Springer HARD EXAM -NMTCB
PRACTICE QUESTIONS WITH CORRECT
ANSWERS
MAA Particle size - Answer-90% between 10-90 microns, no more than 150
Particle size for unfiltered SC - Answer-less than 1 micron
Particle size for filtered SC - Answer-0.22 microns
Where does SC when particles are too large - Answer-Lungs
Where does Mo99m go when there is too much in eluate (>0.15 microcurie/1 mCi Tc) -
Answer-Liver (parenchymal cells)
Where will you see alumina uptake? - Answer-Liver on a bone scan (>10 micrograms/ml
of Tc eluate)
Where will you see MAA go when the particles are too small? - Answer-Kidneys, brain,
maybe liver
Where would you see uptake of FREE Tc99m? - Answer-thyroid, stomach, salivary
glands, choroid plexus
Where would you see uptake of REDUCED HYDROLYZED Tc99m? - Answer-colloidal
particles localize in the liver
What is the purity percentage for Pertechnetate - Answer->95%
What is the purity percentage for most Tc kits? - Answer->90%
What is the purity percentage for SC? - Answer->92%
What is the conversion for MBq to mCi? - Answer-37 MBq = 1 mCi
What is the conversion for kg to lbs? - Answer-2.2 lbs = 1 kg
What regulatory guidelines are the DOT under for radiation safety? - Answer-Title 49
CFR 171-173
What regulatory guidelines are the NRC under for radiation safety? - Answer-Title 10
CFR part 19, 20, 30, 31, 32, 33, 35, 71 (DOT)
, What is the equation for Total dose? - Answer-total dose = (dose rate)(time)
How are HVLs incorporated into the total dose equation? - Answer-2 HVLs: total dose =
(dose rate * 0.5 * 0.5)(time)
Ra 223 (Xofigo) - what form of radiation and what is its purpose? - Answer-alpha
radiation and treatment of CSPC (castration specific prostate cancer) - 1.35 uCi/kg
I-131 - what form of radiation and what is its purpose? - Answer-Gamma,Beta and
treatment for hyperthyroidism, thyroid cancer, NHL -
Sr-89 (Metastron) - what form of radiation and what is its purpose? - Answer-Beta and
treatment of bone pain - 40 to 60 uCi/kg
Sm-153 EDTMP (Quadramet) - what form of radiation and what is its purpose? -
Answer-Gamma,Beta and treatment of bone pain - 1 mCi/kg
*Gamma (103 keV) is for imaging and Beta is for therapy*
I-125 seeds - what form of radiation and what is its purpose? - Answer-Gamma and
brachytherapy - implanted into the prostate gland using US guidance
Y-90 - what form of radiation and what is its purpose? - Answer-Beta,Xray and
treatment of NHL (Zevalin) or Hepatic metastasis (microspheres/theraspheres)
*Zevalin - 0.3 to 0.4 mCi/kg (max 32 mCi)*
*Therasperes - 35 to 70 mCi intra-arterial*
What are anticoagulant options? - Answer-ACD (for RBC labeling) , EDTA (for GFR Tc
tagging), or Heparin (for PICC lines or ports)
Image evaluation: what is happening when you see vascularity (vascular structures) on
a RBC study? - Answer-There is some sort of RBC issue - minimal liver/spleen, more
veins/arteries
Image evaluation: hot liver/spleen - Answer-SC localizes here
Image evaluation: stomach activity and RLQ activity if abnormal - Answer-Meckels
Image evaluation: In-111 WBC or Tc99m HMPAO? - Answer-Bladder on HMPAO
because IN-111 isnt excreted through the bladder
Steps for labeling WBCs with In-111 - Answer-1. Collect cells in 60cc syringe with ACD
2. let cells settle
3. draw off wbc rich plasma and centrifuge (discard RBCs)
4. draw off *platelet rich plasma (PRP)* and added In-111 to WBC button
5. centrifuge PRP - draw off *platelet poor plasma (PPP)*
6. re-suspend wbcs in PPP and reinject into patient
PRACTICE QUESTIONS WITH CORRECT
ANSWERS
MAA Particle size - Answer-90% between 10-90 microns, no more than 150
Particle size for unfiltered SC - Answer-less than 1 micron
Particle size for filtered SC - Answer-0.22 microns
Where does SC when particles are too large - Answer-Lungs
Where does Mo99m go when there is too much in eluate (>0.15 microcurie/1 mCi Tc) -
Answer-Liver (parenchymal cells)
Where will you see alumina uptake? - Answer-Liver on a bone scan (>10 micrograms/ml
of Tc eluate)
Where will you see MAA go when the particles are too small? - Answer-Kidneys, brain,
maybe liver
Where would you see uptake of FREE Tc99m? - Answer-thyroid, stomach, salivary
glands, choroid plexus
Where would you see uptake of REDUCED HYDROLYZED Tc99m? - Answer-colloidal
particles localize in the liver
What is the purity percentage for Pertechnetate - Answer->95%
What is the purity percentage for most Tc kits? - Answer->90%
What is the purity percentage for SC? - Answer->92%
What is the conversion for MBq to mCi? - Answer-37 MBq = 1 mCi
What is the conversion for kg to lbs? - Answer-2.2 lbs = 1 kg
What regulatory guidelines are the DOT under for radiation safety? - Answer-Title 49
CFR 171-173
What regulatory guidelines are the NRC under for radiation safety? - Answer-Title 10
CFR part 19, 20, 30, 31, 32, 33, 35, 71 (DOT)
, What is the equation for Total dose? - Answer-total dose = (dose rate)(time)
How are HVLs incorporated into the total dose equation? - Answer-2 HVLs: total dose =
(dose rate * 0.5 * 0.5)(time)
Ra 223 (Xofigo) - what form of radiation and what is its purpose? - Answer-alpha
radiation and treatment of CSPC (castration specific prostate cancer) - 1.35 uCi/kg
I-131 - what form of radiation and what is its purpose? - Answer-Gamma,Beta and
treatment for hyperthyroidism, thyroid cancer, NHL -
Sr-89 (Metastron) - what form of radiation and what is its purpose? - Answer-Beta and
treatment of bone pain - 40 to 60 uCi/kg
Sm-153 EDTMP (Quadramet) - what form of radiation and what is its purpose? -
Answer-Gamma,Beta and treatment of bone pain - 1 mCi/kg
*Gamma (103 keV) is for imaging and Beta is for therapy*
I-125 seeds - what form of radiation and what is its purpose? - Answer-Gamma and
brachytherapy - implanted into the prostate gland using US guidance
Y-90 - what form of radiation and what is its purpose? - Answer-Beta,Xray and
treatment of NHL (Zevalin) or Hepatic metastasis (microspheres/theraspheres)
*Zevalin - 0.3 to 0.4 mCi/kg (max 32 mCi)*
*Therasperes - 35 to 70 mCi intra-arterial*
What are anticoagulant options? - Answer-ACD (for RBC labeling) , EDTA (for GFR Tc
tagging), or Heparin (for PICC lines or ports)
Image evaluation: what is happening when you see vascularity (vascular structures) on
a RBC study? - Answer-There is some sort of RBC issue - minimal liver/spleen, more
veins/arteries
Image evaluation: hot liver/spleen - Answer-SC localizes here
Image evaluation: stomach activity and RLQ activity if abnormal - Answer-Meckels
Image evaluation: In-111 WBC or Tc99m HMPAO? - Answer-Bladder on HMPAO
because IN-111 isnt excreted through the bladder
Steps for labeling WBCs with In-111 - Answer-1. Collect cells in 60cc syringe with ACD
2. let cells settle
3. draw off wbc rich plasma and centrifuge (discard RBCs)
4. draw off *platelet rich plasma (PRP)* and added In-111 to WBC button
5. centrifuge PRP - draw off *platelet poor plasma (PPP)*
6. re-suspend wbcs in PPP and reinject into patient
