Figure 1
From: In vivo experimental intervertebral disc degeneration induced by bleomycin in the rhesus monkey
Radiography and T1ρ-weighted images of a part of the lumbar spine of rhesus monkeys. (A) The Disc Height Index was calculated by dividing the average disc height (white arrows) by the average vertebral body height (blasck arrows). (B) An example of placement of ROIs over NP(#), anterior AF(*) and posterior AF(☆) was showed in the IVD respectively. ROIs: regions of interest; NP: nucleus pulposus; AF: annulus fibrosus; IVD: Intervertebral disc.