In an oblique lumbar image, which structure is referred to by the label (B)?

In an oblique lumbar image, the pars interarticularis is the structure indicated by label (B). The pars interarticularis is a crucial anatomical feature located between the superior and inferior articular facets of the vertebrae. It plays a significant role in maintaining the stability of the lumbar spine and in the articulation between adjacent vertebrae.

When examining an oblique view of the lumbar spine, the pars interarticularis can be visualized more clearly than in other views, making it essential for detecting conditions such as spondylolysis or spondylolisthesis. Understanding the location and function of the pars interarticularis is vital for radiologists and healthcare professionals when diagnosing spinal disorders.

Other structures mentioned, such as the facet joint, intervertebral disc, and spinal canal, do not specifically refer to the labeling in this context. The facet joint pertains to the interaction between two adjacent vertebrae but is different from the pars interarticularis. The intervertebral disc, while also located in proximity to these structures, serves as a cushion between vertebrae and is not identified by the label in this oblique view. The spinal canal refers to the space that houses the spinal cord, but it