Update Knorpelbildgebung der kleinen Gelenke

Heiss, Rudolf; Janka, Rolf; Uder, Michael; Nagel, Armin M.; Trattnig, Siegfried; Roemer, Frank W.

doi:10.1007/s00117-019-0521-x

Cited by 5 publications

(9 citation statements)

References 56 publications

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“…Conventional MRI usually depicts morphologic degenerative changes at the cartilage and the TFCC only at advanced stages of disease [ 1 ]. In contrast, compositional MRI promises to overcome these issues by depicting biochemical tissue properties much earlier than morphologic changes can be detected [ 5 , 6 ]. T2 and T2* relaxometry (“mapping”) are two widely applied techniques that enable non-invasive quantification of tissues’ water content and assessment of collagen content and organization [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Variation in cartilage T2 and T2* mapping of the wrist: a comparison between 3- and 7-T MRI

Heiss,

Weber,

Balbach

et al. 2023

Eur Radiol Exp

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Background To analyze regional variations in T2 and T2* relaxation times in wrist joint cartilage and the triangular fibrocartilage complex (TFCC) at 3 and 7 T and to compare values between field strengths. Methods Twenty-five healthy controls and 25 patients with chronic wrist pain were examined at 3 and 7 T on the same day using T2- and T2*-weighted sequences. Six different regions of interest (ROIs) were evaluated for cartilage and 3 ROIs were evaluated at the TFCC based on manual segmentation. Paired t-tests were used to compare T2 and T2* values between field strengths and between different ROIs. Spearman’s rank correlation was calculated to assess correlations between T2 and T2* time values at 3 and 7 T. Results T2 and T2* time values of the cartilage differed significantly between 3 and 7 T for all ROIs (p ≤ 0.045), with one exception: at the distal lunate, no significant differences in T2 values were observed between field strengths. T2* values differed significantly between 3 and 7 T for all ROIs of the TFCC (p ≤ 0.001). Spearman’s rank correlation between 3 and 7 T ranged from 0.03 to 0.62 for T2 values and from 0.01 to 0.48 for T2* values. T2 and T2* values for cartilage varied across anatomic locations in healthy controls at both 3 and 7 T. Conclusion Quantitative results of T2 and T2* mapping at the wrist differ between field strengths, with poor correlation between 3 and 7 T. Local variations in cartilage T2 and T2* values are observed in healthy individuals. Relevance statement T2 and T2* mapping are feasible for compositional imaging of the TFCC and the cartilage at the wrist at both 3 and 7 T, but the clinical interpretation remains challenging due to differences between field strengths and variations between anatomic locations. Key points •Field strength and anatomic locations influence T2 and T2* values at the wrist. •T2 and T2* values have a poor correlation between 3 and 7 T. •Local reference values are needed for each anatomic location for reliable interpretation. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Variation in cartilage T2 and T2* mapping of the wrist: a comparison between 3- and 7-T MRI

Heiss,

Weber,

Balbach

et al. 2023

Eur Radiol Exp

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“…Furthermore, range of motion (ROM) of the wrist was evaluated according to our patient database. The early onset of osteoarthritis does not necessarily exhibit clinical symptoms [36,37]. Therefore, a further hypothesis of the study was that advanced stages of cartilage lesions correlate to a reduction of ROM.…”

Section: Discussionmentioning

confidence: 98%

Inter-Rater Reliability of Magnetic Resonance Imaging in Comparison to Computed Tomography and Wrist Arthroscopy in SLAC and SNAC Wrist

Terzis

Klinger

Seegmüller

et al. 2021

JCM

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The aim of the study was to assess the inter-rater reliability of magnetic resonance imaging (MRI) in comparison to computed tomography (CT) and wrist arthroscopy in patients with scapholunate (SLAC) or scaphoid non-union advanced collapse (SNAC) as well as to evaluate a grading score of cartilage lesions. A total of 42 patients (36 male, 6 female) at a mean age of 45 years (range: 19–65 years) with a SLAC or SNAC wrist who had a preoperative MRI and CT scan as well as underwent arthroscopy of the wrist between 2013 and 2018 were included in this study. Cartilage lesions, as assessed by MRI, CT and wrist arthroscopy, were classified by two hand surgeons in three stages. Inter-rater reliability was evaluated using the Kendall Tau-b test as well as the chi-square test to analyze for trend. The correlation between cartilage lesions, classified by arthroscopy and MRI, was low. A moderate correlation between CT and arthroscopy staging was shown. The highest inter-rater correlation was found between MRI and CT staging. An additionally performed logistic regression showed that progression of cartilage lesions as shown in MRI scans correlates with a restriction of range of motion (ROM). The level of cartilage lesion may be more severely classified in an MRI than during arthroscopy. Arthroscopy remains the gold standard in detecting cartilage lesions and thus in the decision-making process of the definitive treatment in carpal collapse.

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“…4 12 Because they offer some spatial resolution benefits, high-field systems at 3 T with dedicated multichannel coils are recommended. 4 12 17 However, in the clinical routine, 1.5-T systems are also suitable, provided that adequate multichannel coils are used. The 7-T systems, despite clinical approval by regulatory bodies, are not commonly available for routine clinical patient care.…”

Section: Cartilage Imagingmentioning

confidence: 99%

“…The current standard of reference for the noninvasive imaging of articular cartilage is MRI, used to establish the initial diagnosis of a cartilage lesion and for postsurgical monitoring of treatment outcomes. 4 12 Because they offer some spatial resolution benefits, high-field systems at 3 T with dedicated multichannel coils are recommended. 4 12 17 However, in the clinical routine, 1.5-T systems are also suitable, provided that adequate multichannel coils are used.…”

Section: Cartilage Imagingmentioning

confidence: 99%

“…4 In addition to morphological assessment of the cartilage and other relevant structures of the joint, MRI can provide biochemical information about cartilage composition. 4 12 Although MRI can visualize structural features of the repair site, correlations of postoperative MRI and clinical outcomes showed varied results. 13 14 The most commonly used scoring system for surgical cartilage repair is the Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score, primarily used in research.…”

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confidence: 99%

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Update: Posttreatment Imaging of the Knee after Cartilage Repair

Heiss

Guermazi

Janka

et al. 2022

Semin Musculoskelet Radiol

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Focal cartilage lesions are common pathologies at the knee joint that are considered important risk factors for the premature development of osteoarthritis. A wide range of surgical options, including but not limited to marrow stimulation, osteochondral auto- and allografting, and autologous chondrocyte implantation, allows for targeted treatment of focal cartilage defects. Arthroscopy is the standard of reference for the assessment of cartilage integrity and quality before and after repair. However, deep cartilage layers, intrachondral composition, and the subchondral bone are only partially or not at all visualized with arthroscopy. In contrast, magnetic resonance imaging offers noninvasive evaluation of the cartilage repair site, the subchondral bone, and the soft tissues of the joint pre- and postsurgery. Radiologists need to be familiar with the different surgical procedures available and their characteristic postsurgical imaging appearances to assess treatment success and possible complications adequately. We provide an overview of the most commonly performed surgical procedures for cartilage repair at the knee and typical postsurgical imaging characteristics.

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Update Knorpelbildgebung der kleinen Gelenke

Cited by 5 publications

References 56 publications

Variation in cartilage T2 and T2* mapping of the wrist: a comparison between 3- and 7-T MRI

Variation in cartilage T2 and T2* mapping of the wrist: a comparison between 3- and 7-T MRI

Inter-Rater Reliability of Magnetic Resonance Imaging in Comparison to Computed Tomography and Wrist Arthroscopy in SLAC and SNAC Wrist

Update: Posttreatment Imaging of the Knee after Cartilage Repair

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