floor-to-floor height
2.The condition is to scan the floor: It is 5mm, 120KV, 50MA, 8S to be thick, layer from 5 mm, measure outstanding the nuclear area of marrow from the waist intervertebral disc, the height of stress vertebra interval of intervertebral disc, the angle of stress vertebra interval of intervertebral disc, lumbar vertebrae physiological crooked degrees of value and lumbar vertebrae little joint getting symmetrical.

