best RP for infection imaging in spine

Answer 17

Ga67

Question 18

GI bleed RPs

Answer 18

99mTc pertechnetate tagged RBCs 20-30 mCi

Sulfur colloid 10-20 mCi

Question 19

Best RP for intermittent bleeding

Answer 19

99mTc pertechnetate tagged RBCs 20-30 mCi

Question 20

Best RP for active bleeding

Answer 20

Sulfur Colloid 10-20 mCi

Question 21

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

Answer 21

2-2.5 mL

Tag with ultratag kit

Question 22

What divides upper and lower GI tract

Answer 22

Ligament of Treitz

Question 23

Renal cortical imaging RP

Answer 23

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

Question 24

Thyroid RPs

Answer 24

99mTc Pertechnetate
I123 sodium iodide
I131 sodium iodide

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

I131 imaging is not recommended

Question 25

Thyroid uptake doses

Answer 25

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

Question 26

Thyroid imaging doses

Answer 26

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

Question 27

When is imaging preformed for thyroid RPs?

Answer 27

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

Question 28

cold thyroid nodules mean?

Answer 28

carcinoma, benign adenoma, cyst, hematoma, inflamatory conditions

Question 29

Hot thyroid nodule means?

Answer 29

benign

Question 30

GI bleed RPs

Answer 30

99mTc pertechnetate Tagged RBCs 99mTc Sulfur Colloid | RBCs 20-30 mCi SC 10-20 mCi

Question 31

Best RP for intermittent GI bleed

Answer 31

99mTc Tagged RBCs | Sulfur colloid is best for active bleeding, it clears so fast

Question 32

99mTc tagged RBCs for GI bleed localization and excretion

Answer 32

compartmental excreted renally

Question 33

Melena (black stool) indicates a GI bleed where?

Answer 33

upper GI

Question 34

Normal uptake of 99mTc tagged RBCs

Answer 34

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

Question 35

an active bleed with Sulfur Colloid will visualize in ___ minutes

Answer 35

5 minutes

Question 36

Mebrofinin for HIDA takes up in what cells

Answer 36

Hepatocytes

Question 37

Ga67 energies and collimator

Answer 37

93, 184, 296, 388 keV Medium or high

Question 38

Pt prep for Ga67

Answer 38

None except bowl prep

Question 39

Tracer of choice when imaging for infection in the abdomen

Answer 39

In111 labeled WBCs

Question 40

Bone marrow and WBC imaging

Answer 40

Sulfur colloid 10 mCi And In111 WBCs 0.3-1 uCi Either one can be injected first 2 day protocol

Question 41

In111 pentetate DTPA energies

Answer 41

2 gamma 173, 247 keV