Optimizing methods to quantify intramuscular fat in rotator cuff tears with normalization

Micevych, Paul S.; Garg, Ankur; Buchler, Lucas T.; Marra, Guido; Saltzman, Matthew D.; Parrish, Todd B.; Seitz, Amee L.

doi:10.1007/s00256-018-3090-6

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…Various studies have addressed the use of fat quantification by the Dixon technique combined with GRE or SE for evaluation of the musculature in diseases such as Duchenne muscular dystrophy (5,6,13,16) , as well as of the volume of the rotator cuff muscles (32)(33)(34) . The quantitative Dixon technique has been used in the analysis of fatty infiltration and muscle volume in patients with a torn rotator cuff, to assist in the indication of surgical repair (34) . The advantage of using the Dixon technique in such cases is that it enables volumetric analysis of the ventral surface of the muscle, whereas the Goutallier classification system presents low reproducibility, with evaluation restricted to a single slice (33) .…”

Section: Fat Quantificationmentioning

confidence: 99%

Applications of the Dixon technique in the evaluation of the musculoskeletal system

2021

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The acquisition of images with suppression of the fat signal is very useful in clinical practice and can be achieved in a variety of sequences. The Dixon technique, unlike other fat suppression techniques, allows the signal of fat to be suppressed in the postprocessing rather than during acquisition, as well as allowing the visualization of maps showing the distribution of water and fat. This review of the Dixon technique aims to illustrate the basic physical principles, to compare the technique with other magnetic resonance imaging sequences for fat suppression or fat quantification, and to describe its applications in the study of diseases of the musculoskeletal system. Many variants of the Dixon technique have been developed, providing more consistent separation of the fat and water signals, as well as allowing correction for many confounding factors. It allows homogeneous fat suppression, being able to be acquired in combination with several other sequences, as well as with different weightings. The technique also makes it possible to obtain images with and without fat suppression from a single acquisition. In addition, the Dixon technique can be used as a quantitative method, allowing the proportion of tissue fat to be determined, and, in more updated versions, can quantify tissue iron.

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Section: Fat Quantificationmentioning

confidence: 99%

Applications of the Dixon technique in the evaluation of the musculoskeletal system

2021

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“…In future studies, the presence of even a slightly elevated fat content in the affected muscles may be evaluated based on quantitative Dixon sequences or fat-fraction analysis on magnetic resonance imaging. 9,10 In addition, we suspect that sex-specific alterations in hip muscle morphology and function may exist because women and men with FAIS have shown significant differences in hip and pelvic kinematic patterns while performing functional tasks. 11 Finally, we cannot exclude that the presence of underlying morphologic bony characteristics typical of FAIS and hip instability (e.g., acetabular coverage, acetabular and femoral version, and neckshaft angle) may also affect hip muscular changes.…”

Section: See Related Article On Page 1445mentioning

confidence: 99%

Editorial Commentary: Do Patients With Femoroacetabular Impingement Syndrome Already Show Hip Muscle Atrophy?

Casartelli¹,

Sutter

Leunig³

2019

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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Muscle atrophy, fatty degeneration, and strength deficits of the hip abductors, flexors, and even external rotators are well-known clinical and radiologic findings in patients with advanced hip osteoarthritis. More recently, in the context of prearthritic hip diseases, the role of hip muscle function in femoroacetabular impingement syndrome (FAIS) has gained greater focus for hip surgeons. Several studies have shown that patients with FAIS present with activation deficits of the hip muscles, which may result in hip muscle weakness. Nevertheless, previous studies have yet to determine whether young and mainly active patients with FAIS already show hip muscle atrophy. Future research is required to further characterize hip muscle function in patients with FAIS. Of particular interest is the investigation of whether both qualitative (muscle fatty degeneration) and quantitative (muscle atrophy) morphologic alterations of the hip muscles are present in patients with FAIS, as well as whether these alterations are sex specific and/or related to the underlying hip morphology.

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Highlights of the Annual Scientific Meeting of the Society of Skeletal Radiology (SSR) 2018, Austin, Texas, USA

Fox

Bancroft

2018

Skeletal Radiol

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Optimizing methods to quantify intramuscular fat in rotator cuff tears with normalization

Cited by 6 publications

References 36 publications

Applications of the Dixon technique in the evaluation of the musculoskeletal system

Applications of the Dixon technique in the evaluation of the musculoskeletal system

Editorial Commentary: Do Patients With Femoroacetabular Impingement Syndrome Already Show Hip Muscle Atrophy?

Highlights of the Annual Scientific Meeting of the Society of Skeletal Radiology (SSR) 2018, Austin, Texas, USA

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