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Carter: Digital Radiography and PACS - page 6 / 6

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ANS:B

OBJ:Discuss factors that affect spatial resolution in cassetteless systems.

TOP:Pixel and matrix size

27.Which of the following will increase resolution?

a.

Small matrix, large pixels

b.

Small matrix, small pixels

c.

Large matrix, large pixels

d.

Large matrix, small pixels

ANS:D

OBJ:Discuss factors that affect spatial resolution in cassetteless systems.

TOP:Pixel and matrix size

28.The main factor that limits image quality in cassetteless image acquisition is ______.

a.

Time

b.

Heat

c.

Noise

d.

DQE

ANS:C

OBJ:Discuss factors that affect spatial resolution in cassetteless systems.

TOP:Cassetteless image acquisition errors

29.Electronic memory artifact occurs when exposures are taken in too rapid a sequence.

a.

True

b.

False

ANS:A

OBJ:Discuss factors that affect spatial resolution in cassetteless systems.

TOP:Cassetteless image acquisition errors

30.Incomplete charge transfer with cassetteless systems results in ______.

a.

Inaccuracies in pixel values in subsequent exposures

b.

Electronic memory artifact

c.

Both A and B

d.

Neither A nor B

ANS:C

OBJ:Discuss factors that affect spatial resolution in cassetteless systems.

TOP:Cassetteless image acquisition errors

Copyright © 2008 by Mosby, Inc. an affiliate of Elsevier Inc.

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