TBR-CT - Training From The BACK Of The Room Certified Trainer
TBR-CT - Training from the BACK of the Room Certified Trainer
Exam (elaborations)
CT midterm Questions and Answers 100% Solved
0 view 0 purchase
Course
TBR-CT - Training from the BACK of the Room Certified Trainer
Institution
TBR-CT - Training From The BACK Of The Room Certified Trainer
Exam of 35 pages for the course TBR-CT - Training from the BACK of the Room Certified Trainer at TBR-CT - Training from the BACK of the Room Certified Trainer (CT midterm)
What is the name for each two-dimensional square in a CT slice?
a. pixel
b. matrix
c. cross-section
d. cube - answera. pixel
How are metals represented on a CT image?
a. As white areas
b. As black areas
c. As grey areas - answer a. As white areas
In which part of the CT process are the data converted into shades of gray for viewing?
a. Data acquisition
b. Image reconstruction
c. Image display - answerc. Image display
What are image artifacts?
a. Substances used to create a temporary artificial density between objects
b. Objects seen on a CT image that are not present in the object scanned
c. The data that form the CT slice
d. The photons in an x-ray beam - answerb. Objects seen on a CT image that are not
present in the object scanned
What are used to quantify the degree that a structure attenuates an x-ray beam?
a. Attenuation coefficients
b. Pixels
c. Contrasting agents
d. Hounsfield units - answerd. Hounsfield units
What can be used to create a temporary artificial density difference between two objects
on a CT image?
a. Low-energy x-ray photons
b. High-energy x-ray photons
c. Contrast agents
d. Artifacts - answerc. Contrast agents
,What determines the number of detector elements?
a. The cooling system
b. The slip rings
c. The gantry
d. The fan beam - answerd. The fan beam
What determines the shades of gray on a CT image?
a. Air-filled structures
b. The quantity of x-ray photons
c. The thickness of the CT slice
d. The scanning protocol - answerb. The quantity of x-ray photons
What do current systems use to rotate the gantry frame?
a. Recoiling system cables
b. Collimators
c. Slip rings
d. Detectors - answerc. Slip rings
What does the source collimator do?
a. It limits the amount of x-ray emerging to thin ribbons.
b. It cools the imaging components.
c. It captures transmitted photons and changes them to electronic signals.
d. It ionizes Xenon gas. - answera. It limits the amount of x-ray emerging to thin ribbons.
What is an overscan?
a. A tube arc greater than 360°.
b. A thin x-ray beam passed linearly over the patient.
c. The occurrence of ring artifacts.
d. Streaking on the CT image. - answera. A tube arc greater than 360°.
What is another name for incrementation?
a. feed
b. repositioning
c. detection
d. overscan - answera. feed
What is another name for solid-state detectors?
a. Apertures
b. Detector array
,c. Scintillation detectors
d. Detector bank - answerc. Scintillation detectors
What is the most common matrix size in CT?
a. 128
b. 256
c. 512
d. 1024 - answerc. 512
What is another name for step-and-shoot scan mode?
a. Spiral
b. Volumetric
c. Helical
d. Axial - answerd. Axial
What is density?
a. The number of photons that pass through a structure
b. The degree to which an x-ray beam is reduced by an object
c. The degree to which matter is concentrated
d. The amount of x-ray beam that is absorbed per unit of thickness - answerc. The
degree to which matter is concentrated
What is the name for the area of the anode where the electrons strike and the x-ray
beam is produced?
a. gantry
b. focal spot
c. space cloud
d. reconstruction processor - answerb. focal spot
What is the name of the process in CT by which different attenuation values are
averaged to produce one less accurate pixel reading?
a. Volume averaging
b. Pixel averaging
c. Z axis averaging
d. Image averaging - answera. Volume averaging
What is the primary reason for changing the image plane from axial to coronal?
a. To eliminate volume averaging
b. To attenuate the x-ray beam
c. The anatomy of interest lies vertically rather than horizontally
, d. To reduce artifacts created by surrounding structures - answerc. The anatomy of
interest lies vertically rather than horizontally
What is the range of aperture size for a gantry?
a. 60 cm - 70 cm
b. 70 cm - 90 cm
c. 70 cm - 80 cm
d. 90 cm - 100 cm - answerb. 70 cm - 90 cm
What is the term for the ability of an x-ray tube to withstand resultant heat?
a. Kinetic energy
b. Heat dissipation
c. Heat capacity
d. Thermal energy - answerc. Heat capacity
What is the unit of measure for the power capacity of the generator?
a. kW
b. HU
c. MHU
d. KHU - answera. kW
What is the thickness of a cross-sectional CT slice called?
a. X axis
b. Y axis
c. Z axis
d. Q axis - answerc. Z axis
What measures the number of photons that strikes the detector, converts the
information to a digital signal, and sends the signal to the computer?
a. A solid-state detector array
b. The data-acquisition system
c. An Xenon gas detector array
d. High-frequency generators - answerb. The data-acquisition system
Which directional term refers to movement towards the feet?
a. Inferior
b. Anterior
c. Posterior
d. Superior - answera. Inferior
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
