Strain Ultrasound Elastography of Muscles in Healthy Children and Healthy Adults

Purpose Standardized application and evaluation of the strain ultrasound elastography method (USE) by means of a strain color scale (SCS) and a strain ratio analysis. To determine differences in muscle elasticity in healthy children and adults. Materials and Methods Initially Mm. biceps brachii, Mm. recti femoris and Mm. gastrocnemii of 22 healthy adults were examined before and after exercise. Secondly measurements were obtained at rest in 21 healthy children. Results There was a difference in muscle elasticity between the upper and lower extremity. Muscle elasticity tends to be higher after exercise in healthy adults. SCS and strain ratio analysis show a similar trend. In comparison to adults, healthy children show lower muscle elasticity at rest using both analysis methods. Conclusion Strain elastography is an easy to perform, cost-effective, non-invasive method to determine muscle stiffness, if the conditions of standardized measurements are given. Key Points: Citation Format

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The Evaluation of Benign Acute Childhood Myositis by Ultrasound Elastography

Medical Science and Discovery ◽

10.36472/msd.v6i9.299 ◽

2019 ◽

Vol 6 (9) ◽

pp. 205-209

Author(s):

Gülay Güngör ◽

Olcay Güngör

Keyword(s):

Muscle Thickness ◽

Strain Ratio ◽

Muscle Stiffness ◽

Ultrasound Elastography ◽

Radiology Department ◽

Control Group ◽

Healthy Children ◽

The Mean ◽

Group 2 ◽

Group 1

Objective: Herein, we aimed to determine the diagnostic contribution of ultrasound elastography (UE) technique to the assessment of muscle stiffness in pediatric patients with myositis. Material and Methods: This study enrolled 16 patients who presented to our hospital’s Pediatric Neurology Outpatient Clinic with the complaint of inability to walk and who had a clinical presentation of benign acute childhood myositis (BACM). The patients were referred to the Radiology Department to undergo muscle ultrasonography (USG), where they underwent UE of the gastrocnemius muscle (GCM). Results: Children with myositis and healthy children are similar age (7.06 ± 1.52 year (5–11) vs. 7.00 ± 1.59 year (5–11) year) (P: 0.908) and body mass index (BMI) (20.04 ± 1.58 (18.6–24.2) vs. 22.08 ± 1.43 (19.9–24.4) (P: 0.946). The mean serum creatine kinase (CK) was measured as 1520.3 ± 1163.6 U/L (min: 456, max:4100) in children with myositis. In the children with myositis, the thickness of the medial and lateral GCM increased compared with that in control group (medial; 18.15 ± 3.02 mm vs 13.10 ± 2.26 mm, p<0.001, lateral; 13.51 ± 3.07 mm vs 9.34 ± 1.86 mm, p<0.001). The medial and lateral GCM ratio in group 1 was slight bigger than that in group 2 (medial; 1.10 ± 0.37 vs 1.00 ± 0.34, p: 0.274, lateral; 1.22 ± 0.44 vs 1.10 ± 0.29, p: 0.243). GCM strain values were mildly elevated in patients with myositis compared to controls. Conclusion: In the children with myositis, the thickness of the medial and lateral GCM increased compared with that in control group. GCM strain ratio values were slightly higher in myositis patients compared to the control group. We think that the increase in muscle thickness values is mainly secondary to the edema seen in myositis. In addition, UE is a clinically applicable quantitative analysis for changes in myositis.

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PRACTICAL CONSIDERATIONS FOR STANDARDIZED RECORDING OF MUSCLE MECHANICAL PROPERTIES USING A MYOMETRIC DEVICE: RECORDING SITE, MUSCLE LENGTH, STATE OF CONTRACTION AND PRIOR ACTIVITY

Journal of Musculoskeletal Research ◽

10.1142/s0218957718500100 ◽

2018 ◽

Vol 21 (02) ◽

pp. 1850010 ◽

Cited By ~ 1

Author(s):

Sandra Agyapong-Badu ◽

Martin Warner ◽

Dinesh Samuel ◽

Maria Stokes

Keyword(s):

Mechanical Properties ◽

Biceps Brachii ◽

Muscle Length ◽

Rectus Femoris ◽

Healthy Adults ◽

Muscle Stiffness ◽

Minimal Detectable Change ◽

Experimental Conditions ◽

Cross Sectional ◽

Resting Muscle

Purpose: This study aimed to systematically examine the influence of various muscle and experimental conditions on Myoton recordings. Methods: A cross-sectional, observational design was used to examine muscle conditions and experimental factors (different recording sites, muscle length, level of contraction and prior physical activity) that may influence reproducibility of Myoton recordings for biceps brachii (BB) and rectus femoris (RF). Fifty-three healthy adults (26 young, 27 older) aged 18–90 years were studied. Muscle stiffness, tone and elasticity were measured using the MyotonPRO device. Results: Statistically significant differences in Myoton parameters were found for aspects of all four muscle and experimental conditions compared with the control condition ([Formula: see text]). However, clinically relevant differences in tone, stiffness and elasticity were only found for contracted compared to resting muscle, with changes being greater than the minimal detectable change. Elasticity was not affected by prior activity. Conclusions: The conditions studied significantly altered Myoton parameters of BB and RF in healthy adults, but only changes in parameters during muscle contraction were clinically relevant. These findings provide evidence to support the need to consider muscle condition and experimental factors for improving the robustness of test protocols for assessing muscle mechanical properties using the MyotonPRO device.

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In vivo stiffness assessment of patellar and quadriceps tendons by strain ultrasound elastography

Bio-Medical Materials and Engineering ◽

10.3233/bme-206016 ◽

2021 ◽

pp. 1-10

Author(s):

Surangika Wadugodapitiya ◽

Makoto Sakamoto ◽

Sayaka Suzuki ◽

Yusuke Morise ◽

Koichi Kobayashi

Keyword(s):

Knee Flexion ◽

Quadriceps Tendon ◽

Strain Ratio ◽

Ultrasound Elastography ◽

Return To Sports ◽

Target Tissue ◽

Relative Stiffness ◽

Extension Mechanism ◽

Significant Difference

BACKGROUND: The patellar and quadriceps tendons are responsible for the extension mechanism of the knee joint and frequently become inflamed during sports. Diagnosis and determination of when an athlete can return to sports following these injuries are usually performed by assessing morphological features and functional outcomes. Nevertheless, mechanical properties are not being assessed. OBJECTIVE: To describe the stiffness characteristics of these two tendons over the range of knee flexion and to test the feasibility of using strain ultrasound elastography (SE). METHODS: SE with an acoustic coupler as the reference was performed for nine healthy males. Relative stiffness measurements were obtained using the strain ratio (SR = target tissue strain/reference strain) by placing the knee in five different flexion angles. Lower SR indicates higher relative stiffness. RESULTS: This study showed reliable measurement with good intra- and inter-rater agreement for SR at 30°. SR of the quadriceps tendon decreases as knee flexion increases, indicating increased relative stiffness. In the patellar tendon, no significant difference was observed between 30° and 60°. Beyond 60°, relative stiffness increased constantly. CONCLUSIONS: SE is a reproducible and feasible tool to monitor relative stiffness of the patellar and quadriceps tendons in routine clinical settings.

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Supraspinatus muscle elasticity measured with real time shear wave ultrasound elastography correlates with MRI spectroscopic measured amount of fatty degeneration

BMC Musculoskeletal Disorders ◽

10.1186/s12891-017-1911-8 ◽

2017 ◽

Vol 18 (1) ◽

Cited By ~ 5

Author(s):

Fabian Gilbert ◽

Detlef Klein ◽

Andreas Max Weng ◽

Herbert Köstler ◽

Benedikt Schmitz ◽

...

Keyword(s):

Real Time ◽

Shear Wave ◽

Fatty Degeneration ◽

Ultrasound Elastography ◽

Muscle Elasticity ◽

Supraspinatus Muscle ◽

Measured Amount

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Flu vax cost effective in healthy adults aged 50???64 years

Inpharma Weekly ◽

10.2165/00128413-200615330-00008 ◽

2006 ◽

Vol &NA; (1533-1534) ◽

pp. 5

Author(s):

&NA;

Keyword(s):

Cost Effective ◽

Healthy Adults

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Ultrasound Elastography: The New Frontier in Direct Measurement of Muscle Stiffness

Archives of Physical Medicine and Rehabilitation ◽

10.1016/j.apmr.2014.07.007 ◽

2014 ◽

Vol 95 (11) ◽

pp. 2207-2219 ◽

Cited By ~ 127

Author(s):

Joline E. Brandenburg ◽

Sarah F. Eby ◽

Pengfei Song ◽

Heng Zhao ◽

Jeffrey S. Brault ◽

...

Keyword(s):

Direct Measurement ◽

Muscle Stiffness ◽

Ultrasound Elastography ◽

New Frontier

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Ultrafast Ultrasound-Derived Muscle Strain Measure Correlates with Carotid Local Pulse Wave Velocity in Habitual Resistance-Trained Individuals

Applied Sciences ◽

10.3390/app11188783 ◽

2021 ◽

Vol 11 (18) ◽

pp. 8783

Author(s):

Hsin-Fu Lin ◽

Yi-Hung Liao ◽

Pai-Chi Li

Keyword(s):

Pulse Wave Velocity ◽

Resistance Exercise ◽

Strain Rate ◽

Wave Velocity ◽

Exercise Intensity ◽

Pulse Wave ◽

Muscle Stiffness ◽

Ultrasound Elastography ◽

Muscle Strain ◽

Post Exercise

Purpose: this study investigated the effects of the intensity of machine-based bicep curl resistance exercise on ultrafast ultrasound-derived muscle strain rate and carotid ultrafast pulse wave velocity (ufPWV), and examined the association between muscle strain rate, ufPWV, and established carotid function measures in habitual resistance-trained individuals. Methods: twenty-three young habitual resistance-trained males (age: 24 ± 1 year, body mass index = 24 ± 1 kg/m2) were recruited to participate in two bouts of acute bicep curl exercise. After one-repetition maximum determination (1RM), the participants were randomly assigned to engage in bicep curls at 40 or 80%1RM intensity (10 reps × five sets) by a crossover study design. The muscle strain rate of bicep muscle, carotid ufPWV during systole(ufPWV-sys), and diastole (ufPWV-dia) were obtained pre- and post-exercise. In addition, carotid function measures were calculated by obtained carotid diameter and central blood pressure changes. Results: compared with pre-exercise, the reduction in post-exercise muscle strain rate and its area under the curve of 80%1RM was greater than those of 40%1RM. Both ufPWV-sys and ufPWV-dia increased regardless of exercise intensity. Baseline bicep muscle strain rate correlated not only with ufPWV-sys (r = −0.71, p = 0.001), ufPWV-dia (r = −0.74, p = 0.001), but also carotid compliance (r = 0.49, p = 0.02), distensibility (r = 0.54, p = 0.01) and ß stiffness (r= −0.84, p < 0.0001). The ufPWVs also correlated with ß stiffness (r = 0.64–0.76, p = 0.01). Conclusion: muscle stiffness measured by ultrafast ultrasound elastography increases positively with resistance exercise intensity, and it appears to correlate with carotid ufPWV and established carotid function measures in habitual resistance-trained individuals.

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