A Radiograph of a Lateral Projection of the Lumbar Spine

question 1

Multiple Choice

A radiograph of a lateral projection of the lumbar spine reveals that the mid- to lower-intervertebral joint spaces are not open.The patient's waist was supported.Which of the following modifications will help open these joint spaces during the repeat exposure?

• A) Increase the SID for less divergence of the x-ray beam.
• B) Decrease waist support and/or angle the CR 5° to 8° cephalad.
• C) Have the patient hold her breath on a deeper inspiration to expand the thorax and straighten the spine.
• D) Increase waist support and/or angle CR 5° to 8° caudal.

---

Definitions:

Variable Costs

Costs that change in proportion to the level of goods or services a company produces.

Sunk Costs

Costs that have already been incurred and cannot be recovered, and thus should not affect future economic decisions.

Average Fixed Cost

Is the fixed costs of production (costs that do not change with the level of output) divided by the quantity of output produced.

Marginal Cost

The cost associated with producing one additional unit of a product, which can vary depending on the level of production.