Impact of high field (3.0T) magnetic resonance imaging on diagnosis of osteochondral defects in the ankle joint

Schibany, Nadja; Ba‐Ssalamah, Ahmed; Marlovits, Stefan; Mlynarik, Vladimir; Nöbauer-Huhmann, Iris-M.; Striessnig, Gabriele; Shodjai-Baghini, M.; Heinze, Georg; Trattnig, Siegfried

doi:10.1016/j.ejrad.2004.10.015

Cited by 29 publications

(21 citation statements)

References 24 publications

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“…Improved image quality with increased SNR makes 3.0 T MR a potential tool to diagnose joint pathology that previously was only suspected or missed [15-17, 25, 26]. A previous study comparing 3.0 T versus 1.0 T found that artificially created osteochondral defects in three isolated talus specimens were better visualized at 3.0 T [27]. Furthermore, the results of Masi et al demonstrated that 3.0 T performed better than 1.5 T in assessing porcine cartilage lesions [18].…”

Section: Discussionmentioning

confidence: 98%

MR imaging of the ankle at 3 Tesla and 1.5 Tesla: protocol optimization and application to cartilage, ligament and tendon pathology in cadaver specimens

et al. 2006

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The objective of this study was to optimize ankle joint MR imaging in volunteers at 1.5 Tesla (T) and 3.0 T, and to compare these optimized sequences concerning image quality and performance in assessing cartilage, ligament and tendon pathology in fresh human cadaver specimens. Initially our clinical ankle protocol consisting of T1-weighted (-w), fat-saturated (fs) T2-w, and short tau inversion-recovery fast spinecho (FSE) sequences was optimized at 1.5 T and 3.0 T by two radiologists. For dedicated cartilage imaging, fs-intermediate (IM)-w FSE, fs spoiled gradient echo, and balanced free-precession steady-state sequences were optimized. Using the optimized sequences, thirteen cadaver ankle joints were imaged. Four radiologists independently assessed these images concerning image quality and pathology. All radiologists consistently rated image quality higher at 3.0 T (all sequences p<0.05). For detecting cartilage pathology, diagnostic performance was significantly higher at 3.0 T (ROC-values up to 0.93 vs. 0.77; p<0.05); the fs-IM FSE sequence showed highest values among the different sequences. Average sensitivity for detecting tendon pathology was 63% at 3.0 T vs. 41% at 1.5 T and was significantly higher at 3.0 T for 2 out of 4 radiologists (p<0.05). Compared to 1.5 T, imaging of the ankle joint at 3.0 T significantly improved image quality and diagnostic performance in assessing cartilage pathology.

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Section: Discussionmentioning

confidence: 98%

MR imaging of the ankle at 3 Tesla and 1.5 Tesla: protocol optimization and application to cartilage, ligament and tendon pathology in cadaver specimens

et al. 2006

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“…19,20,21,36 However, only a paucity of data exists regarding the ankle. 18,22 MR imaging of the ankle is particularly challenging because of the small volume and high complexity of the joint; thus high spatial resolution is needed. It is not known if the advantages of MR imaging at higher field strengths (ie, higher SNR, better fat saturation) outweigh the disadvantages as higher chemical shift and larger susceptibility artifacts at small FOV imaging.…”

Section: Bauer Et Almentioning

confidence: 99%

“…Imaging at 3.0 T has been identified as having potential in optimizing these parameters in musculoskeletal imaging, yielding higher diagnostic accuracy. [15][16][17][18][19] In particular, visualization of pathologic cartilage lesions at the knee was better at 3.0 T. 20,21 However, to our knowledge, no study yet assessed the potential benefits of 3.0 T in assessing ligament pathology at the ankle, and only few data exist regarding the assessment of ankle cartilage pathology at 3.0 T. 17,22 Thus the purpose of this study was to compare previously optimized imaging protocols at 1.5 T and 3.0 T concerning the diagnostic performance in assessing cartilage and ligament pathology of the ankle. …”

mentioning

confidence: 95%

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

Bauer¹,

Barr²,

Henning³

et al. 2008

Investigative Radiology

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“…Current and ongoing development of higher field strength can be observed and a new clinical standard of 3.0 Tesla seems to be being established. 22,23,[52][53][54] High-field MRI allows increased resolution while maintaining the same scan time. In addition, the development of parallel imaging allows shorter scan times.…”

Section: Discussionmentioning

confidence: 99%

Quantitative and topographical evaluation of ankle articular cartilage using high resolution MRI

Millington

Tang

et al. 2006

Journal Orthopaedic Research

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The objectives of this study were to quantitatively evaluate the articular cartilage layers of the ankle and describe the cartilage topographical distribution across the joint surfaces using high resolution MRI and image segmentation. An anisotropic diffusion noise reduction algorithm and a directional gradient vector flow (dGVF) snake segmentation algorithm were applied to cartilage sensitive MR images. Eight cadaveric ankles were studied. Six repeated data sets were acquired in five of the ankles. Quantitative parameters were calculated for each cartilage layer; coefficients of variation (CV) were calculated from the six repeated data sets; and 3D thickness distribution maps were generated. The noise reduction algorithm produced marked image enhancement. Mean cartilage thickness ranged from 0.91 AE 0.08 mm in the fibula to 1.34 AE 0.14 mm in the talus. Mean cartilage volume was 3.32 AE 0.55 ml, 1.72 AE 0.25 ml, and 0.35 AE 0.06 ml for the talus, tibia, and fibula, respectively. Mean CV ranged 2.82%-5.04% for quantitative parameters in the talus and tibia. The reported noise reduction and segmentation technique allow precise extraction of ankle cartilage and 3D reconstructions show that the thickest cartilage occurs over the talar shoulders, where osteochondritits dissecans (OCD) lesions commonly occur. ß

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Impact of high field (3.0T) magnetic resonance imaging on diagnosis of osteochondral defects in the ankle joint

Cited by 29 publications

References 24 publications

MR imaging of the ankle at 3 Tesla and 1.5 Tesla: protocol optimization and application to cartilage, ligament and tendon pathology in cadaver specimens

MR imaging of the ankle at 3 Tesla and 1.5 Tesla: protocol optimization and application to cartilage, ligament and tendon pathology in cadaver specimens

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

Quantitative and topographical evaluation of ankle articular cartilage using high resolution MRI

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