Skeletal Muscle Ultrasound: Correlation Between Fibrous Tissue and Echo Intensity

Pillen, Sigrid; Tak, Ramon O.; Zwarts, Machiel J.; Lammens, Martin; Verrijp, Kiek; Arts, Ilse M.P.; Laak, Jeroen van der; Hoogerbrugge, Peter M.; Engelen, B.G.M. van; Verrips, Aad

doi:10.1016/j.ultrasmedbio.2008.09.016

Cited by 502 publications

(461 citation statements)

References 13 publications

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“…a muscle becomes whiter in appearance [11,13,36]. It is thought that the replacement of muscle tissue with fat and fibrosis is the main cause of increased muscle echo intensity, as they increase the number of reflections within the muscle and therefore the mean grey value of the muscle in the ultrasound image (Fig 3) [29,35,37]. Markedly increased muscle echo intensity can easily be detected visually (Fig 7).…”

Section: Muscle Ultrasound In Neuromuscular Disordersmentioning

confidence: 99%

Skeletal muscle ultrasound

Pillen

2010

Eur J Transl Myol

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Muscle ultrasound is a convenient technique to visualize normal and pathological muscle tissue as it is non-invasive and real-time. Neuromuscular disorders give rise to structural muscle changes that can be visualized with ultrasound: atrophy can be objectified by measuring muscle thickness, while infiltration of fat and fibrous tissue increase muscle echo intensity, i.e. the muscles become whiter on the ultrasound image. Muscle echo intensity need to be quantified to correct for age-related increase in echo intensity and differences between individual muscles. This can be done by gray scale analysis, a method that can be easily applied in daily clinical practice. Using this technique it is possible to detect neuromuscular disorders with predictive values of 90 percent. Only in young children and metabolic myopathies the sensitivity is lower. Ultrasound is a dynamic technique and therefore capable of visualizing normal and pathological muscle movements. Fasciculations can easily be differentiated from other muscle movements. Ultrasound appeared to be even more sensitive in detecting fasciculations compared to EMG and clinical observations, because it can visualize a large muscle area and deeper located muscles. With improving resolution and frame rate it has recently become clear that also smaller scale spontaneous muscle activity such as fibrillations can be detected by ultrasound. This opens the way to a broader use of muscle ultrasound in the diagnosis of peripheral nerve and muscle disorders.

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Section: Muscle Ultrasound In Neuromuscular Disordersmentioning

confidence: 99%

Skeletal muscle ultrasound

Pillen

2010

Eur J Transl Myol

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“…Additional advantages of US are high discriminating ability, low cost, fast execution, and non-X-ray dependent nature. Structural abnormalities quantified with US may reflect muscle function or strength [14][15][16] . Moreover, US has been proposed as a reliable method for monitoring the extent of sarcopenia measuring muscle thickness, especially of musculus vastus medialis and musculus intermedius [11] .…”

Section: Usmentioning

confidence: 99%

Imaging of skeletal muscle in vitamin D deficiency

Bignotti

Cadoni

Martinoli

et al. 2014

WJR

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Elderly people are prone to accidental falls and one of the main risk factor is considered muscle weakness. Several studies focused on muscle weakness and muscle morphology changes in the elderly that may be associated with vitamin D deficiency. The prevalence of vitamin D deficiency is higher than previously though representing an important issue for public health and prevention. There is an increased interest in vitamin D effects in skeletal muscle and imaging modalities are particularly involved in this field. In patients with vitamin D deficiency, ultrasound, computed tomography, densitometry and magnetic resonance imaging (MRI) can efficiently describe changes in muscle morphology and size. Moreover, new imaging modalities, such as MRI spectroscopy, may improve knowledge about the metabolic effects of vitamin D in skeletal muscle. In this narrative review we will discuss the role of skeletal muscle imaging in vitamin D-deficient individuals. The aim of this paper is to improve and encourage the role of radiologists in this field.

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“…To do so, the authors arbitrarily defined subclinical tendinopathy as "the presence of either light structural changes in association with at least mild neovascularization or moderate/severe structural changes with/without neovascularization" [23]. In the study, however, the determination of structural changes was done by quantitative assessments of tendon echo intensity and size and by qualitative analysis of the B-mode ultrasound images of both the dominant and non-dominant side, which is a very subjective technique and can depend greatly on the ultrasound scanner settings [24]. On the contrary, texture features that can be calculated on the B-mode ultrasound image are intensity-invariant and have proven to be informative in the characterization of various tissues, such as breast [25], ovarian tumors [26], thyroid lesions [27], liver [28], and recently also in musculoskeletal images [29].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Patellar Tendon Abnormality in Asymptomatic Professional “Pallapugno” Players: A Texture-Based Ultrasound Approach

et al. 2018

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Featured Application: Quantitative texture analysis of tendon ultrasound images for determination of subclinical tendinopathy.Abstract: Abnormalities in B-mode ultrasound images of the patellar tendon often take place in asymptomatic athletes but it is still not clear if these modifications forego or can predict the development of tendinopathy. Subclinical tendinopathy can be arbitrarily defined as either (1) the presence of light structural changes in B-mode ultrasound images in association with mild neovascularization (determined with Power Doppler images) or (2) the presence of moderate/severe structural changes with or without neovascularization. Up to now, the structural changes and neovascularization of the tendon are evaluated qualitatively by visual inspection of ultrasound images. The aim of this study is to investigate the capability of a quantitative texture-based approach to determine tendon abnormality of "pallapugno" players. B-mode ultrasound images of the patellar tendon were acquired in 14 players and quantitative texture parameters were calculated within a Region of Interest (ROI) of both the non-dominant and the dominant tendon. A total of 90 features were calculated for each ROI, including 6 first-order descriptors, 24 Haralick features, and 60 higher-order spectra and entropy features. These features on the dominant and non-dominant side were used to perform a multivariate linear regression analysis (MANOVA) and our results show that the descriptors can be effectively used to determine tendon abnormality and, more importantly, the occurrence of subclinical tendinopathy.

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Skeletal Muscle Ultrasound: Correlation Between Fibrous Tissue and Echo Intensity

Cited by 502 publications

References 13 publications

Skeletal muscle ultrasound

Skeletal muscle ultrasound

Imaging of skeletal muscle in vitamin D deficiency

Quantitative Analysis of Patellar Tendon Abnormality in Asymptomatic Professional “Pallapugno” Players: A Texture-Based Ultrasound Approach

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