Exam 9: Image Evaluation

Using a Konica digital imaging system,if an image's S number is 600 while the optimal range ends at 300,this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

In order to produce a radiographic image with structural lines as accurate as possible,you must maximize the spatial resolution and distortion.

Assuming no other changes are made,which of the following would result in increased quantum noise in a digital image? 1)Decreasing mAs 2)Increasing kVp 3)Imaging a thicker part

Using an Agfa digital imaging system,if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM,this means that the IR was ______________ and the exposure to the IR needs to be ___________________ .

Which of the following changes would produce a digital image with decreased brightness?

A digital image with higher contrast may be due to: 1)Decreased kVp 2)Increased grid ratio 3)Decreased patient thickness

A film-screen image with lower contrast may be due to: 1)Increased patient thickness 2)Increased beam restriction 3)Increased kVp

When using a digital imaging system,changing from 40 in SID to 72 in SID would result in _____________ brightness and ____________ contrast.

When using a film-screen imaging system,changing from small to large focal spot size would result in _____________ density and ____________ recorded detail.

Which of the following would reduce quantum noise in a digital image? 1)Decreasing mAs 2)Increasing mAs 3)Changing to a lower ratio grid

A film-screen image with increased recorded detail may be due to: 1)Increased SID 2)Decreased focal spot size 3)Decreased film-screen speed

Artifacts are detrimental to radiographs because they can make the visibility of anatomy,pathologic conditions,or patient identification information difficult or impossible.

A digital image with decreased spatial resolution may be due to: 1)Increased central ray angulation 2)Decreased grid ratio 3)Decreased SID

The variation in brightness and density on digital or film imaging is the:

A film-screen image with decreased distortion may be due to: 1)Decreased patient thickness 2)Increased SID 3)Increased focal spot size

The amount of luminance (light emission)of a display monitor is the:

When using a digital imaging system,changing from 8 × 10 collimation to 14 × 17 collimation would result in _____________ brightness and ____________ contrast.

Using a Carestream digital imaging system,if an image's EI number is 1800 while the optimal range ends at 1200,this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

A film-screen image with increased density may be due to: 1)Increased OID 2)Decreased SID 3)Increased film-screen speed

An area of decreased brightness visualized on a computer monitor has ________density on a film image.