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Exam 33: Automatic Exposure Controls

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Question 1

Multiple Choice

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Match the following choices with the correct statement as each is related to automatic exposure control technology. -AP hip

A) phototiming
B) minimum response time
C) backup mAs
D) underexposed image
E) overexposed image
F) density controls
G) all three detectors
H) center detector only

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Question 2

Multiple Choice

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When more than one ionization chamber is used, the signal is

A) averaged.
B) muted.
C) multiplied.
D) all of the above

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Question 3

Multiple Choice

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Contemporary AEC systems work on the x-ray property

A new high frequency radiographic system is being released to a customer for first clinical use.The applications person states that the AEC density controls are in 20% increments.If a normal AEC exposure of the hip is 24 mAs, a repeat exposure at +2 would yield a mAs value of

When using APR for a radiographic exposure,

U.S.public law requires that generators automatically terminate AEC exposures at ____ mAs above 50 kVp.

When an AEC is used for a PA chest, which ionization chambers are utilized?

Early versions of AEC technology were referred to as

Match the following choices with the correct statement as each is related to automatic exposure control technology. -typically 0.001 sec

If the primary beam is collimated from an activated chamber, the result is a

When an AEC is used for a lateral chest, which ionization chambers are utilized?

Match the following choices with the correct statement as each is related to automatic exposure control technology. -Older technologists may still refer to it.

When an AEC is used for an AP hip, which ionization chambers are utilized?

A radiographer is performing an AP knee radiograph using AEC.The manual technique for this exam would be 12 mAs at 80 kVp.The backup mAs the radiographer should set would be

The backup time of most AECs is set at ____ of the anticipated manual exposure time.

When an AEC is used for an AP lumbar spine, which ionization chambers are utilized?

The single function of an AEC is to eliminate the need to set

Automatic exposure devices provide a diagnostic quality radiograph when the

Match the following choices with the correct statement as each is related to automatic exposure control technology. -AP abdomen radiograph

When using an AEC, the radiographer loses control of