RADR 1313 Exam 3 Review

OID

• The distance between the radiation source and the image receptor

• The distance between the anatomy and the image receptor

• The distance between the radiation source and the anatomy

• The distance between the grid and the image receptor

The distance between the radiation source and the anatomy:

• OID

• SID

• SOD

• OPP

The relationship between distance and x-ray beam intensity, specifically that the intensity of the x-ray beam is inversely proportional to the square of the distance from the source, is the:

• direct square law

• inverse square law

• magnification law

• Murphy's law

Magnification factor:

• SID divided by SOD

• OID divided by SOD

• SOD divided by SID

• SOD divided by OID

Type of distortion which misrepresents the size of and object:

• elongation

• shape

• foreshortening

• magnification

In order to image a structure that is located anteriorly in the body, it is best radiographed to minimize magnification by doing a(n) _____ projection.

• anterior-posterior

• posterior-anterior

• lateral

• oblique

Magnification is affected by focal spot size.

• True

• False

Increasing SID increases spatial resolution.

• True

• False

Which body habitus requires the highest exposure factors?

• Asthenic

• Sthenic

• Hypersthenic

• Hypostenic

The property of the x-ray beam that impacts the unsharpness on the image is beam divergence.

• True

• False