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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

What is the location on a histogram graph of air/gas?

All of the following are guidelines for producing optimal image histograms except

What is the location on a histogram graph of fat?

Histogram analysis errors for digital systems include all of the following except

If a projection does not differentiate the densest and thickest structures in the VOI, adjusting the _____ is necessitated.

Which of the following technical factors is primarily used to regulate subject contrast?

An AP abdomen projection was obtained using 85 kVp at 10 mAs. The resulting image demonstrated excessively low contrast, although the density was acceptable. What new technique could be used to obtain the projection with equal density but higher contrast?

An exposure recognition field algorithm is applied to the image data to1. distinguish the gray shade values inside the exposure field from those on the outside.2. ensure the histogram has the correct shape.3. identify the volume of interest before rescaling.4. identify the volume of interest after rescaling.5. reshape the histogram.

Most modern AEC systems provide a minimum response time of