Final Test CT Scan/ Anatomy
- 1.The main purpose of the slip ring technology is to:
- A.
Increase the number of dectors that can be housed in the gantry
- B.
Make the CT scanning operation quieter
- C.
Allow for continous rotation of the dectors and X-ray tube around the patient
- D.
Reduce the potential for motion artifacts associated with spiral/ helical scanning
- 2.The CT number for water is:
- A.
Varies depending on the type of tissue being scanned
- B.
Should always be near 0
- C.
Is irrelevent to CT scanning
- D.
Needs to be factored into tissues containing alot of water
- 3.____________, pick up and measure the radiation passing through a cross-section of the patiant, convert the transmitted photons into an electrical signal, and then send the signal to the computer system for processing.
- A.
Collimators
- B.
Detectors
- C.
Filters
- D.
Slip Rings
- 4.The gallbladder is located:
- A.
Right upper quadrant
- B.
Left upper quadrant
- C.
Right lower quadrant
- D.
Left lower quadrant
- 5.There are ____ cervical vertebrae?
- A.
5
- B.
6
- C.
7
- D.
8
- 6.The __________ axix is referred to as the sagittal plane.
- A.
X axis
- B.
Y axis
- C.
Z axis
- D.
None of the above
- 7.CT scanners contain what type of collimators:
- A.
Pre patient collimators
- B.
Post patient collimators
- C.
Both pre and post patient collimators
- D.
Automatic collimators
- 8.Thin collimation results in ________ resolution:
- A.
Less
- B.
Better
- C.
Both
- 9.The scan field of view (SFOV) is selected _______ the scan begains
- A.
After
- B.
Before
- C.
During
- 10.The display field of view (DFOV) can be equal to or ________ than the scan field of view?
- A.
Less than
- B.
Greater than
- C.
Same size as the SFOV
- 11.The ________ axis, or the coronal plane divides the patiants body into anterior and posterior sections.
- A.
X axis
- B.
Y axis
- C.
Z axis
- D.
A axis
- 12.Spatial resolution describes the degree of blurring in an image and is a measure of how small an object can be imaged.
- A.
True
- B.
False
- 13.Preprocessed CT data is referrred to as_____
- A.
Raw data
- B.
Image Data
- C.
Display data
- D.
Scan data
- 14.Reconstruction that is performed at a much later time is known as________;
- A.
Multiplaner reconstruction
- B.
Curved reconstruction
- C.
Minimum intensity projection
- D.
Retrospective reconstruction
- 15.The Z axis is called the _______ because it divides the body into superior and inferior parts.
- A.
Coronal Plane
- B.
Z gap
- C.
Axial Plane
- D.
Image Plane
- 16.Acute renal faliure occurs after all IV contrast injections
- A.
True
- B.
False
- 17.CT contrast can be administered via:
- A.
PO, Oral, and Rectal
- B.
Oral, Po, and IV
- C.
Iv, Oral, and Rectal
- D.
Rectal, PO, and oral
- 18.A patient with an allergy to Iodine can still be injected after premedication has been adminstered.
- A.
True
- B.
False
- 19.The ______houses most of the functional equipment parts needed to acquire image data.
- A.
Generator
- B.
Computer
- C.
Gantry
- D.
Table
- 20.Cardiac arrest is classified as a _______reaction:
- A.
Severe
- B.
Minor
- C.
Intermediate
- D.
Death
- 21.The detectors which measure the patiants attenuation data are located _______ the XRay tube.
- A.
Inside
- B.
Under
- C.
Next to
- D.
Opposite
- 22.As the pitch increases the patient moves through the gantry at a _____ rate.
- A.
Faster
- B.
Slower
- C.
Table speed does not change
- 23.As the pitch increases the patiant dose ______.
- A.
Doubles
- B.
Increases
- C.
Stays the same
- D.
Decreases
- 24.Window width (WW) determines the maximun ________ that can be displayed on the CT monitor.
- A.
Pixels
- B.
Number of Images
- C.
Number of shades of gray
- D.
Size of matrix
- 25.A pixel is a ________ element that is assigned a gray value in the form of a ct number.
- A.
Box
- B.
Two- dimensional
- C.
3D
- D.
Small
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