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, Pia M.; Baum, Thomas; Schaeffeler, Christoph; Sauerschnig, Martin; Brucker, Peter U.; Mann, Alexander; Ganter, Carl; Bieri, Oliver; Rummeny, Ernst J.; Woertler, Klaus; Bauer, Jan

doi:10.1016/j.ejrad.2015.04.023

Cited by 15 publications

(11 citation statements)

References 30 publications

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“…MRA with axial traction has been evaluated with success in the shoulder, [11][12][13] hip, [14][15][16][17][18][19][20][21] knee, 22 wrist, [23][24][25][26][27][28][29][30] ankle 31,32 and metatarsophalangeal 33 and metacarpophalangeal joints. 34 To the best of our knowledge, there is no study comparing MRA of the elbow with and without traction.…”

Section: Introductionmentioning

confidence: 99%

Elbow MR arthrography with traction

Lee

Griffith

Yuen

et al. 2016

BJR

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Section: Introductionmentioning

confidence: 99%

Elbow MR arthrography with traction

Lee

Griffith

Yuen

et al. 2016

BJR

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“…Using axial tensile forces (for example, 6 kg) in asymptomatic ankle joints, an enlargement of the joint gap could be achieved without intra-articular contrast medium application, thus providing improved visualization of the cartilage surface [17]. There were no increased movement artifacts, and no subject terminated the examination.…”

Section: Magnetic Resonance Imaging and Sequence Protocolmentioning

confidence: 99%

“…There were no increased movement artifacts, and no subject terminated the examination. In the study of axial traction, the T1-weighted sequence was best evaluated with a driven equilibrium pulse (DRIVE) [17]. As shown in the examples, in the case of the T1-weighted DRIVE sequence, signal-rich joint fluid with a good demarcation of the cartilage surface is obtained with otherwise normal T1 contrast [18] (▶ Fig.…”

Section: Magnetic Resonance Imaging and Sequence Protocolmentioning

confidence: 99%

Modern Cartilage Imaging of the Ankle

Weber

Wünnemann

Jungmann

et al. 2017

Fortschr Röntgenstr

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ABSTR AC TBackground Talar osteochondral lesions are an important risk factor for the development of talar osteoarthritis. Furthermore, osteochondral lesions might explain persistent ankle pain. Early diagnosis of accompanying chondral defects is important to establish the optimal therapy strategy and thereby delaying or preventing the onset of osteoarthritis. The purpose of this review is to explain modern cartilage imaging with emphasis of MR imaging as well as the discussion of more sophisticated imaging studies like CT-arthrography or functional MR imaging.Methods Pubmed literature search concerning: osteochondral lesions, cartilage damage, ankle joint, talus, 2 D MR imaging, 3 D MR imaging, cartilage MR imaging, CT-arthrography, cartilage repair, microfracture, OATS, MACT.Results and Conclusion Dedicated MR imaging protocols to delineate talar cartilage and the appearance of acute and chronic osteochondral lesions were discussed. Recent developments of MR imaging, such as isotropic 3 D imaging that has a higher signal-to noise ratio when compared to 2 D imaging, and specialized imaging methods such as CT-arthrography as well as functional MR imaging were introduced. Several classifications schemes and imaging findings of osteochondral lesions that influence the conservative or surgical therapy strategy were discussed. MRI enables after surgery the noninvasive assessment of the repair tissue and the success of implantation. Key points▪ Modern MRI allows for highly resolved visualization of the articular cartilage of the ankle joint and of subchondral pathologies. ▪ Recent advances in MRI include 3 D isotropic ankle joint imaging, which deliver higher signal-to-noise ratios of the cartilage and less partial volume artifacts when compared with standard 2 D sequences. ▪ In case of osteochondral lesions MRI is beneficial for assessing the stability of the osteochondral fragment and for this discontinuity of the cartilage layer is an important factor. ▪ CT-arthrography can be used in case of contraindications of MRI and in unclear MRI findings as further diagnostic approach. Citation Format

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“…Usually conventional magnetic resonance imaging (MRI) is considered as the modality of choice [5]. However, in comparison to the knee joint, articular cartilage at the ankle joint is very thin (0.4–2.1 mm) [6–10]. Therefore assessment of morphological cartilage defects is challenging [10].…”

Section: Introductionmentioning

confidence: 99%

“…However, in comparison to the knee joint, articular cartilage at the ankle joint is very thin (0.4–2.1 mm) [6–10]. Therefore assessment of morphological cartilage defects is challenging [10]. Low sensitivities for detection of osteochondral lesions at the ankle on MRI were reported, which varied between 50% at 1.5 T and 75% at 3.0 T [8, 11].…”

Section: Introductionmentioning

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

Cited by 15 publications

References 30 publications

Elbow MR arthrography with traction

Elbow MR arthrography with traction

Modern Cartilage Imaging of the Ankle

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

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