Bushong Midterm Question and
answers correctly solved 2025/2026
The most widely used support structure for the x-ray tube is the ______________. - correct answer
✔ceiling support system
The external structure of the x-ray tube includes the support structure, the protective housing, and the
___________. - correct answer ✔glass envelope
As an x-ray tube ages, the inside can become coated with tungsten, which can cause _____ in the tube. -
correct answer ✔arcing
The negative side of the x-ray tube holds the ________. - correct answer ✔filament
What is the most common cause of tube failure? - correct answer ✔tungsten vaporization
The filament is made of __________. - correct answer ✔Tungsten
Thermionic emission at the filament creates a __________. - correct answer ✔space charge
The rotating anode is turned by a ____________. - correct answer ✔magnetic field
When electrons bombard the target, ____% of their kinetic energy is converted to heat. - correct
answer ✔99%
The target of the rotating anode is usually coated with a ___________ alloy. - correct answer
✔tungsten
, The ___________ is the source of radiation in the x-ray tube. - correct answer ✔focal spot
Because of the line focus principal, the effective focal spot size decreases with decreasing
_____________. - correct answer ✔target angle
High-capacity tube rotors revolve at ______ rpm. - correct answer ✔10,000 rpm
The x-ray intensity is lower on the anode side of the tube because of the _________. - correct answer
✔heel effect
The cathode side of the tube should be directed toward the _____ part of the patient. - correct answer
✔thicker
What is the formula for heat units for a 3-phase, 6-pulse x-ray machine? - correct answer ✔kVp * mA *
seconds * 1.35
Tube failure can occur from _______________. - correct answer ✔long exposure times
The filament in an x-ray tube is about _____ cm in length. - correct answer ✔1 to 2
A dual focus tube has two _______. - correct answer ✔filaments
Each tube has its own tube rating chart to show __________________. - correct answer ✔maximum
exposure times
X-rays are produced with isotropically which means they are with ________ _________ in all directions.
- correct answer ✔equal intensity
answers correctly solved 2025/2026
The most widely used support structure for the x-ray tube is the ______________. - correct answer
✔ceiling support system
The external structure of the x-ray tube includes the support structure, the protective housing, and the
___________. - correct answer ✔glass envelope
As an x-ray tube ages, the inside can become coated with tungsten, which can cause _____ in the tube. -
correct answer ✔arcing
The negative side of the x-ray tube holds the ________. - correct answer ✔filament
What is the most common cause of tube failure? - correct answer ✔tungsten vaporization
The filament is made of __________. - correct answer ✔Tungsten
Thermionic emission at the filament creates a __________. - correct answer ✔space charge
The rotating anode is turned by a ____________. - correct answer ✔magnetic field
When electrons bombard the target, ____% of their kinetic energy is converted to heat. - correct
answer ✔99%
The target of the rotating anode is usually coated with a ___________ alloy. - correct answer
✔tungsten
, The ___________ is the source of radiation in the x-ray tube. - correct answer ✔focal spot
Because of the line focus principal, the effective focal spot size decreases with decreasing
_____________. - correct answer ✔target angle
High-capacity tube rotors revolve at ______ rpm. - correct answer ✔10,000 rpm
The x-ray intensity is lower on the anode side of the tube because of the _________. - correct answer
✔heel effect
The cathode side of the tube should be directed toward the _____ part of the patient. - correct answer
✔thicker
What is the formula for heat units for a 3-phase, 6-pulse x-ray machine? - correct answer ✔kVp * mA *
seconds * 1.35
Tube failure can occur from _______________. - correct answer ✔long exposure times
The filament in an x-ray tube is about _____ cm in length. - correct answer ✔1 to 2
A dual focus tube has two _______. - correct answer ✔filaments
Each tube has its own tube rating chart to show __________________. - correct answer ✔maximum
exposure times
X-rays are produced with isotropically which means they are with ________ _________ in all directions.
- correct answer ✔equal intensity
