Muscle hardness measurement by using ultrasound elastography: a feasibility study

Niitsu, Mamoru; Michizaki, Akie; Endo, Asako; Takei, Hiroyuki; Yanagisawa, Osamu

doi:10.1258/ar.2010.100190

Cited by 130 publications

(113 citation statements)

References 21 publications

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“…Especially muscle injury can be more easily caused after centrifugal exercise, which will lead to liquid containing protein permeating and piling in muscle fiber and then producing SD [4]. It is indicated in researches that phenomenon that there is obvious SD in upper arm is indeed caused after fatiguing exercise, and it is consistent with the opinion proposed in previous researches [5] that fatiguing exercise causes muscle injury and then promote swelling of bicep circumference. So these debris causing muscle swelling shall be stopped to produce and eliminated speedily, so as to avoid imposing adverse influence on exercise performance and feeling of comfort due to hurt from muscle swelling.…”

Section: Discussionsupporting

confidence: 82%

The effect of different recovery methods on muscle swelling recovery after muscle fatigue

Zhang¹,

Zhu-ying²

2017

Proceedings of the 2017 International Conference on Sports, Arts, Education and Management Engineering (SAEME 2017)

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Abstract. This paper's purpose is to investigate the effect of passive recovery (PR), active recovery (AR), vibration recovery (VR) and cryotherapy recovery (CR) on muscle swelling Degree (SD) after muscle fatigue. 20 healthy male college students were enrolled in the study. SD of the biceps brachii of the non-handedness was measured. The differences and recovery effects of SD at different detection time points were tested by one-way repeated measures ANOVA. Results shows that Continuous AR of decreasing intensity cannot improve recovery of fatigue muscle and even increase SD after active concentric contraction and passive pulling at constant speed in low intensity of 45 °/s. In addition, CR can effectively control tissue injury and SD problem due to centrifugal motion.

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Section: Discussionsupporting

confidence: 82%

The effect of different recovery methods on muscle swelling recovery after muscle fatigue

Zhang¹,

Zhu-ying²

2017

Proceedings of the 2017 International Conference on Sports, Arts, Education and Management Engineering (SAEME 2017)

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“…However, they usually appear so lucent that the EIs cannot be measured. 2 A material with enough strain values for measurement was applied to the evaluation of the elbow muscles before and after exercise in a previous study. 2 However, this material was overly large for its application to the masseter muscle.…”

Section: Discussionmentioning

confidence: 99%

“…2 A material with enough strain values for measurement was applied to the evaluation of the elbow muscles before and after exercise in a previous study. 2 However, this material was overly large for its application to the masseter muscle. Chino et al 1 and Akagi et al 14 described an interesting method to quantify the muscle hardness through the simultaneous use of two references with known elasticity.…”

Section: Discussionmentioning

confidence: 99%

“…A member of the same research group reported a similar hardness of the GM using shearwave type sonoelastography (27.6 ± 7.3 and 33.4 ± 6.3 kPa of the lateral and medial GM, respectively) based on the Young's modulus. 14 Even after considering that the Young's moduli can be three-folds of the shear moduli, 1,2,8 the variations were still relatively wide. There are several possible explanations for this discrepancy; anisotropic properties in the human skeletal muscle may be a cause in addition to the differences in modulus and devices used for the measurements.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4] Additionally, in cases of temporomandibular disorder with myofascial pain, the hardness of the masseter muscle is frequently found to be increased, according to the measurements obtained by a hardness metre. [5][6][7] However, the hardness metre can measure only certain points, and the results might not reflect the total muscle change.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the masseter muscle elasticity with the use of acoustic coupling agents as references in strain sonoelastography

Nakayama

Ariji²,

Nishiyama³

et al. 2015

Dentomaxillofacial Radiology

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Objectives: To verify the use of a single coupling agent as a reference to obtain the elasticity index (EI) ratios and to investigate the EI ratios of the masseter muscles of healthy volunteers. Methods: Muscle phantoms with known elasticity (20, 40 and 60 kPa in the Young's modulus) were examined by strain-type sonoelastography using a coupling agent as the reference. Eight examiners tested soft (with 7 kPa) and hard (with 40 kpa) reference coupling agents separately. The correlation coefficients were determined between the EI ratio and Young's modulus of muscle phantoms. The interclass correlation coefficients were calculated for inter-and intraexaminer agreement. Results: Strong correlations were found between the EI ratios and Young's modulus for both soft and hard references. The variations of the EI ratios were larger with soft coupling agents than those with hard coupling agents, and they increased in phantoms with 60 kPa elasticity. There were no differences in the EI ratios of the masseter muscle at rest between males and females or between the right and left sides. The ratio increased during clenching. Conclusions: The hard reference coupling agent was suitable for obtaining EI ratio of the masseter muscle. No differences were found in the EI ratios of the masseter muscle either between sexes or between the right and left sides at rest, and the ratios increased with the widening of their variations during clenching.

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Functions of the subregions of the supraspinatus muscle

et al. 2017

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The aim of this study was to investigate the functions of the six subregions of the supraspinatus muscle (SSP) determined by Kim et al. in Clin Anat 2007;20:648-655, using real-time tissue elastography (RTE). Twelve young male volunteers participated. The muscular hardness of the SSP was measured at rest and with contraction of the MMT3 in internal, neutral and external rotations. The SSP was functionally divided into five groups on the basis of the RTE results. These functional areas were roughly classified into three property groups: the anterior-superficial, anterior-middle, and anterior-deep subregions, which produce contractile force for abduction; the posterior-deep subregion, which produces contractile force for external rotation; and the posteriorsuperficial and posterior-middle subregions, which maintain tension. RTE was appropriate for measuring the functions of these muscular subregions. Clin.

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Muscle hardness measurement by using ultrasound elastography: a feasibility study

Abstract: US elastography is feasible to measure muscle hardness and to produce a two-dimensional hardness map of the muscle.

Cited by 130 publications

References 21 publications

The effect of different recovery methods on muscle swelling recovery after muscle fatigue

The effect of different recovery methods on muscle swelling recovery after muscle fatigue

Evaluation of the masseter muscle elasticity with the use of acoustic coupling agents as references in strain sonoelastography

Functions of the subregions of the supraspinatus muscle

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