LRA 222 Final Study Guide Test
Questions and Answers6
The cathode side of the tube should be directed toward the _____ part of the patient. -
ANSWERS-Thicker
The most widely used support structure for the x-ray tube is the ______________. - ANSWERS-
ceiling support system
Tube failure can occur from _______________. - ANSWERS-long exposure times
As an x-ray tube ages, the inside can become coated with tungsten, which can cause _____ in
the tube. - ANSWERS-arcing
The negative side of the x-ray tube holds the ________. - ANSWERS-filament
The filament is made of __________. - ANSWERS-Tungsten
The effective focal spot size is _____________ the actual focal spot size. - ANSWERS-smaller
than
The external structure of the x-ray tube includes the support structure, the protective housing,
and the ___________. - ANSWERS-glass envelope
Thermionic emission at the filament creates a __________. - ANSWERS-space charge
, The target of the rotating anode is usually coated with a ___________ alloy. - ANSWERS-
Tungsten
What is the most common cause of tube failure? - ANSWERS-Tungsten vaporization
The filament in an x-ray tube is about _____ cm in length. - ANSWERS-1-2
When electrons bombard the target, ____% of their kinetic energy is converted to heat. -
ANSWERS-99
When electrons bombard the target, ____% of their kinetic energy is converted to heat. -
ANSWERS-99
The rotating anode is turned by a ____________. - ANSWERS-magnetic field
The cathode side of the tube should be directed toward the _____ part of the patient. -
ANSWERS-thicker
The most widely used support structure for the x-ray tube is the ______________. - ANSWERS-
ceiling support system
Tube failure can occur from _______________. - ANSWERS-long exposure times
The external structure of the x-ray tube includes the support structure, the protective housing,
and the _ - ANSWERS-glass envelope
Localized pitting or cracking on the anode can occur from _____________. - ANSWERS-a single
excessive exposure
Questions and Answers6
The cathode side of the tube should be directed toward the _____ part of the patient. -
ANSWERS-Thicker
The most widely used support structure for the x-ray tube is the ______________. - ANSWERS-
ceiling support system
Tube failure can occur from _______________. - ANSWERS-long exposure times
As an x-ray tube ages, the inside can become coated with tungsten, which can cause _____ in
the tube. - ANSWERS-arcing
The negative side of the x-ray tube holds the ________. - ANSWERS-filament
The filament is made of __________. - ANSWERS-Tungsten
The effective focal spot size is _____________ the actual focal spot size. - ANSWERS-smaller
than
The external structure of the x-ray tube includes the support structure, the protective housing,
and the ___________. - ANSWERS-glass envelope
Thermionic emission at the filament creates a __________. - ANSWERS-space charge
, The target of the rotating anode is usually coated with a ___________ alloy. - ANSWERS-
Tungsten
What is the most common cause of tube failure? - ANSWERS-Tungsten vaporization
The filament in an x-ray tube is about _____ cm in length. - ANSWERS-1-2
When electrons bombard the target, ____% of their kinetic energy is converted to heat. -
ANSWERS-99
When electrons bombard the target, ____% of their kinetic energy is converted to heat. -
ANSWERS-99
The rotating anode is turned by a ____________. - ANSWERS-magnetic field
The cathode side of the tube should be directed toward the _____ part of the patient. -
ANSWERS-thicker
The most widely used support structure for the x-ray tube is the ______________. - ANSWERS-
ceiling support system
Tube failure can occur from _______________. - ANSWERS-long exposure times
The external structure of the x-ray tube includes the support structure, the protective housing,
and the _ - ANSWERS-glass envelope
Localized pitting or cracking on the anode can occur from _____________. - ANSWERS-a single
excessive exposure
