Which thoracic vertebrae should be visible on a lateral projection of the thoracic spine?

In a lateral projection of the thoracic spine, the typical visibility includes the thoracic vertebrae ranged from T3 to T12. This range captures the mid to lower thoracic spine, where the curvature of the spine allows for adequate imaging. The lateral view presents the vertebrae in a manner that highlights the intervertebral disc spaces and the spinal canal, which is particularly important for evaluating any potential pathologies in that area.

The vertebrae T1 and T2 are often not well-defined in this projection due to their location and the overlying structures, such as the shoulders and upper ribs. Therefore, the option that specifies T3 through T12 is particularly significant because it accurately reflects the vertebrae that can be optimally visualized and assessed in this specific lateral view of the thoracic spine. This consideration is crucial for both diagnostic purposes and ensuring a comprehensive understanding of thoracic spinal anatomy in radiographic imaging.