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What is the technical adjustment required with the patient condition of pleural effusion?

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.

The kilovoltage settings on radiographic equipment must be tested annually and must be accurate to within 

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.

When performing a quality control test to ensure that adjacent Ma stations are accurate, the results must be within this amount of one another:

A qualified x-ray service engineer should be used to evaluate and correct the following radiographic/fluoroscopic imaging features:1. high repeat analysis rates for positioning2. automatic brightness control3. source-to-skin distance limits4. fluoroscopic contrast resolution5. image display monitor brightness/contrast6. AEC reproducibility

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?

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

The radiographic accessory used to measure the thickness of body parts to determine optimal selection of exposure factors is the

The actual collimation as compared to collimation as indicated by the light field should be within ____ of the SID.