Paravertebral block is an effective regional anesthesia method and a golden standart technique for various operations. In addition, paravertebral block is a volume dependent technique. However, there are few cadaveric studies that investigates the volume of the paravertebral space.~This study aims to calculate the volume of the paravertebral spaces of the lumbar and thoracic regions in the patients who had 3D computerized scan in Kocaeli University Hospital.
Volume of the paravertebral spaces of the tharic and lumbar regions will be measured.