Fig. 4

Lateral radiograph (a), transverse MPR CT image in soft tissue reconstruction algorithm (b) and sagittal MPR CT-myelogram in bone reconstruction algorithm (c) of the cranial lumbar vertebral column segment in dog no. 25. The radiograph reveals no calcification in the L2–L3 disc space (double arrow heads), whereas the CT image through the caudal part of L2 (b) shows calcified material on the ventral left side of the vertebral canal (open arrow). The CT-myelogram confirms the presence of calcified material in the vertebral canal (open arrow), but also demonstrates an extradural location of the lesion as the ventral subarachnoid contrast column is displaced dorsally (short arrows)