1 ml of a liquid is assayed and contains 206 mCi. if it is diluted with 9 ml and subsequently is
assayed at 180 mCi, what is the geometric correction factor?
a. 0.75
b. 0.87
c. 0.96
d. 1.14
e. 1.20 - CORRECT ANSWER -d. 1.14
206/180 (expect over have)
A diphosphonate kit contian 180 mCi of...
NMTCB Practice Exam New book Quizzes With
Correct Solutions Graded A+ Pass 100%
1 ml of a liquid is assayed and contains 206 mCi. if it is diluted with 9 ml and subsequently is
assayed at 180 mCi, what is the geometric correction factor?
a. 0.75
b. 0.87
c. 0.96
d. 1.14
e. 1.20 - CORRECT ANSWER ✔✔ -d. 1.14
206/180 (expect over have)
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Immediately, a 20 mCi dose is withdrawn for a bone scan.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 (no other doses have been withdrawn meanwhile, and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 - CORRECT ANSWER ✔✔ -C. 2.3 mL
lots of math, sorry :(
A hine-duley phantom is useful for testing the spatial resolution and spatial linearity with only
one image.
a. true
b. false - CORRECT ANSWER ✔✔ -B. false
A locked storage closet next to the radiopharmacy containing phantoms and sealed sources has a
measured exposure rate of 3 mR/hr. It should be posted with a sign reading:
a. Caution: radioactive materials
b. Caution: radioactive area
c. Caution: high radiation area
d. Grave danger: very high radiation area
e. no sign necessary - CORRECT ANSWER ✔✔ -A. caution, radioactive materials
a Mo/Tc generator has an elution efficiency of 89%. if 1.1 Ci of Tc is present on the column,
what is the estimated activity of eluate that will be obtained?
a. 97.9 Ci
b. 979 mCi
c. 979 uCi
,d. 97.9 mCi - CORRECT ANSWER ✔✔ -b. 979 mCi
a pt with high blood pressure undergoes renography followed by captopril renography, and the
curve of renal uptake from the second exam is lower than the first. What does this mean? The
patient:
a. is rejecting a transplanted kidney
b. has renovascular htn
c. has an obstruction in the collecting system
d. has high blood pressure
e. none of the above - CORRECT ANSWER ✔✔ -b. has renovascular htn
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 - CORRECT ANSWER ✔✔ -B. 125 mCi/ml
max. 1 ml TcO4- containing 500 mCi
500/(1.5+1.5+1) = 125 mCi/ml
, A sentinel node is:
a. the first draining lymph node from a primary cancer
b. the node containing cancer from which is most distant from the primary tumor site
c. the common iliac node
d. always ipsilateral to the tumor - CORRECT ANSWER ✔✔ -a. the first draining lymph node
from a primary cancer
a SPECT study is required to consist of 2 mil counts. If there are 64 stops and the count rate is
65,000 cpm, how many seconds should each stop last?
a. 13 s
b. 21 s
c. 29 s
d. 31 s
e. 48 s - CORRECT ANSWER ✔✔ -c. 29 s
2 mil cts/ 64 stops = 31,250 cts/stop / 65000 cts/min = 0.48 min/stop x 60 sec/min = 28.5 s
a superscan is the result of:
a. renal insufficiency
b. diffuse skeletal mets
c. chemotherapy response
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