MR Imaging of the Knee at 0.2 and 1.5 T

Cotten, Anne; Delfaut, E. M.; Demondion, Xavier; Lapègue, Franck; Boukhelifa, M.; Boutry, Nathalie; Chastanet, P; Gougeon, F.

doi:10.2214/ajr.174.4.1741093

Cited by 79 publications

(47 citation statements)

References 18 publications

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“…We were concerned that the use of 0.5-T MRI machines may cause lower results than high-field machines, but it was confirmed by previous studies that the level of diagnostic accuracy in ACL and meniscal tears is comparable for low-and high-field-strength MRI [5].…”

Section: Discussionmentioning

confidence: 96%

Accuracy of routine magnetic resonance imaging in meniscal and ligamentous injuries of the knee: comparison with arthroscopy

Behairy

Dorgham

Khaled

2008

International Orthopaedics (SICOT)

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The aim of this study was to detect the accuracy of routine magnetic resonance imaging (MRI) done in different centres and its agreement with arthroscopy in meniscal and ligamentous injuries of the knee. We prospectively examined 70 patients ranging in age between 22 and 59 years. History taking, plain X-ray, clinical examination, routine MRI and arthroscopy were done for all patients. Sensitivity, specificity, accuracy, positive and negative predictive values, P value and kappa agreement measures were calculated. We found a sensitivity of 47 and 100%, specificity of 95 and 75% and accuracy of 73 and 78.5%, respectively, for the medial and lateral meniscus. A sensitivity of 77.8%, specificity of 100% and accuracy of 94% was noted for the anterior cruciate ligament (ACL). We found good kappa agreements (0.43 and 0.45) for both menisci and excellent agreement (0.84) for the ACL. MRI shows high accuracy and should be used as the primary diagnostic tool for selection of candidates for arthroscopy. Level of evidence: 4.

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Section: Discussionmentioning

confidence: 96%

Accuracy of routine magnetic resonance imaging in meniscal and ligamentous injuries of the knee: comparison with arthroscopy

Behairy

Dorgham

Khaled

2008

International Orthopaedics (SICOT)

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“…The use of low-field open configuration magnets in musculoskeletal applications is currently increasing, assuming equivalent accuracy compared with conventional high-field scanners, increased patient comfort, and higher cost effectiveness [1][2][3]13]. Low-field magnets have traditionally been associated with several drawbacks, including long acquisition times, poor signal-to-noise ratio, poor spatial resolution, and the inability to use frequency selective fat saturation [2,3,12].…”

Section: Discussionmentioning

confidence: 99%

Three-Point Dixon Chemical-Shift Imaging for Evaluating Articular Cartilage Defects in the Knee Joint on a Low-Field-Strength Open Magnet

Bredella

Losasso

Moelleken

et al. 2001

American Journal of Roentgenology

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“…Previously, it was reported that low-field devices, especially modern ones, allow for obtaining images of a quality equivalent to the images of high-field resonance (Parizel et al 1995, Baird et al 1998b, Cotten et al 2000, Konar and Lang 2011. However, direct extrapolation of the results obtained with high-field to low-field MRI is not recommended (Baird et al 1999).…”

Section: Resultsmentioning

confidence: 99%

Comparison of High-field and Low-field Magnetic Resonance Imaging of Stifle Joint Disorders in Dogs

Przeworski¹,

Adamiak²,

Głodek³

2016

Polish Journal of Veterinary Sciences

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The most common cause of hindlimb lameness in dogs is cranial cruciate ligament rupture. In 48-77.3% of the population this trauma leads to secondary damage of the meniscus. Depending on the magnetic strength of the used device, different diagnostic accuracy can be achieved. The examination sensitivity of magnetic resonance imaging is affected by many factors which are independent of diagnostic strength, such as correct positioning of the patient, size of the stifle joint examined, or selection of the right protocol of sequences. Sensitivity of meniscus damage detection was 100% and 90%, respectively, in high-and low-field magnetic resonance. The best results were reported during examination of the stifle in dogs above 10 kg b.w. at a flexion angle of 145 o , and in sagittal and dorsal planes. Regardless of the magnetic strength applied, imaging of the whole cranial cruciate ligament is difficult. Moreover, MRI allows the detection of the first signs of osteoarthritis, which were observed 4 and 6 weeks after rupture of the cranial cruciate ligament using high and low-field MRI. This also applies to lesions in the subchondral bone or a bone marrow which occurred in association with insufficiency of the stifle joint, and were mainly localized in the epiphysis of the femur and tibia. The present article provides a comparison of different examination protocols and images of damaged stifle structures, such as menisci, ligaments and bones of the stifle joint visualized with low-field and high-field magnetic resonance. Magnetic resonance arthrography is also discussed.

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MR Imaging of the Knee at 0.2 and 1.5 T

Abstract: The level of diagnostic accuracy in anterior cruciate ligament tears and meniscus tears is comparable for low- and high-field-strength MR imagers.

Cited by 79 publications

References 18 publications

Accuracy of routine magnetic resonance imaging in meniscal and ligamentous injuries of the knee: comparison with arthroscopy

Accuracy of routine magnetic resonance imaging in meniscal and ligamentous injuries of the knee: comparison with arthroscopy

Three-Point Dixon Chemical-Shift Imaging for Evaluating Articular Cartilage Defects in the Knee Joint on a Low-Field-Strength Open Magnet

Comparison of High-field and Low-field Magnetic Resonance Imaging of Stifle Joint Disorders in Dogs

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