European Radiology

, Volume 23, Issue 2, pp 496–504 | Cite as

Reproducibility of 3D delayed gadolinium enhanced MRI of cartilage (dGEMRIC) of the knee at 3.0 T in patients with early stage osteoarthritis

  • J. van Tiel
  • E. E. Bron
  • C. J. Tiderius
  • P. K. Bos
  • M. Reijman
  • S. Klein
  • J. A. N. Verhaar
  • G. P. Krestin
  • H. Weinans
  • G. Kotek
  • E. H. G. Oei
Musculoskeletal

Abstract

Objectives

To assess the reproducibility of 3D delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) at 3 T in early stage knee osteoarthritis (OA) patients.

Methods

In 20 patients, 3D dGEMRIC at 3 T was acquired twice within 7 days. To correct for patient motion during acquisition, all images were rigidly registered in 3D. Eight anatomical cartilage ROIs were analysed on both images of each patient. Capability of dGEMRIC to yield T1 maps that reproducibly distinguish spatial differences in cartilage quality was assessed in two ROIs within a single slice in each patient. Reproducibility was assessed using ICCs and Bland-Altman plots.

Results

ICCs ranged from 0.87 to 0.95, indicating good reproducibility. T1 maps revealed reproducible spatial differences in cartilage quality (ICC 0.79). Based on the Bland-Altman plots, we defined a threshold of 95 ms to determine if a change in dGEMRIC outcome in longitudinal research was statistically significant.

Conclusions

3D knee dGEMRIC at 3 T combined with 3D image registration is a highly reproducible measure of cartilage quality in early stage OA. Therefore, dGEMRIC may be a valuable tool in the non-invasive evaluation of cartilage quality changes in longitudinal research in patients with early stage OA and focal cartilage defects.

Key Points

Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) can assess osteoarthritis

dGEMRIC yields highly reproducible T1 values in early stage osteoarthritic patients

A threshold was established to determine significant changes in dGEMRIC outcomes

dGEMRIC can be used to evaluate cartilage quality in longitudinal research

Keywords

Quantitative MR imaging Articular cartilage Knee osteoarthritis Reproducibility of results dGEMRIC 

Abbreviations and acronyms

ACLT

Anterior cruciate ligament tear

dGEMRIC

Delayed gadolinium-enhanced magnetic resonance imaging of cartilage

ICC

Intraclass correlation coefficient

OA

Osteoarthritis

pFC

Posterior non-weight-bearing cartilage of the femoral condyle

ROIs

Regions of interest

sGAG

Sulphated glycosaminoglycan

TI

Inversion time

wbFCa

Anterior weight-bearing cartilage of the femoral condyle

wbFCp

Posterior weight-bearing cartilage of the femoral condyle

wbTP

Weight-bearing cartilage of the tibial plateau

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Copyright information

© European Society of Radiology 2012

Authors and Affiliations

  • J. van Tiel
    • 1
    • 2
    • 6
  • E. E. Bron
    • 1
    • 3
  • C. J. Tiderius
    • 4
  • P. K. Bos
    • 2
  • M. Reijman
    • 2
  • S. Klein
    • 1
    • 3
  • J. A. N. Verhaar
    • 2
  • G. P. Krestin
    • 1
  • H. Weinans
    • 2
    • 5
  • G. Kotek
    • 1
  • E. H. G. Oei
    • 1
  1. 1.Department of RadiologyErasmus Medical CenterRotterdamThe Netherlands
  2. 2.Department of Orthopedic SurgeryErasmus Medical CenterRotterdamThe Netherlands
  3. 3.Departments of Medical InformaticsErasmus Medical CenterRotterdamThe Netherlands
  4. 4.Department of Orthopedic Surgery, Skane University HospitalLund UniversityLundSweden
  5. 5.Department of Biomechanical EngineeringDelft University of TechnologyDelftThe Netherlands
  6. 6.Department of Radiology and Department of Orthopedic SurgeryErasmus Medical CenterRotterdamThe Netherlands

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