patient care 7 and 8 Flashcards
The X-Ray beam comes out of the ______.
Port
What is the glass around the tube called?
Pyrex Glass
What is another name for the X-ray tube?
Tube Housing
What do we refer to the lab as?
Radiographic Room
What are the 2 Primary components of the X-Ray tube?
Anode and Cathode
Where does the collimator lie?
Below the tube
There are ____ _____ ______ at each end of the tube.
High Voltage Cables
The collimator controls the ____ and ____ of the field size.
Size and Shape
The X-ray tube is held from the ceiling by a ____.
OTC (overhead tube crane)
Which end of the tube is positive?
Anode
A hard surface table is designed for ____.
Radiographers
Who invented the bucky tray?
Gustave Bucky
The X-Ray table must be easy to clean for _____________ purposes.
Infection Control
What must the X-ray tube stay aligned with?
Bucky
The _____ _______ is where the RT make the technique selection.
Control Console
What are the three technique selections?
kVp, mA, time
What type of equipment takes a ‘real time’ image?
Fluoroscopy
If Fluoro is live then _______ is being produced.
Radiation
Who is allowed to operate the fluoro machine?
Radiologist
A good X-ray can also be called _____.
Good Diagnostic image
When an X-ray has to be repeated it is called _______?
non-diagnostic image
What are the 4 requirements to produce an X-ray?
- Vacuum
- source of electrons
- Rapid acceleration of electrons by applying voltage
- a target to stop the moving electrons
What is the X-ray leaving the tube called?
X-ray photons or X-ray beam
The photons/beam before it reaches and interacts with the patients body is called _____.
Primary Radiation
What is the beam that exits the body called?
Remnant Radiation
If the beam interacts with the body matter and changes direction, it is called ______ ________?
Scatter Radiation
________ is described as not easily penetrable by x-rays or other forms radiant energy.
Radiopaque
Permitting the passage of x-rays or other forms of radiant energy with little attenuation is called _________?
Radiolucent
_____ and _____ will determine if your image is acceptable.
mAs and kVp
What controls the quantity of photons produced?
mAs
How is mAs calculated?
mA x time (seconds)= mAs
What prime factor is in charge of sending electrons from the cathode to anode side?
kVp
______ controls the penetrating ability of the beam and primarily affects the quality but also the quantity of the x-ray photons produced.
kVp
What is the distance betweEn the point of x-ray emission in the x-ray tube and the IR?
SID
Cassette based digital radiography; the digital acquisition modality that uses storage phosphor plates to produce images.
CR (computed radiography)
Cassette-less image receptor systems that connect x-ray energy into the digital electronic signal for manipulation and display.
DR (digital radiography)
____ is described as how dark your image is on the monitor.
IR exposure
The difference between IR exposures on a radiographic image is _______.
Contrast
Image manipulation parameter that changes image contrast on the display monitor, usually through the use of a mouse.
Window Width
What is the technical factor controlling IR exposure?
mAs
What technical factor controls contrast?
kVp
What contrast has few gray tones
High Contrast
What contrast has high kVp value?
Low contrast
What contrast is Long-scale contrast?
Low contrast
What contrast has narrow exposure latitude?
High contrast
What contrast has low kVp values?
High contrast
What contrast is short-scaled contrast?
High contrast
what contrast has wide exposure latitude?
Low contrast
What contrast goes from white to black quickly?
High contrast
Which contrast if for larger body parts?
Low contrast
Which contrast is for smaller body parts?
High Contrast
What decreases the amount of scatter radiation reaching the IR, which improves image quality increases contrast?
Bucky mechanism
X-ray tables are _____ and moveable in any combination of two directions.
Radiolucent
