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Park BH, Marches S, Eichelberger BM, Winter MD, Pozzi A, Banks SA. Quantifying dog meniscal volume at 1.5T and 3.0T MRI. Res Vet Sci 2019; 128:236-241. [PMID: 31837512 DOI: 10.1016/j.rvsc.2019.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 08/02/2019] [Accepted: 12/01/2019] [Indexed: 11/17/2022]
Abstract
The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair and regeneration. Accurate quantification of meniscal size and morphology are a crucial step for developing models of the meniscus. 3.0T magnetic resonance imaging (MRI) has been found to be highly accurate in analyzing the meniscus in both clinical and research fields. However, 3.0T MRI systems are still uncommonly used in veterinary medicine. The goal of the study was to compare meniscal volume measurements from 1.5T MRI system with 3.0T MRI system using proton density sequence, a clinically relevant protocol. The MR images were segmented to reconstruct 3D surface representations of both medial and lateral menisci to compare the meniscal volumes measurements. Average volume differences were 8.8% (P=0.42) and 8.9% (P=0.535) for medial and lateral meniscus, respectively. No significant volume differences were found between 1.5T and 3.0T magnetic resonance (MR) measurements, with high Pearson's correlation coefficient of r > 0.8 and the intraclass correlation coefficient (ICC) of 0.899. For inter- and intra-observer reproducibility, high correlation (ICC = 0.942 and 0.814) was observed, but with high variability for intra-observer reproducibility (lower bound 0.478, upper bound 0.949). We have shown that common clinical MR scanners and pulse sequences can be used to quantify dogs' meniscal volumes with good reproducibility. We believe that repeatable measurements of meniscal volumes using MR may provide a useful capability for assessment of postoperative results following meniscal treatments such as meniscectomy and meniscal regeneration.
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Affiliation(s)
- B H Park
- Department of Mechanical & Aerospace Engineering, University of Florida, Room 318 MAE-A, Gainesville, FL 32611, USA; Dept of the Small Animal Surgery Clinic University of Zürich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland.
| | - S Marches
- Department of Small Animal Clinical Sciences, Comparative Orthopaedics Biomechanics Laboratory, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
| | - B M Eichelberger
- Dept of Veterinary Large Animal Clinical Sciences, College of Veterinary Medicine, Texas A&M University, 4475 TAMU, College Station, TX 77843, USA; Veterinary Specialty Center of Tucson, 4908 N. La Canada Drive, Tucson, AZ 85704, USA
| | - M D Winter
- Department of Small Animal Clinical Sciences, Comparative Orthopaedics Biomechanics Laboratory, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
| | - A Pozzi
- Department of Mechanical & Aerospace Engineering, University of Florida, Room 318 MAE-A, Gainesville, FL 32611, USA; Dept of the Small Animal Surgery Clinic University of Zürich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland
| | - S A Banks
- Department of Mechanical & Aerospace Engineering, University of Florida, Room 318 MAE-A, Gainesville, FL 32611, USA
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