Ct Tutor Exam 2 Wrong Answers Flashcards
The position of the seminal vesicles in the male pelvis should be located…
Posterior to the bladder and anterior to the rectum.
Which generation of scanners employs multi-row detector technology?
Third-generation

Right external iliac artery
Which factor(s) has no measurable effect on the spatial resolution?
- kVp
- Focal spot size
- Detector sampling frequency
- Matrix size
1 only
Normal GFR range
90 to 120 mL/min/1.73 m2

Right pulmonary artery
o reconstruct an image a second time with some change in technical factor is called ________________.
Retrospective
Which of the following are part of the CT tube?
Filament
Array processor
Collimator
Detectors
Filament
Which of the following is/are considered examples of a mild reaction to iodinated intravenous contrast media?
- Shock
- Pulmonary edema
- Vomiting
- Dyspnea
1 only
1 and 2 only
3 only
3 and 4 only
3 only
What is indicated by the arrow in the image?

Ascites

Internal carotid artery

Superior vena cava
A child’s pulse is
70-120
The limiting resolution of a CT scanner is 15 lp/cm, what is the smallest object size that can be resolved?
- 1 mm
- 3 mm
- 6 mm
- 0 mm
0.3 mm
To find the minimum object size that a CT scanner can resolve, the reciprocal value of the limiting resolution of the scanner must be calculated. The reciprocal of 15 lp/cm = 1/15 lp/cm. This is equal to 10/15 lp/mm which is equal to 0.6 mm/lp. 0.6 mm/lp is divided in half to account for a line pair being a line and the space adjacent to it. This scanner can resolve an object 0.3mm in size.
X-ray production in CT is produced using a high-frequency generator to produce the tube voltage across the tube cathode and anode.
True
False
False
the high voltage (not “frequency”) generator produces the tube voltage across the tube cathode and anode.
The average values for PT are between
10 to 14 seconds

Left internal iliac artery
The drug known as Solu-Cortef may be classified as a…
Bronchodilator
Anticholinergic
Antihistamine
Corticosteroid
Corticosteroid
Gas accumulating within a degenerating intervertebral disk is termed…
Vacuum phenomenon
The two events that produce x-ray photons (Bremsstrahlung radiation) useful in CT imaging result from the loss of kinetic energy from the incoming electron.
True
False
True

Dirty fat inflammation
Corticosteroids are a type of hydrocortisone used during the treatment of anaphylactoid reactions to iodinated contrast materials.
True
False
False
Bremsstrahlung radiation is the type of interaction that produces the x-ray photons used in CT imaging. Which of the following types of electron activity does NOT result in Bremsstrahlung radiation?
- A collision between the incoming electron and the nucleus of the target atom.
- A collision between the incoming electron and an electron in an inner shell of the target atom.
- A slowing down of an incoming electron resulting from passing close to the positive charge of the target atoms nucleus.
1 only
2 only
3 only
1, 2, and 3
2 only
Solid-state detectors ionize in response to an x-ray conversion resulting in a flash of light which is converted to an electrical signal.
True
False
False
Xenon ionizes in response to an x-ray conversion, solid-state detectors generate a flash of light which is converted to an electrical signal by means of a photodiode.


