Is MRI an adequate replacement for CT scans in the three-dimensional assessment of acetabular morphology?

Acta Radiologica
Jens GoronzyFalk Thielemann

Abstract

Appropriate three-dimensional imaging of the hip joint is a substantial prerequisite for planning and performing surgical correction of deformities. Although surgeons still use computed tomography (CT), modern and fast acquisition techniques of volumetric imaging using magnetic resonance imaging (MRI) for pelvic measurements enable similar resolution. This study was designed to determine if already described measures of acetabular morphology are comparable in both techniques and if assessment can be performed with equal intra-observer and inter-observer reliability. Thirty-two hips (16 patients) were examined with a pelvic CT and a MRI with 3-T. Pelvic orientation was standardized by each observer in coronal, axial, and sagittal planes. Acetabular version as well as seven acetabular sector angles were measured by two observers twice with a minimum of four weeks between sessions. Inter-rater reliability showed excellent results for intra- and inter-rater reliability for CT (0.977-0.999) and MRI (0.969-0.998) measuring acetabular version and sector angles. Evaluating the reliability of CT and MRI for each observer revealed excellent results (0.972-0.998). Evaluating the Bland-Altman plots for intra-observer reliability showed an ...Continue Reading

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Citations

Oct 22, 2019·The American Journal of Sports Medicine·Ryan E BreighnerHollis G Potter
Jan 12, 2022·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Ke SongMichael D Harris
Jan 20, 2022·Journal of Magnetic Resonance Imaging : JMRI·Mateusz C FlorkowPeter R Seevinck

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