Fig. 1From: Correlation analysis between the magnetic resonance imaging characteristics of osteoporotic vertebral compression fractures and the efficacy of percutaneous vertebroplasty: a prospective cohort studyAccording to the degree and ranges of bone marrow edema on the MRI sagittal view, the patients were divided into mild edema(a1、a2), moderate edema(b1、b2), and severe edema(c1、c2)Back to article page