What is the size of the cassette used for the lateral lumbar view?

The correct size of the cassette used for the lateral lumbar view is 14"x17". This size is standard because it provides adequate dimensions to cover the lumbar spine while allowing for the necessary margins and positioning.

In a lateral lumbar view, the goal is to capture the entire lumbar vertebrae along with adjacent anatomical structures, such as the intervertebral discs and the surrounding soft tissues. The 14"x17" cassette is specifically designed to accommodate the broader area required for this view, providing the radiologist with a comprehensive image that enhances diagnostic accuracy.

Larger sizes, such as 16"x20", may be cumbersome and are often used for different imaging needs or larger anatomic regions, while smaller sizes, like 10"x12" or 12"x14", would not comprehensively capture the entire lumbar area, potentially missing critical anatomical details necessary for diagnosis. Thus, the 14"x17" size strikes the right balance for capturing the lateral lumbar view effectively.