Magnetic Resonance Imaging of the Ankle at 3.0 Tesla and 1.5 Tesla in Human Cadaver Specimens With Artificially Created Lesions of Cartilage and Ligaments

Bauer, Jan; Barr, Cameron; Henning, Tobias D.; Malfair, David; Benjamin, C.; Steinbach, Lynne S.; Link, Thomas M.

doi:10.1097/rli.0b013e31817e9ada

Cited by 50 publications

(38 citation statements)

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“…However, in recent years, improvements of cartilage MR imaging were described. In particular, 3 T MRI is superior to 1.5 T MRI [8, 33, 34]. Improved visualization of the cartilage surface in high resolution MRI of the ankle was achieved by application of a traction device [10].…”

Section: Discussionmentioning

confidence: 99%

“…With presence of metal implants, despite 1.5 T MR imaging and conventional and advanced metal artifact reducing sequences, MRI remains challenging [36]. In several studies, it has been shown that IM-w fs sequences perform best with respect to cartilage evaluation [8, 33]. However, spectral fat saturation is very sensitive to magnetic field inhomogeneities and does not work properly in case of presence of metal implants [37].…”

Section: Discussionmentioning

confidence: 99%

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Diagnostic Value of CT Arthrography for Evaluation of Osteochondral Lesions at the Ankle

Kirschke

Braun

Baum

et al. 2016

BioMed Research International

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Background. To retrospectively determine the diagnostic value of computed tomography arthrography (CTA) of the ankle in the evaluation of (osteo)chondral lesions in comparison to conventional magnetic resonance imaging (MRI) and intraoperative findings. Methods. A total of N = 79 patients had CTAs and MRI of the ankle; in 17/79 cases surgical reports with statements on cartilage integrity were available. Cartilage lesions and bony defects at talus and tibia were scored according to defect depth and size by two radiologists. Statistical analysis included sensitivity analyses and Cohen's kappa calculations. Results. On CTA, 41/79 and 31/79 patients had full thickness cartilage defects at the talus and at the tibia, respectively. MRI was able to detect 54% of these defects. For the detection of full thickness cartilage lesions, interobserver agreement was substantial (0.72 ± 0.05) for CTA and moderate (0.55 ± 0.07) for MRI. In surgical reports, 88–92% and 46–62% of full thickness defects detected by CTA and MRI were described. CTA findings changed the further clinical management in 15.4% of cases. Conclusions. As compared to conventional MRI, CTA improves detection and visualization of cartilage defects at the ankle and is a relevant tool for treatment decisions in unclear cases.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Diagnostic Value of CT Arthrography for Evaluation of Osteochondral Lesions at the Ankle

Kirschke

Braun

Baum

et al. 2016

BioMed Research International

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“…Barr et al reported, that compared to 1.5 T, 3.0 T significantly improved image quality and diagnostic performance in assessing ankle cartilage pathology [6]. IMfs or T2-w fs sequences have been reported to show the best diagnostic performance in the assessment of ankle cartilage [6,24]. On the contrary, Fischbach et al reported, that 3D GE fs sequences appear to be superior to T2-w fs FSE sequences [25].…”

Section: With Tractionmentioning

confidence: 92%

3.0 T MR imaging of the ankle: Axial traction for morphological cartilage evaluation, quantitative T2 mapping and cartilage diffusion imaging—A preliminary study

Jungmann

Baum

Schaeffeler

et al. 2015

European Journal of Radiology

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“…1). Meniscal anatomy acquired at 3.0 T has been demonstrated to be displayed with enhanced visibility while meniscal pathology obtained at 3.0 T has been shown to allow for better clinical assessment as demonstrated by the superior sensitivity and specificity measures when compared with lower field imaging systems (11, 13-16) (Fig. 2).…”

Section: Advantages Of Using 30 Tmentioning

confidence: 99%

Magnetic Resonance Imaging of the Knee: Optimizing 3 Tesla Imaging

Shapiro

Staroswiecki

Gold

2010

Seminars in Roentgenology

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IntroductionMagnetic resonance imaging (MRI), with its multiplanar capabilities and excellent soft-tissue contrast, has established itself as the leading modality for noninvasive evaluation of the musculoskeletal system (1-5). It is regarded as the top imaging and diagnostic tool for the knee joint as a result of its ability to evaluate a wide range of anatomy and pathology varying from ligamentous injuries to articular cartilage lesions. Imaging of the knee requires excellent contrast, high resolution and the ability to visualize very small structures, all of which can be provided by MR imaging. The development of advanced diagnostic MR imaging tools for the joints is of increased clinical importance as it has been recently shown that musculoskeletal imaging is the most rapidly growing field in MR imaging, second only to neuroradiology applications (6).Currently, most clinical evaluation of the musculoskeletal system is performed at intermediate field strengths of 1.5 T or lower. High field systems, like 3.0 T, are now becoming increasingly available for clinical use. Although at first used primarily for neurological imaging, an increasing number of studies have demonstrated the abilities and advantages of 3.0 T systems in musculoskeletal imaging (7-10). The most notable advantage includes an increased signalto-noise ratio (SNR) which can lead to a shorter imaging time or improved image resolution. However, with the increase to a 3.0 T field strength comes a various number of considerations that must be dealt with in order to optimize its intrinsically superior imaging capabilities.Advantages of using 3.0 T 3.0 T imaging is of special interest to the musculoskeletal system due to the increased MR signal and higher SNR. SNR is a function of the main magnetic field strength, the volume of tissue being imaged and the radiofrequency coil used. Therefore if the tissue volume imaged and coil used remain the same, the transition from 1.5 T to 3.0 T should result in twice the intrinsic SNR. This increase in SNR then allows for up to four times faster image acquisition on multiple-average scans or double the resolution in one direction. Positive clinical applications abound. The increase in scan speed has the ability to provide for increased patient © 2010 Elsevier Inc. All rights reserved.Corresponding author: Garry Gold, MD, Department of Radiology, Grant Building Room SO68B, Stanford, CA 94305, gold@stanford.edu. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Shortly after the introduction of 3.0 T imaging capabilities several researchers began studies in an attempt to invest...

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Magnetic Resonance Imaging of the Ankle at 3.0 Tesla and 1.5 Tesla in Human Cadaver Specimens With Artificially Created Lesions of Cartilage and Ligaments

Abstract: Compared with 1.5-T imaging, the 3.0-T imaging of the ankle joint at improved diagnostic performance in assessing cartilage significantly and there was a higher sensitivity for assessing ligamentous pathology.

Cited by 50 publications

References 42 publications

Diagnostic Value of CT Arthrography for Evaluation of Osteochondral Lesions at the Ankle

Diagnostic Value of CT Arthrography for Evaluation of Osteochondral Lesions at the Ankle

3.0 T MR imaging of the ankle: Axial traction for morphological cartilage evaluation, quantitative T2 mapping and cartilage diffusion imaging—A preliminary study

Magnetic Resonance Imaging of the Knee: Optimizing 3 Tesla Imaging

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