Green Book wrong answers

Where will you see free pertechnetate?

Skeleton, stomach, thyroid, salivary glands

Why do patients fast before Tl201?

minimize GI uptake

Dipyridamole half life

30 mins

SC uptake before SPECT liver imaging

15 mins

Increased bilirubin levels will cause what to be visualized?

kidneys

Meckels radpharm

pertechnetate

What additional imaging if done for infants with gastroesophageal reflux imaging?

24 hour lung view

ERPF radpharm

MAG3

How to evaluate the quality of the bolus injection?

TAC for superior vena cava

What is/are not visualized on 72 hr Ga67 citrate scan?

Kidneys

What is true about pentreotide?

no HAMA effect

P32 treats what?

polycythemia vera

Dual isotope gastric study used what radpharms?

In111 pentetate for liquid phase, Tc99m sulfur colloid for solid phase

Normal plasma volume:

3L

If there is radioactivity from a previous nuc scan, plasma volume will be

falsely decreased

Captopril dose

25-50 mg

Mo99 tested after

every Tc99m elution

Cold PYP injected into patient for which method of labeling

in vivo and modified in vivo

What kit light sensitive ?!

MAG3

Rf value equation

(Distance traveled by the substance) / (Distance traveled by the solvent front)

What radpharm used to label RBC with Tc99m?

pertechnetate

Imaging rooms should have what radioactive sign?

Caution: radioactive materials

Annual eye limit

250 mSv

Shield material for PET

Tungsten

If Cs137 has drastic change in net counts per min> what should you do?

recaloibrate operating voltage

The lower the cutoff frequency, the

noisier the image

Temporal resolution is related to

framing rate

daily uniformity minimum count

3-5 million

Anti thyroid meds include

tapazole, methimazole, propylthiouracil

Why are static bone images preformed several hours after administration of tracer?

blood clearance of excess tracer

Patency of ventriculoperitoneal shunts uses what tracer?

Tc99m pertechnetate

Patient prep for Sr89 includes

nuc bone imaging, CBC, renal function study, physical exam

GI bleed using sulfur colloid: bleeding best visualized how long after injection?

10-15 mins

Where injected for cardiac first pass?

median basilic vein

Al limit is set by

US pharmacopeia

Excess Al3+ in Tc99m SC localizes in the

lungs

What radpharm is NOT prepared with reduced Tc99m?

Tc99m Sulfur Colloid

Final concentration

Activity added/ volume of vial contents

CT daily QC includes

CT number accuracy

Wipe test are recorded in what units

mRem/hr

energy resolution =

FWHM/keV

Increase butterworth increases

sharpness

GB EF evaluate with

CCK and Tc99m-disofenin

What is Tc99m succimer

DMSA

Renal DMSA uptake time

2 hr

Patient prep for Ga67 citrate?

laxatives

Drip infusion flow rate

10-20 drops / min

Max activity =

Tc99m conc x reconstitution volume

P32 what color

blue-green

Double distance, exposure

reduces to 1/4

1 SV = __ Rem

100

COR preformed when

weekly

Uniformity correction flood map done when?

weekly

LE to HE, what happens to acquisition time?

increase

Half the distance =

4 x exposure

Increasing mA does what to noise

decreases

Tc99m decays by

isomeric transition

If standing when inject MAA, more uptake in

lung bases

6 hour image after Ga67 injection if looking at

osteomyelitis

In111 pentreotide distributes where?

pituitary, spleen, thyroid, liver

Tc99m HMPAO uptake time

90 mins

TBV =

PV/1-HCT x 100

RBC volume =

TBY - PV

Gastric mucosa adjunct med

Pentagastrin

Net Cardiac ROI cts =

Cardiac ROI cts - (bkg roi cts/bkg pixels) x cardiac pixels

Ascorbic acid is a

reducing agent

Linearity can be

± 10%

What reduced star effect during tomographic recon?

filtered backprojection

Volume =

Activity/Concentration