Digital Test 3

An increase in patient size will increase distortion

Increasing the kVp will increase the contrast on an image

Patient motion has no effect on spatial resolution

The variation in brightness on a digital image describes the:

Decreasing kVp will increase contrast on the digital image

The amount of luminance on a display (computer) monitor is referred to as:

The way to reduce quatum noise on an image is to increase the mAs

When changing from small to large focal spot the exposure to the IR will increase

_______ is a universal standard value that reflects the difference between the desired exposure to the actual exposure

Decreasing the SID would decrease the spatial resolution

An image would have higher contrast if there was an increase in the grid ratio

Inverse square law - Initial intensity 50mR, initial distance 72", new distance 40", what's the new intensity?

Changing the collimation from a 10X12 to an 8X10 would ______ brightness and ______contrast

Increased patient thickness decreases contrast

15% rule - Initial kVp 80, initial mAs 40, new kVp 92, what's the new mAs?

If the mAs is 20 and the mA equals .5 what would the S (time) equal

If a 8:1 grid was used and the mAs was 20, what mAs would you use to get the same exposure if the grid was removed?

Increasing CR angulation will increase distortion

When using a DR detector, changing from 72" to 40" would result in ______ brightness and _____ in contrast.

A numerical value indicating the level of exposure to the digital IR is called:

If the patient thickness decreases the contrast would decrease

Decreasing the OID will increase the spatial resolution

Increasing OID will increase distortion

Adding a grid will decrease the amount of exposure reaching the IR

Decreasing the SID will decrease size distortion

When changing from large to small focal spot, the result would be an ______ in density and _____ in spatial resolution

A decrease in collimation will decrease the exposure to the IR

The number of shades of gray that can be displayed on a computer monitor is referred to as:

Decreasing the grid ratio would improve an image that demonstrates quantum noise

mAs distance formula - Initial mAs is 10, Initial SID is 40", New SID is 72" what is the new mAs?

If you would decrease the grid ratio it would decrease the spatial resolution

Random Trivia! Where was tea invented?

Increasing the SID will increase spatial resolution

Increasing beam restriction does what to spatial resolution?