X-ray Tube Basics
This part of the x-ray tube emits electrons when heated.
What is the cathode
This type of detector converts x-rays directly into an electrical signal
What is direct digital radiography DR detector
The three basic principles of radiation protection include time, distance, and this.
What is shielding
This exposure factor controls the quantity of x-rays produced.
What is mAs
QA stands for these two words
What is Quality Assurance
This component of the cathode contains the filament
What is the focusing cup
Older computed radiography systems use these reusable plates
What are photostimulable phosphor (PSP) plates
Increasing your distance from the source reduces exposure according to this law.
What is the inverse square law
This exposure factor controls the energy and penetrating ability of the beam
What is kVp
This QA test verifies that the light field matches the x-ray field
What is beam alignment/light field congruence testing
Electrons travel from the cathode to this part of the tube.
What is the anode.
This term describes the detector's ability to record a wide range of exposures
What is dynamic range
This protective space where control panels are found contains this material in the viewing window and walls.
What is lead
This device supplies high voltage to the x-ray tube.
What is the generator
Regular QA helps identify equipment problems before they affect this.
What is image quality
The rotating anode helps prevent this problem
What is excessive heat concentration
This detector characteristic affects image detail and sharpness
What is spatial resolution
This devise monitors occupation radiation exposure.
What is a dosimeter (OSL)
Automatic Exposure Control is commonly abbreviated as this.
What is AEC
This phenomenon can occur when grids are improperly aligned
What is grid cutoff
Most x-ray tube targets are made from this metal because of its high melting point and atomic number.
What is tungsten
In digital imaging, pixels are organized into this structure.
What is a matrix
Radiation exposure should be kept As Low As Reasonably Achievable, known by this acronym.
What is ALARA
AEC terminates the exposure when the image receptor has received a predetermined amount of this.
What is radiation exposure
The purpose of preventative maintenance is to reduce unexpected equipment this
What is failure or downtime