Blog

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.

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

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

A photographic (non-geometric) problem with visibility of detail would be likely due to