Chapter 68 - Radiography Flashcards
What condition might cervical spinal radiographs suggest in ataxic horses?
Spinal cord compression
Which imaging technique is particularly sensitive for detecting large colon enteroliths?
Digital abdominal radiographs
What component of the x-ray tube is responsible for emitting x-rays?
Anode
What is the term for the area on the anode that is struck by electrons?
Focal spot
Which factor is adjusted to change the number of x-rays produced?
Milliampere (mA)
Exposure time (s)
What is the main advantage of fast intensifying screens in radiography?
Higher sensitivity to x-rays
Which digital radiography system uses photostimulable phosphors?
Computed radiography
Which setting controls the maximum energy of the electrons accelerated in an x-ray tube?
kVp
What happens to the latent image on photostimulable phosphors over time?
It disappears
What is the purpose of collimating the primary x-ray beam?
Reduce radiation exposure
What can radiography diagnose in the lumbar spine?
Degenerative lesions
What is an important aspect to consider when using screen-film radiography?
Processing must be precise
Which imaging technique may be required to confirm abnormalities found in cervical spinal radiographs?
Myelography
Which type of radiographic film is most suitable for high-detail examinations?
Slow/detail systems
What is the main advantage of digital radiography over screen-film systems?
It allows for post-exposure image manipulation
How does the housing of the x-ray unit contribute to safety?
It is lead shielded to protect operators
What is the role of the intensifying screen in screen-film radiography?
To convert x-rays into visible light
What must be done to the PSP after it has been used to capture an image?
To convert x-rays into visible light
Which body region is typically more challenging to radiograph?
Thoracolumbar spine
What is the effect of using a high mAs setting in radiography?
Increased exposure time
Which factor influences the resolution of an x-ray image?
A) Cathode type
B) Focal spot size
C) Film speed
What do higher kilovoltage (kVp) settings provide in x-ray imaging?
More x-ray penetration
What is the primary function of flat-panel detectors (FPDs) in digital imaging?
To convert x-ray energy into an electronic signal
What file format is standard for medical imaging data?
DICOM