Radiology (correct answers)
Radiograph correct answers the picture formed after the film has been exposed to x-
rays and then processed into a visible image.
X-rays correct answers a type of electromagnetic radiation which have a shorter
wavelength than visible light
Latent image correct answers an invisible image on the x-ray film which becomes visible
after it has been processed in the manual or automatic processor
X-rays correct answers are produced when electrons are slowed down or stopped by
atoms in the target area where they are aimed
X-rays correct answers can cause damage to living cells through the process of
excitation or ionization of electrons in the orbits around atoms
Cathode correct answers has a negative charge
Anode correct answers has a positive charge
Cathode correct answers is the source of electrons
Cathode and anode correct answers has a filament made of tungsten, due to the high
melting point
cathode filament correct answers is located in a focusing cup made of molybdenum
which has a high melting point and helps to direct the electrons produced toward the
cathode
milliamperage correct answers the electrical current sent through the filament to cause
this electron release is called
the higher the mA correct answers the greater the number of electrons released
focal spot correct answers the exact area of the anode that the electrons hit
electrons correct answers when.....collide with the anode, 99% of energy is released in
the form of heat, and 1% of energy is in the form of x-rays
stationary and rotating correct answers what are the 2 types of anodes
stationary anode correct answers they don't move, they're found in dental units and
portable units, cannot withstand the heat produced from large units
, rotating anode correct answers does move, has disks that rotate at high speeds, this
helps spread out the heat that's produced as the electrons hit the focal spot
focal spot correct answers is on the anode and is angled at approximately 20 degrees
from vertical
focal spot correct answers ideally is very small
the sharper the radiograph correct answers the smaller the focal spot
focal spot correct answers x-ray machines come with a set one, we cannot adjust it
effective focal spot correct answers is only 1/3 the size of the actual focal spot
line focus principle correct answers the effective focal spot is only 1/3 the size of the
actual focal spot. this is called the
heel effect correct answers another result of the 20 degree angling
cathode correct answers with the heel effect, more x-rays tend to be in the beam toward
this end of the tube
heel effect correct answers to utilize this, you position the thickest part of the animal
towards the cathode end of the x-ray tube
anode correct answers is to the left, electrons bounce off it at a 20 degree angle
cathode correct answers is to the right, it produces the electrons
collimator correct answers is the device which restricts (narrows) the beam of x-rays as
they leave the x-ray machine
lead cone and adjustable lead shutters correct answers the 2 types of collimators are
light source correct answers within the collimator outlines just how much is collimated
adjustable lead shutters correct answers the type of collimator that we have here
decrease scatter radiation correct answers aluminum filter
decrease scatter radiation correct answers rotating anode
decrease scatter radiation correct answers collimator
milliamperage correct answers is the electrical current that heats the filament
Radiograph correct answers the picture formed after the film has been exposed to x-
rays and then processed into a visible image.
X-rays correct answers a type of electromagnetic radiation which have a shorter
wavelength than visible light
Latent image correct answers an invisible image on the x-ray film which becomes visible
after it has been processed in the manual or automatic processor
X-rays correct answers are produced when electrons are slowed down or stopped by
atoms in the target area where they are aimed
X-rays correct answers can cause damage to living cells through the process of
excitation or ionization of electrons in the orbits around atoms
Cathode correct answers has a negative charge
Anode correct answers has a positive charge
Cathode correct answers is the source of electrons
Cathode and anode correct answers has a filament made of tungsten, due to the high
melting point
cathode filament correct answers is located in a focusing cup made of molybdenum
which has a high melting point and helps to direct the electrons produced toward the
cathode
milliamperage correct answers the electrical current sent through the filament to cause
this electron release is called
the higher the mA correct answers the greater the number of electrons released
focal spot correct answers the exact area of the anode that the electrons hit
electrons correct answers when.....collide with the anode, 99% of energy is released in
the form of heat, and 1% of energy is in the form of x-rays
stationary and rotating correct answers what are the 2 types of anodes
stationary anode correct answers they don't move, they're found in dental units and
portable units, cannot withstand the heat produced from large units
, rotating anode correct answers does move, has disks that rotate at high speeds, this
helps spread out the heat that's produced as the electrons hit the focal spot
focal spot correct answers is on the anode and is angled at approximately 20 degrees
from vertical
focal spot correct answers ideally is very small
the sharper the radiograph correct answers the smaller the focal spot
focal spot correct answers x-ray machines come with a set one, we cannot adjust it
effective focal spot correct answers is only 1/3 the size of the actual focal spot
line focus principle correct answers the effective focal spot is only 1/3 the size of the
actual focal spot. this is called the
heel effect correct answers another result of the 20 degree angling
cathode correct answers with the heel effect, more x-rays tend to be in the beam toward
this end of the tube
heel effect correct answers to utilize this, you position the thickest part of the animal
towards the cathode end of the x-ray tube
anode correct answers is to the left, electrons bounce off it at a 20 degree angle
cathode correct answers is to the right, it produces the electrons
collimator correct answers is the device which restricts (narrows) the beam of x-rays as
they leave the x-ray machine
lead cone and adjustable lead shutters correct answers the 2 types of collimators are
light source correct answers within the collimator outlines just how much is collimated
adjustable lead shutters correct answers the type of collimator that we have here
decrease scatter radiation correct answers aluminum filter
decrease scatter radiation correct answers rotating anode
decrease scatter radiation correct answers collimator
milliamperage correct answers is the electrical current that heats the filament
