**Extra Credit: According to Bontragers, list the 5 Lower Spine landmarks and their associated vertebral levels: This extra credit question is worth 2.5% (.5% for each landmark and the associated vertebral level) Here is an example of a cervical spine landmark and associated vertebral level 1. Thyroid cartilage = C4-5

The small section of bone found between the superior and inferior articular processes of a vertebrae in the lumbar spine is termed:

When performing an AP Lumbar Spine, the patient’s legs should be straight to decrease lordotic curvature of the lumbar spine. 

Which positions would best demonstrate spondylolisthesis?

The “nose” of the “Scotty dog” represents the spinous process of a lumbar vertebrae.

What structure is indicated by number 4 in this diagram?

A radiograph of an AP axial sacrum reveals that it is foreshortened and the sacral foramina are not clearly seen. What specific positioning error is present on this radiograph?

What CR angle if any should be used for a lateral sacrum/coccyx projection?

According to Bontrager, where should the CR be centered for an AP projection of the lumbar spine when using a 14 x 17 IR?

Check all of the following that are TRUE.When evaluating an oblique L-spine radiograph the radiographer should look for which of the following criteria?