Chapters 1-8, 11&12
Card Set Information
Chapters 1-8, 11&12
Midterm 1 review
This is the energy carried by waves or a stream of particles
This is a method of transporting energy through space
This is a form of electromagnetic radiation similar to visible light but with a shorter wavelength
This refers to a number of x-rays traveling together through space at rapid speed
List the physical properties of X-rays
1. Variable wavelength dependent on radiation
2. Travel in a straight line
3. Penetrate materials that absorb/reflect visible light
4. Cause some materials to fluoresce after exposure
5. Cause biological changes in living tissues
6. Produce an invisible image on photographic film
Who discovered X-rays?
In what year were X-rays discovered?
What city in Germany did Roentgen make the discovery of X-rays?
In what year did Roentgen receive the Nobel Prize?
What is the nickname for X-rays?
This is the positively charge electrode that acts as a target for the electrons from the cathode and produce heat and x-rays
This is the number of protons in an atom's nucleus
This is the negatively charged electrode that provides a source of electrons
Name two terms that a bundle of radiant energy is called.
This refers to a visible photograph record on film produced by x-rays passing through an object
This is the process in which an electron is moved to a higher energy level within the atom
This is the process in which an electron is removed from the atom leaving it positively charged
Name rays from the shortest to the longest wavelengths
TV and radar
This is the phenomenon in which metal deposits on the inner wall of the envelope act as a secondary anode attracting electrons
This is the part that acts as the kilovoltage selector by providing voltage to the high-step transformer.
This is the restricting device use to control the size of the primary x-ray beam
This releases electrons from their orbits as apart of a low-energy circuit in the cathode.
This is the small area of the target where the electrons collide on the anode
This is the recessed area where the filament lies directing the electrons toward the anode
This is the tube that contains the anode and the cathode
This refers to the amount of electrical energy being applied to accelerate electrons from the cathode towards the anode
Kilovoltage = 1000V
This is the maximum energy of the x-rays which determines the quality of the x-ray beam and often referred to as the penetrating power.
Kilovoltage peak (kVp)
This is the amount of electrical energy being applied to the filament on the cathode and describes the number of xrays produced at exposure.
This is the metal the focusing cup is composed of with a high melting point and poor heat conductivity.
This part reduces the x-ray machines input voltage from 110V to 10V to prevent burnout of the cathode filament
This part increases the incoming voltage of 110V to Kilovoltage in the anode
This is the metal that has a 3370 C melting point, high atomic number and most commonly used to make the filament of a cathode
Name two types of anodes
Rotating - 3350 rpm
This metal has very good heat conduction and composes the anode
What is the size of the focal spot?
What is the target made out of and how much heat can it withstand?
tungsten - 1000 C
This is the variation of intensity of the primary x-ray beam
What is the purpose of surrounding the glass envelope with oil?
What is the primary limitation of a stationary anode?
inability to withstand large amounts of heat
What is the primary limitation of a rotating anode?
What is the most common cause of x-ray tube failure?
This preheats the filament to a low temperature when place in the "on" position.