On a MRI lumber spine report What is T11-12 and T12-L1?

T11-12 and T12-L1 refer to the intervertebral disc spaces and the adjacent vertebrae in the thoracic and lumbar spine. T11-12 indicates the space between the 11th thoracic vertebra (T11) and the 12th thoracic vertebra (T12), while T12-L1 indicates the space between the 12th thoracic vertebra (T12) and the 1st lumbar vertebra (L1). These designations are important for assessing disc health, potential herniation, and other spinal conditions in those specific regions.