CORRECT Answers
Xenon is
In which RP is Tc99m left in the valence state of +7
a. sulfur colloid
b. MAA
c. MAG3
d. sestamibi
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
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 pre-
pared, 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
A hine-duley phantom is useful for testing the spatial
resolution and spatial linearity with only one image.
a. true
b. false
the advantage of a lung ventilation scan performed with
, A. Sulfur colloid
B. the tx should be delayed until the platelet ct is at
least60,000
B. 125 mCi/ml
max. 1 ml TcO4- containing 500
mCi500/(1.5+1.5+1) = 125
mCi/ml
B. false
, 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 B. the ability to detect delayed washout
d. the ability to perform perfusion before ventilation with-
out increasing the dose given for the vent study
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is withdrawn for a bone scan.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 C. 2.3 mL
have been withdrawn meanwhile, and the decay factor for
1.5 hrs is 0.841) lots of math, sorry :(
a. 1.5 ml
b. 2.0 ml
c. 2.3 ml
d. 2.5 ml
e. 2.7 ml
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
b. increased patient to detector distance on the ant rela-
to the post
tive to the post
c. low tagging eflciency of the RP
d. patient was not suflciently hydrated
e. none of the above
Which of the following will not reduce the probability of
contamination from perspiration and saliva of a therapy
patient?
a. disposable eating utensils