For both AP and lateral lumbar views, which of the following is true about the tube tilt?

In both the anterior-posterior (AP) and lateral views of the lumbar spine, it is standard practice to use no tube tilt when positioning the x-ray tube. This is because the lumbar spine's normal curvature typically aligns the vertebrae adequately for optimal imaging without the need for any angling of the x-ray beam.

A tube tilt may be utilized in other positions or for other spinal views, particularly angles that could help visualize specific areas or deal with varying patient anatomy. However, for AP and lateral lumbar views, maintaining the tube parallel to the film or digital receptor ensures that the resultant images accurately reflect the anatomical structures without distortion. This clarity is crucial for accurate diagnosis and interpretation of the x-ray images.