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Osteoarthritis Cartilage. 2018 Feb;26(2):285-292. doi: 10.1016/j.joca.2017.11.008. Epub 2017 Nov 21.

Qualitative and quantitative assessment of cartilage degeneration using full-field optical coherence tomography ex vivo.

Author information

1
Université Grenoble-Alpes, CNRS, Grenoble INP, TIMC-IMAG, F-38000 Grenoble, France; CHU Grenoble-Alpes, South Teaching Hospital, Department of Orthopaedic Surgery and Sport Traumatology, F-38130 Echirolles, France; INSERM, CIC 1406, F-38000 Grenoble, France. Electronic address: rpailhe@chu-grenoble.fr.
2
INSERM, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Clinique Universitaire de Radiologie et Imagerie Médicale, F-38000 Grenoble, France; Université Grenoble-Alpes, CIC 1406, F-38000 Grenoble, France. Electronic address: amounier1@chu-grenoble.fr.
3
CHU Grenoble-Alpes, Département d'Anatomie et de Cytologie Pathologiques, F-38000 Grenoble, France. Electronic address: bboisson@chu-grenoble.fr.
4
INSERM, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Clinique Universitaire de Radiologie et Imagerie Médicale, F-38000 Grenoble, France; Université Grenoble-Alpes, CIC 1406, F-38000 Grenoble, France. Electronic address: rcrouchy1@chu-grenoble.fr.
5
Université Grenoble-Alpes, CNRS, Grenoble INP, TIMC-IMAG, F-38000 Grenoble, France; INSERM, TIMC-IMAG, F-38000 Grenoble, France. Electronic address: sandrine.voros@univ-grenoble-alpes.fr.
6
INSERM, CIC 1406, F-38000 Grenoble, France; Université Grenoble-Alpes, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Recherche, F-38000 Grenoble, France. Electronic address: echipon@chu-grenoble.fr.
7
INSERM, CIC 1406, F-38000 Grenoble, France; Université Grenoble-Alpes, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Recherche, F-38000 Grenoble, France. Electronic address: iboudry@chu-grenoble.fr.
8
INSERM, CIC 1406, F-38000 Grenoble, France; Université Grenoble-Alpes, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Recherche, F-38000 Grenoble, France. Electronic address: mmedici@chu-grenoble.fr.
9
Université Grenoble-Alpes, CNRS, Grenoble INP, TIMC-IMAG, F-38000 Grenoble, France; INSERM, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Recherche, F-38000 Grenoble, France. Electronic address: chughes@chu-grenoble.fr.
10
Université Grenoble-Alpes, CNRS, Grenoble INP, TIMC-IMAG, F-38000 Grenoble, France; INSERM, CIC 1406, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Recherche, F-38000 Grenoble, France; CHU Grenoble-Alpes, Pôle Santé Publique, F-38000 Grenoble, France. Electronic address: alexandre.moreau-gaudry@univ-grenoble-alpes.fr.

Abstract

OBJECTIVE:

The purpose of this study was to investigate the ability of full-field optical coherence tomography (FFOCT) to qualitatively and quantitatively evaluate cartilage degeneration using the qualitative evaluation of histology sections as the reference.

DESIGN:

Thirty-three human knee cartilage samples of variable degeneration were included in the study. A closely matching histology and FFOCT image was acquired for each sample. The cartilage degeneration was qualitatively evaluated by assigning a grade to each histology and FFOCT image. The relevance of the performed grading was assessed by calculating the intra- and inter-observer reproducibility and calculating the concordance between the histology and FFOCT grades. A near-automatic algorithm was developed to quantitatively characterize the cartilage surface in each image. The correlation between the quantitative results and the reference qualitative histology was calculated.

RESULTS:

An almost perfect agreement was achieved for both the intra- and inter-reproducibility of the histology and FFOCT qualitative grading (κ ≥ 0.91). A high and statistically significant level of agreement was measured between the histology and FFOCT grades (W = 0.95, P < 0.05). Strong and statistically significant correlations were measured between the quantitative results and the reference qualitative histology grades (ρ ≥ 0.75, P < 0.05).

CONCLUSIONS:

We have demonstrated that FFOCT is an alternative approach to conventional optical coherence tomography (OCT) that is as well adapted for the qualitative and quantitative assessment of human cartilage as the reference gold standard - histology. This study constitutes the first promising results towards developing a new diagnostic tool in the field of osteoarthritis.

KEYWORDS:

Cartilage; Full-field optical coherence tomography; Imaging; Osteoarthritis; Profile topography; Quantitative characterization

PMID:
29162490
DOI:
10.1016/j.joca.2017.11.008
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