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X-ray tube (1)

QuestionAnswer
Which term refers to the primary radiation used to form image? Useful beam
Which term is used to denote the decreased x-ray intensity at anode end of the X-ray tube? Heel effect
Which portion of the X-ray tube is the negatively charged metal shroud that surrounds the filament? Focusing cup
Unit of measurement for electric current? Ampere
Which part of the X-ray tube undergoes thermionic emission? Filament
An x-ray beam is heterogenous, this means? The beam consists of different levels
Which is the part of the cathode? Stator, target, filament, window? Filament
Which control the OD of a radiographic image? mAs
In an x-ray circuit which of the following is true? kVp is controlled by the auto transformer, mA is controlled by the filament transformer 1&2
The measure of the quantity of electrical current flowing through a circuit is called? mAs
Exit for x-rays from the housing? Tube port
Area of the x-ray beam that strikes the patient? Radiation field
Triangular shape X-ray beam
The anode is the____side of the X-ray tube? Positive
The thin section of a glass envelope, or window, is where the_____are emitted. useful beam
From what metal are the filament wires radiographic tubes made? Tungsten
Spatial resolution is principally affected by which of the following. Focal spot sized
The reduction of focal spot size can be accomplished by : Using a smaller filament
The degree of angular of the X-ray tube target will determine the: : Size of the actual and effective focal spot
The purpose of rotating the anode of the X-ray tube is to: Increase the heat capacity of the anode
To maximize the anode-heel effect, the portion of the femur should be placed: Under the cathode side of the x-ray tube
The line focus principle states that angling of the x-ray target allows for a larger area of heating(or the effective area) while maintaining a small focal spot(or the actual area). T/F False
To acquire greater detail you should use a small focal spot. T/F True
In the diagnostic range, bremsstrahlung radiation constitutes most of the x-ray beam. T/F True
X-rays carry a negative charge that causes ionization. T/F False
Which type of grid has grid strips angled to align with beam divergence? Focused
Primary purpose is to supply current to the X-ray tube for thermionic emission. Filament circuit
Primary purpose is to supply the X-ray tube with enough voltage to create x-rays. High voltage circuit
Which are imaging system characteristic that affect the primary x-ray beam? Generator type and filtration
Which of following is located in an orbit around the nucleus of an atom? Electron
Penetrability is an expression of x-ray quality and conveys the ability of x-rays to pass through tissues. T/F True
The radiography does not include understanding how to set a control panel. T/F False
In a modern rotating anode, the rotator motion is accomplished by the used of a/an: Induction motor
In order to prevent the movement of electrons from the anode to the cathode during the exposure cycle, the type of current employed for X-ray tube is: Direct current
Which of the characteristics of tungsten that make it the material of choice for x-ray High atomic number, good thermal conductivity and high melting point.
The negative side of the x-ray tube Cathode
The portion of the induction motor that is outside of the enclosure is the: Stator
The purpose of the focusing cup is to: Keep the electron together
When the x-ray are produced inside the tube they travel In all directions T/F True
When the electrons strike the anode target, they all produced x-rays T/F False
The cloud of electrons produced through thermionic emission is more accurately called Space charge
The stationary anode includes an area of tungsten embedded in a? Copper rod
What happens to the majority of interactions between filament electrons and the target material They produced heat
Created by: Faithshay
 

 



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