NMTCB Practice Exam - New book
Questions and Answers
In which RP is Tc99m left in the valence state of +7
a. sulfur colloid
b. MAA
c. MAG3
d. sestamibi - ANSWER-A. Sulfur colloid
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Immediately, a 20 mCi dose is withdrawn for a bone scan.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withdrawn meanwhile, and the decay factor for 1.5 hrs is 0.841)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
c. to detect a R-L cardiac shunt
d. to see if pulmonary emboli have traveled into the cerebral arteries - ANSWER-c. to
detect a R-L cardiac shunt
Questions and Answers
In which RP is Tc99m left in the valence state of +7
a. sulfur colloid
b. MAA
c. MAG3
d. sestamibi - ANSWER-A. Sulfur colloid
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
c. to detect a R-L cardiac shunt
d. to see if pulmonary emboli have traveled into the cerebral arteries - ANSWER-c. to
detect a R-L cardiac shunt
