What Is the Geometric Unsharpness When the Focal Spot Measures

question 9

Multiple Choice

What is the geometric unsharpness when the focal spot measures 0.8 mm, the SID is 40 inches (100 cm) , and the OID is 2 inches (5 cm) ?

• A) 0.042 mm
• B) 0.42 mm
• C) 4.2 inches
• D) 4.2 cm

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Definitions:

Intermediate Filament

Stable cytoskeletal element of animals and some protists; structurally supports cell membranes and tissues; also forms external structures such as hair.

Cytoskeletal Element

Component of the cytoskeleton, providing structure and shape to cells, and involved in cell division, movement, and transport of materials within the cell.

Centriole

In animal cells, a barrel-shaped organelle from which microtubules grow.

Cilia

Microscopic, hair-like structures on the surface of certain cells that move in a wave-like manner, facilitating movement or the transport of fluids and particles.