Conventional
Fluoroscopy
Fluoroscopy
The milliamperage used during fluoroscopy.
What is less than or greater than 5?
The image just preceding contrast.
What is the mask image?
This dedicated unit is used to determine if a patient has osteoporosis.
What is DEXA?
Digital fluoroscopy uses at least this number of monitors.
What is 2?
This x-ray interaction involves the ejection of the K-shell electron.
What is Photoelectric?
Unless otherwise required, during c-arm fluoroscopic procedures the image intensifier is located here.
What is above the patient?
This device increases or decreases voltage.
What is a(n) transformer?
A unit designed for specific imaging procedures.
What is a dedicated unit?
Between the TV camera and the computer of a digital fluoroscopic system.
What is an analog-to-digital converter?
An incident x-ray interacts with an atom without ionization.
What is Coherent scatter?
Vidicon
What is a type of camera tube?
This artifact occurs in IR studies when a patient moves.
What is a misregistration artifact?
The ability of the eye to detect differences in brightness levels.
What is contrast perception?
Semiconductor capacitors are components of the:
What is a CCD?
The two primary forms of x-ray interaction in the diagnostic range.
What is Photoelectric and Comptons?
This part of the image intensifier absorbs light and produces electrons.
What is the photocathode?
This is used to eliminate a misregistration artifact by shifting the mask by one or more pixels so that superimpositon of the images is again obtained.
What is misregistration?
The fixed point that is placed at the level of the anatomic structures to be imaged during tomography.
What is a fulcrum?
Automatic brightness control (ABC) maintains the brightness of the image by varying _____.
What is kVp and mAs?
This occurs only at energies above 10 MeV.
What is photodisintegration?
Before the image intensifier, the fluoroscopist may have worn these to make it easier to see the dim fluoroscopic image.
What are red goggles?
This maintains a constant voltage level in an x-ray circuit.
What is a(n) line compensator?
The T-score from the DXA data analysis indicates:
What is fracture risk resulting from osteoporosis?
This component is found in digital fluoroscopy but not in conventional fluoroscopy
What is an analog-to-digital converter?
Most of a radiographer's radiation dose results from this interaction.
What is Compton scatter?