NMTCB ACTUAL EXAM PAPER 2026
QUESTIONS AND SOLUTIONS GRADED A+
◉ a tech receives a request for a patient to receive Sm153 for
palliation of pain from bone mets. the patient has a WBC count of
3500 and 40000 platelets. what should happen next?
a. the order should be changed to Sr89
b. the tx should be delayed until the platelet ct is at least 60,000
c. the tx should be delayed until the WBC is below 2400
d. the Sm153 should be ordered
Answer: B. the tx should be delayed until the platelet ct is at least
60,000
◉ a SC kit requires the addition of 1-3 ml containing no more than
500mCi of TcO4-. in addition, 1.5 ml of solution A must be added
before boiling, and 1.5 ml of Solution B must be added after cooling.
If the kit is correctly prepared, what is the max concentration of
Tc99m it could contain?
a. 83 mCi/ml
b. 125 mCi/ml
c. 167 mCi/ml
d. 500 mCi/ml
,Answer: B. 125 mCi/ml
max. 1 ml TcO4- containing 500 mCi
500/(1.5+1.5+1) = 125 mCi/ml
◉ A hine-duley phantom is useful for testing the spatial resolution
and spatial linearity with only one image.
a. true
b. false
Answer: B. false
◉ the advantage of a lung ventilation scan performed with Xenon is
a. the ability to match perfusion and vent positioning
b. the ability to detect delayed washout
c. the ability to perform the exam at the patient's bedside
d. the ability to perform perfusion before ventilation without
increasing the dose given for the vent study
Answer: B. the ability to detect delayed washout
◉ A diphosphonate kit contian 180 mCi of Tc99m in 30 ml when it is
prepared at 8am. Immediately, a 20 mCi dose is withdrawn for a
bone scan. if the patient arrives late at 9:30 and half the volume is
accidentally discharged, how much volume from the kit must now be
,added to the syringe to correct the dose to 20 mCi? (no other doses
have been withdrawn meanwhile, and the decay factor for 1.5 hrs is
0.841)
a. 1.5 ml
b. 2.0 ml
c. 2.3 ml
d. 2.5 ml
e. 2.7 ml
Answer: C. 2.3 mL
lots of math, sorry :(
◉ a WBS bone scan film shows a good posterior image, but the
anterior view appears diffuse with greater soft tissue activity. what
is the probable cause?
a. wrong collimator used for anterior
b. increased patient to detector distance on the ant relative to the
post
c. low tagging efficiency of the RP
d. patient was not sufficiently hydrated
e. none of the above
Answer: b. increased patient to detector distance on the ant relative
to the post
, ◉ Which of the following will not reduce the probability of
contamination from perspiration and saliva of a therapy patient?
a. disposable eating utensils
b. plastic covering over the mattress
c. covering the phone receiver with plastic
d. collecting the patient's waste and storing until decayed to
background
Answer: d. collecting the patient's waste and storing until decayed to
background
◉ bone marrow imaging is performed using:
a. MDP
b. HDP
c. sulfur colloid
d. Gd153
e. A and B
Answer: C. sulfur colloid
◉ why would an image of the brain be obtained during a lung
perfusion scan using Tc99m MAA?
a. rule out brain mets
b. to detect low tagging efficiency
QUESTIONS AND SOLUTIONS GRADED A+
◉ a tech receives a request for a patient to receive Sm153 for
palliation of pain from bone mets. the patient has a WBC count of
3500 and 40000 platelets. what should happen next?
a. the order should be changed to Sr89
b. the tx should be delayed until the platelet ct is at least 60,000
c. the tx should be delayed until the WBC is below 2400
d. the Sm153 should be ordered
Answer: B. the tx should be delayed until the platelet ct is at least
60,000
◉ a SC kit requires the addition of 1-3 ml containing no more than
500mCi of TcO4-. in addition, 1.5 ml of solution A must be added
before boiling, and 1.5 ml of Solution B must be added after cooling.
If the kit is correctly prepared, what is the max concentration of
Tc99m it could contain?
a. 83 mCi/ml
b. 125 mCi/ml
c. 167 mCi/ml
d. 500 mCi/ml
,Answer: B. 125 mCi/ml
max. 1 ml TcO4- containing 500 mCi
500/(1.5+1.5+1) = 125 mCi/ml
◉ A hine-duley phantom is useful for testing the spatial resolution
and spatial linearity with only one image.
a. true
b. false
Answer: B. false
◉ the advantage of a lung ventilation scan performed with Xenon is
a. the ability to match perfusion and vent positioning
b. the ability to detect delayed washout
c. the ability to perform the exam at the patient's bedside
d. the ability to perform perfusion before ventilation without
increasing the dose given for the vent study
Answer: B. the ability to detect delayed washout
◉ A diphosphonate kit contian 180 mCi of Tc99m in 30 ml when it is
prepared at 8am. Immediately, a 20 mCi dose is withdrawn for a
bone scan. if the patient arrives late at 9:30 and half the volume is
accidentally discharged, how much volume from the kit must now be
,added to the syringe to correct the dose to 20 mCi? (no other doses
have been withdrawn meanwhile, and the decay factor for 1.5 hrs is
0.841)
a. 1.5 ml
b. 2.0 ml
c. 2.3 ml
d. 2.5 ml
e. 2.7 ml
Answer: C. 2.3 mL
lots of math, sorry :(
◉ a WBS bone scan film shows a good posterior image, but the
anterior view appears diffuse with greater soft tissue activity. what
is the probable cause?
a. wrong collimator used for anterior
b. increased patient to detector distance on the ant relative to the
post
c. low tagging efficiency of the RP
d. patient was not sufficiently hydrated
e. none of the above
Answer: b. increased patient to detector distance on the ant relative
to the post
, ◉ Which of the following will not reduce the probability of
contamination from perspiration and saliva of a therapy patient?
a. disposable eating utensils
b. plastic covering over the mattress
c. covering the phone receiver with plastic
d. collecting the patient's waste and storing until decayed to
background
Answer: d. collecting the patient's waste and storing until decayed to
background
◉ bone marrow imaging is performed using:
a. MDP
b. HDP
c. sulfur colloid
d. Gd153
e. A and B
Answer: C. sulfur colloid
◉ why would an image of the brain be obtained during a lung
perfusion scan using Tc99m MAA?
a. rule out brain mets
b. to detect low tagging efficiency
