Three images were obtained on the same structure with a computed radiography system. Image 1 was obtained using a 48-inch source–image receptor distance (SID) and a 5-inch object–image receptor distance (OID); image 2 was obtained using a 48-inch SID and a 3-inch OID; and image 3 was obtained with a 48-inch SID, a 3-inch OID, and a larger IR. Which image will demonstrate the greatest size distortion?

A quality control program includes checks on which of the following radiographic equipment conditions? reproducibility linearity positive beam limitation/automatic collimation

When the central ray is angled, the structure situated _____ is projected the most.

Diagnostic imaging professionals have a responsibility to adhere to effective radiation protection practices for which of the following reasons?1. The risk of cancer from radiologic examinations accumulates over a lifetime.2. To limit the risk of stochastic effects to a reasonable level compared with nonradiation risks and in relation to society’s needs, benefits gained, and economic factors.3. Good patient care standards dictate the use of effective radiation protection practices.4. Continually evaluating one’s radiation protection practices is necessary because radiation protection guidelines for diagnostic radiology assume a linear, nonthreshold, dose–risk relationship.

When imaging long bones, which of the following is (are) correct statement(s)?1. Choose a large enough IR so that one or both joints are included on the projection.2. Extend the collimation field so it extends 1 to 2 inches (2.5 cm to 5 cm) beyond the joints spaces as required.3. Histogram errors may occur if the system algorithm does not recognize a diagonal exposure field.4. Align the long bone parallel to the IR to prevent a histogram analysis error.

What is the technical adjustment required with the patient condition of emphysema?

When evaluating the ability of the monitor to display fine details (spatial resolution), it is recommended that ____________ can be displayed.

All of the following statements with regard to an angled CR or divergent beams used to record an object are true EXCEPT

A slit camera is used to measure focal spot size spatial resolution dynamic range

If the electronic timer of a high frequency generator is suspect,