LRA 222 week 3 Questions and Answers Solved Correctly Latest Update 2025
Main disadvantage of three phase - Answers Cost
Used for most stationary x-ray, CT and mammography machines - Answers High frequency generators
Scatter radiation is primarily the result of - Answers Compton interaction
Two major factors that contribute to scatter radiation - Answers Volume of tissue being irradiated
And higher kvp
Digital IRs are more sensitive to - Answers Lower energy levels of radiation
The unrestricted beam is - Answers Cone shaped
Increased collimation does what to patient dose - Answers Decrease
Decreased collimation does what to scatter radiation - Answers Increase
Increased collimation does what to contrast - Answers Increases
Increased collimation does what to quantum noise if MAs isn't increased - Answers Increases
Beam restricting devices are made of - Answers Metals that readily absorb X-rays
Flat price of lead that has a hole - Answers Aperture diaphragms
Using an aperture results in - Answers Images with unsharp edges
An aperture with an extended attached flange - Answers Cone or cylinder
The best beam restricting devices - Answers Collimators
Auto collimation is also known as - Answers Positive beam limiting device
automatically limits the size and shape of the primary beam
to the size and shape of the RI - Answers Auto collimator
Auto collimator will auto collimate to the size of - Answers The IR
The best way to limit scatter radiation - Answers Grid
A device with thin lead strips that are intended to absorb scatter radiation - Answers Grid
Grids are used with anatomic parts that are - Answers 10cm or greater
The number of grid lines per inch is the - Answers grid frequency
Main disadvantage of three phase - Answers Cost
Used for most stationary x-ray, CT and mammography machines - Answers High frequency generators
Scatter radiation is primarily the result of - Answers Compton interaction
Two major factors that contribute to scatter radiation - Answers Volume of tissue being irradiated
And higher kvp
Digital IRs are more sensitive to - Answers Lower energy levels of radiation
The unrestricted beam is - Answers Cone shaped
Increased collimation does what to patient dose - Answers Decrease
Decreased collimation does what to scatter radiation - Answers Increase
Increased collimation does what to contrast - Answers Increases
Increased collimation does what to quantum noise if MAs isn't increased - Answers Increases
Beam restricting devices are made of - Answers Metals that readily absorb X-rays
Flat price of lead that has a hole - Answers Aperture diaphragms
Using an aperture results in - Answers Images with unsharp edges
An aperture with an extended attached flange - Answers Cone or cylinder
The best beam restricting devices - Answers Collimators
Auto collimation is also known as - Answers Positive beam limiting device
automatically limits the size and shape of the primary beam
to the size and shape of the RI - Answers Auto collimator
Auto collimator will auto collimate to the size of - Answers The IR
The best way to limit scatter radiation - Answers Grid
A device with thin lead strips that are intended to absorb scatter radiation - Answers Grid
Grids are used with anatomic parts that are - Answers 10cm or greater
The number of grid lines per inch is the - Answers grid frequency
