A false positive In-111 WBC scan may be due to increased
abdominal uptake in a patient:
a. that is currently taking antibiotics
b. with a sinus infection B. Sinus Infection due to sinus drainage
c. with a stomach ulcer
d. with a renal cyst
e. with cholecystitis
A patient receives 285uCi of I-123 NaI orally for a thyroid
uptake study. Calculate the 24 hour percent uptake using
14%
the given data:
Dose Count= 1425916 cpm
(neck-thigh)(100)/(capsule-BKG)
Background= 88 cpm
(193046-473)(100)/(1425919-88)
Patient counts= 193046 cpm
Patient Background count= 473 cpm
The image was obtained while performing a WBB scan
on a 62 year old male, the most probable reason for the
B. Trauma to chest wall
appearance on the image is:
a. metastatic disease
(metastatic will appear sporadically, pagets will show in-
b. trauma to chest wall
crease brain, femur, and pelvis. Trauma is usually dis-
c. localized osteoporosis
played as a pattern)
d. osteomyelitis
e. Paget's disease
You are receiving a completed MPI pharmacologic study
which of the following descriptions suggest that the pa-
tient has a myocardial infarction?
a. abnormal resting Tc99m tetrofosmin, normal stress D. Both resting and stress will appear abnormal to indicate
Tc99m tetrofosmin an infarction
b. abnormal resting MIBI, normal stress Tl-201 Thallium
Cl
c. normal resting Tc MIBI, normal stress Tl201
, d. abnormal resting Tl201, abnormal stress Tc MIBI
e. Abnormal stress Tl201, normal redistribution Tl201
Which electron transition process involves monochromat-
ic incident X-ray yeilding a photon and other electron's Characteristic X Ray Production
conservation of energy by moving shells?
753 dpm
How many dpm will yield a count rate of 640 cpm when E=C/A
measured by a detector with a counting eflciency of 85%? A= 640cpm/0.85 =753
E=cpm/dpm
Proper patient transfer technique includes all of the fol-
lowing except:
a. letting the patient help as much as possible
b. maintaining a wide base of support
C. Center of gravity should be close together
c. having the patient's center of gravity away from your
COG
d. using muscles of the arms and legs for lifting
e. getting help when it is needed
prior to performing an oncology PET/CT scan, the patient
height and weight is recorded in order to assist in the
circulation of
a. CTDI
D. standard uptake value
b. EF
c. CO
d. SUV
e. CTAC
If tracer concentration is visualized in the skeleton, kid-
neys, and liver on a WBB scan the most likely explanation
for these findings is that:
a. imaging was performed too soon following tracer ad-
min
, b. the radiopharm contained excess free Tc
c. the patients renal function is compromised e. excess alumina will cause hydrolyzed reduced Tc build
d. the incorrect radiopharm was administered up in the elution and cause artifacts on WBB images
e. there is excess alumina in the generator eluate
Which of the following image findings is most consistent
with chromatography results of a Tc SC kit demonstrating
90% radiopharm purity?
a. thyroid uptake A. thyroid uptake, 92% is the radiopharm purity required
b. bone uptake for SC kits and free Tc will localize in the thyroid naturally
c. lung uptake
d. gallbladder activity
c. kidney uptake
The results shown below were obtained when the Tc99m
eluate was assayed for Mo99 breakthrough at 0600, im-
mediately following elution
Mo99 10uCi
Tc99m 416mCi
C. The eluate may be used to label compounds with
which of the following statements is true about this elution
Tc99m.
at 1700?
(decay activity of Mo99 AND Tc99m, solve as ratio:
a. The eluate should not be used to label compounds with
Mo99/Tc99m...
Tc99m
<0.15uCi Mo99/1mCi Tc99m
b. The eluate does not contain suflcient Tc99m activity
c. The eluate may be used to label compounds with
Tc99m
d. The eluate must not be administered to patients
e. The eluate contains too much Mo99 activity
According to NRC regulations, which of the following
signs should be posted on the door of a radiopharmacy
lab in which radiation levels have been measured to be c. rad area (LOOK UP LEVELS)
12.0mrem/hr?
a. no posting of this area is required