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How does off level grid error occur?

In radiography of a large abdomen, which of the following is/are effective way(s) to minimize the amount of scattered radiation reaching the image receptor (IR)? 1. Use of close collimation 2. Use of a low mAs 3. Use of a low-ratio grid

If an IR exposed using 12:1 grid ratio exhibits loss of signal at its lateral edges, it is probably because the

A DI  increase in ______ percent increments will indicate an overexposure, while a decrease in ______percent will indicate an underexposure.

The anode heel affect1. should be considered when the structure of interest is more than 43 inches long.2. is a variation in photon intensity across the exposure field.3. occurs because the heel of the anode absorbs more photons than the toe.4. is best used with the thinner body toward the cathode.

What is an/are example(s) of acceptable electronic annotations on digital images?

What is the purpose of the grid oscillating or reciprocating?

Best practice guidelines for the use of automatic exposure control include all of the following except1. set the optimum kV for the body part.2. set the backup timer to 150% to 200% of the expected manual exposure.3. set the highest mA station for the focal spot size needed.4. wide collimation will ensure IR coverage.

Radiographic images, for medicolegal reasons, are required to include the following information 1. the patient’s name and/or identification number 2. a left or right side marker 3. the patient’s birth date

A grid usually is used in which of the following circumstances? 1. When radiographing a large or dense body part 2. When using high kilovoltage 3. When a lower patient dose is required