Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
Which of the following is not part of correction calibrations?
a. | coincidence timing calibrations | c. | blank scan | b. | absolute activity
calibration | d. | normalization
calibration |
|
|
|
2.
|
Which of the following is the problems with PET scanner?
i Power
supply drift or failure
ii Temperature drift or cooling system failure
iii Coincidence
timing malfunction
iv Septa mispositioning
a. | i, ii, iv | d. | all of the above | b. | i, iii, iv | e. | ii, iii, iv | c. | i, ii,
iii |
|
|
|
3.
|
Which of the following is the characteristics of Germanium?
i The
symbol for Germanium is Ge.
ii The atomic number of it is 31.
iii The crystal structure
of a germanium is cubic.
iv The number of neutrons is 41.
a. | i, iii, iv | d. | all of the above | b. | i, ii, iv | e. | ii, iii, iv | c. | i, ii,
iii |
|
Matching
|
|
|
a. | Absolute activity calibration | d. | Normalization
calibration | b. | Coincidence timing calibration | e. | Broad diagonal bands | c. | Blank
scan | f. | Gain
update |
|
|
|
4.
|
______ adjust for the timing differences in the event detection
circuitry.
|
|
|
5.
|
______ are done to provide accurate transmission scan data for the attenuation
correction.
|
|
|
6.
|
______ in a blank scan means PMT problems are present or signal is lost forma
module.
|
|
|
7.
|
______ is performed by rotating radioactive rod sources and acquiring data that
will be used to balance the efficiency of all detectors in the scanner.
|
|
|
8.
|
______ is used to convert pixel values into a measure of absolute activity per
voxel.
|
|
|
9.
|
______ should be done at least weekly or even daily to prevent sensitivity
drift.
|
|
|
a. | Diuretics | d. | Anticoagulants | b. | Antiplatelet agents | e. | Beta Blockers | c. | Digitalis
preparations |
|
|
|
10.
|
______ increase the force of the heart's contractions, which can be
beneficial in heart failure and for irregular heart beats.
|
|
|
11.
|
______ used to decrease the clotting ability of the blood.
|
|
|
12.
|
______ used to lower blood pressure and used with therapy for cardiac
arrhythmias.
|
|
|
13.
|
______ used to lower blood pressure and reduce swelling from excess buildup of
fluid in the body.
|
|
|
14.
|
______ help prevent blood platelets from sticking together such as
aspirin.
|
True/False
Indicate whether the
statement is true or false.
|
|
|
15.
|
Advantage of LSO and GSO scintillators are their relatively fast light decay
time and high light yield.
|
|
|
16.
|
The quality of the contrast bolus in patients with low cardiac output may
improve image quality.
|
|
|
17.
|
PET quality control can be separated into 2 types: characterization calibration
and correction calibration.
|
|
|
18.
|
For imaging vascular structures, additional respiratory gating may be required
to correctly localize vascular activity and to improve the coregistration of PET and CT
information.
|
|
|
19.
|
Measurements of radiation exposure in oncologic whole-body 18F-FDG PET/CT
examinations showed an effective dose of 14-18 mSv from the contrast-enhanced diagnostic CT scan
covering the whole body.
|
|
|
20.
|
The use of endothelial dysfunction as a possible biomarker for active CAD is
further supported by the notion that inflammatory processes not only are present in the area of
plaque rupture but also involve much larger parts of the coronary vascular tree.
|
|
|
21.
|
An aggressive , comprehensive QC program is needed to reduce artifacts, increase
uptime and produce higher quality images.
|
|
|
22.
|
The polar map provide a standardized and widely accepted way of displaying 3D
ventricular structures in 3 dimensions.
|
|
|
23.
|
Coronary calcification is one of the first biomarkers identifying
arteriosclerotic coronary lesions.
|