Radio graphic equipment Flashcards
The X-ray room has an area that protects the limited operator from scatter radiation
Control booth
The mechanism on the X-ray tube crane that provides “stop” in a specific location
Detent
Image that has been exposed on the image receptor but hasn’t been processed
Latent image
The absorption of X-ray by matter
Attenuation
The image receptor system may consist of
Cassette and phosphor plate
A line that is perpendicular to the long axis of the X-ray tube and that is in the center of the X-ray
Beam is
Central ray
The device that protects the ir from being fogged by scatter radiation is
Grid or Bucky
The device that allows the limited operator to vary the size of the radiation field
Collimator
The purpose of a safety check performed before making an exposure is
Prevent accidental exposure of co worker
A radiation hazard exist in the X-ray room
Throughout the room during the exposure
A type of filmless X-ray system that produces digital images
Computed radiography
Digital images produced using the CR systems use ___ to process the image
Image reader device
After X-ray have gone into the patient and some have been attenuated the X-ray will exit the patient the exit radiation is now called
Remnant radiation
What should u do before attempting to move X-ray equipment
Release appropriate locks
Where is the collimator located at
On the underside of the X-ray housing
Trendenburg position
Allowing head end to be lowered atleast 15 degree
X-rays projection are done with the patient standing or sitting upright using what device
Upright cassette holder
Primary source of scatter radiation is
The patient
X-ray exit the tube is surrounded by a lead-lined device called
Tube housing
Opening where the X-ray exit the tube
Tube port
Source of the xray
X-ray tube
The X-ray that strikes the patient and travel in all directions, inside and outside the body
Scatter radiation
Unwanted image exposure that is cause by scattered X-rays
Radiation fog
Filmlesse X-ray systems that uses a digital format to produce images
Computed radiography
Receives the energy of the X-ray beam and forms the image of the body part
Image receptor (IR)
X-ray exit the tube port through an opening called
Port
The invisible imaginary line in the center of the X-ray beam that is used for centering is called
Central ray
Milliampere-second (mAs) is a useful unit in radiography because it indicates ?
Total quantity of exposure
Formula for determining mAs
MA x time =mAs
Formula for determining the exposure time is
mAs/ mA=time
The factor that indicates the total quantity of radiation in an exposure
mAs
On the anode the exact area on the focal track that the electrons are striking is called
Focal spot
The anode heel effect states that the primary beam intensity is lower on the_______ side of the radiation field
Anode
Spatial resolution is defined as
The amount of recorded detail on the image
What is the binding energy of the kshell of a tungsten atom
69 KeV
