7.2
The stationary-anode x-ray tube_______?
Incorporates the line focus principle.
Which of the following target angles is characteristic of a rotating anode x-ray tube?
10 degrees.
The heel effect requires_________?
requires that the cathode be positioned to thicker anatomy.
Which of the following components of a diagnostic x-ray tube is on the positive side of the tube?
The stator.
The heel effect occurs because of______?
X-ray absorption in the anode.
Small target angles result in which of the following?
What is a prominent engineering difficulty in the manufacturing of high-speed rotating anodes?
Balance of the rotor.
as the anode target angle increases, the_______?
Effective focal-spot increases.
Reduce focal spot size.
Molybdenum is used for anode stem material because of which of the following?
It is a poor thermal conductor, has high melting point.
Which of the following is a component of an electromagnetic induction motor?
The stator.
A stationary anode will most likely be used in which of the following?
Dentistry.
Rotating anode x-ray tubes_______?
Incorporate the line focus principle.
Tungsten is the choice material for x-ray anodes because of its________?
High atomic number
Necessary properties of x-ray target material include which of the following?
High melting point.
Which of the following is NOT a function of the anode?
Thermionic emission.
X-ray intensity if higher on the cathode side than on the anode side because of which of the following?
X-ray absorption in the anode.
The effective focal spot is_________?
smaller than the actual focal spot.
Which of the following is an advantage of the rotating anode tube over the stationary anode tube?
Higher heat capacity.
Which of the following is the principle hurdle in the design of an x-ray anode for high-heat capacity radiologic techniques?
heat dissipation.