Exam 13: Exposure Technique Selection

Using a lower mA station during an AEC examination results in

When your patient for an AP abdomen is very heavy,using AEC results in

When the radiographer has the opportunity to set the back-up time,it should be approximately _____________ of the expected exposure time

When using AEC with digital imaging,errors resulting in overexposure to the IR result in

With digital imaging using AEC,if an AP thoracic spine is imaged with the central ray passing 3 inches to the right of the spine,the brightness in the area of interest is __________________ and the exposure time is ________________________.(Assume all other factors are appropriate. )

With digital imaging using AEC,if an AP thoracic spine is imaged with the density setting changed from 0 to -2,the brightness in the area of interest is __________________ and the ____________ is increased.(Assume all other factors are appropriate. )

Which of the following is the most critical aspect of successfully performing an examination using AEC?

Ionization chamber AEC detectors are entrance-type devices because the x-rays must

AEC controls the amount of radiation reaching the IR by controlling the

The maximum length of time that an exposure lasts when using AEC is the

With digital imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the brightness in the area of interest is __________________ and the patient exposure is ________________________.(Assume all other factors are appropriate. )

When using AEC,the kVp

Once a part has been selected using APR,the exposure factors cannot be adjusted.

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the density setting changed from 0 to +2,the density in the area of interest will be __________________ and the exposure time will be ________________________.(Assume all other factors are appropriate. )

The mAs readout is of little value because there is no need to set manual exposure factors.

If the patient for an AP thoracic spine image is centered so that the spine is not over the top of the detector

An ionization chamber is a hollow cell that contains

With film-screen imaging using AEC,if an AP thoracic spine is imaged using an outside instead of center detector,the density in the area of interest will be __________________ and the patient will be ________________________.(Assume all other factors are appropriate. )

If an AEC has three detectors,only one of the three can be selected for an exposure.

The actual amount of exposure used for an image when AEC is being used is the