Differences in muscle thickness and echo intensity between stroke survivors and age- and sex-matched healthy older adults

Monjo, Hiroki; Fukumoto, Yoshihiro; Asai, Tsuyoshi; Kubo, Hajime; Oshima, Koichiro; Tajitsu, Hirotsugu; Koyama, Shota

doi:10.1298/ptr.e10018

Cited by 12 publications

(13 citation statements)

References 36 publications

(62 reference statements)

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“…Many studies have assessed changes in muscle quality using EI for deeper muscles. 6,7,[9][10][11]14,16,17 Our results demonstrate that the EI of these deeper muscles should be interpreted cautiously, as it may be less sensitive to muscle quality when compared with superficial muscles, with the possibility of underestimation of IntraMAT through a depth-dependent decrease in EI. Moreover, the interrater reliability for measuring the EI of the VI was only moderate, whereas that of the RF was strong for all focus depth conditions.…”

Section: Discussionmentioning

confidence: 78%

“…Echo intensity (EI) on B‐mode ultrasound (US) images, as a surrogate measure of muscle quality, was previously graded using the visual evaluation developed by Heckmatt et al 1 Currently, as a more sensitive and validated evaluation, quantification of EI using computer‐aided gray scale has been widely used 2–36 . EI is reportedly associated with muscle strength, 2,3,6 physical and cardiovascular performance, 3,12 and gait independence 11 .…”

Section: Introductionmentioning

confidence: 99%

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Influence of ultrasound focus depth on the association between echo intensity and intramuscular adipose tissue

et al. 2022

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Introduction/Aims: Attenuation of the ultrasound (US) wave is a serious limitation of echo intensity (EI) on B-mode US. The aim of this study was to determine whether the focus depth of US images influences the depth-dependent attenuation of EI and the relationship between EI and intramuscular adipose tissues (IntraMAT). Methods: The rectus femoris (RF) and vastus intermedius (VI) of the right thigh were studied in 135 adults (92 older, 43 younger). The EI on US images was measured at three focus depth conditions: top of the image, center of the RF, and center of the VI. The depth of the region of interest (ROI) was measured. IntraMAT was calculated using water and fat images based on the two-point Dixon technique with a 3.0-T magnetic resonance imaging scanner.Results: The correlation between EI and IntraMAT was stronger in the focus RF and VI conditions than in the focus top condition and stronger for RF than for VI. The depth of the ROI influenced the IntraMAT-adjusted residual EI more in the focus top condition than in the focus RF and VI conditions, and influenced VI more strongly than it did RF. Discussion: By mitigating EI attenuation, EI with a focus depth adjusted to the ROI reflected IntraMAT more accurately than that without adjustment. However, it may not completely prevent the potential influence of depth-dependent attenuation of EI, especially for deeper muscles such as the VI.

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Influence of ultrasound focus depth on the association between echo intensity and intramuscular adipose tissue

et al. 2022

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“…The ultrasound measurements performed in this study have been described previously. 7 11 Briefly, the following individual muscles on both the paretic and nonparetic sides were measured using B-mode ultrasound imaging (LOGIQ e, GE Healthcare UK, Chalfont, Buckinghamshire, England) with a multifrequency linear transducer operating at 8–12 MHz: rectus abdominis, external oblique (EO), internal oblique (IO), transversus abdominis, rectus femoris (RF), vastus intermedius, vastus lateralis (VL), vastus medialis, tibialis anterior (TA), gastrocnemius, and soleus. 16 17 18 The measurement position and site for each muscle are listed in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…The paretic side was found to exhibit negative changes in muscle quantity and quality compared with the nonparetic side or healthy controls, with these changes varying between different anatomical sites. 7 10 11 …”

Section: Introductionmentioning

confidence: 99%

Changes in Muscle Thickness and Echo Intensity in Chronic Stroke Survivors: A 2-Year Longitudinal Study

Monjo¹,

Fukumoto

Asai

et al. 2022

J Clin Neurol

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Background and Purpose The objective of this study was to identify 2-year longitudinal changes in the muscle thickness (MT) and echo intensity (EI) of the abdominal, thigh, and lower limb muscles in chronic stroke survivors. Methods This study included 15 chronic stroke survivors aged 74.1±9.9 years. The MT, EI, and subcutaneous fat thickness values of the following muscles on the paretic and nonparetic sides were assessed on transverse ultrasound images: rectus abdominis, external oblique, internal oblique, transversus abdominis, rectus femoris (RF), vastus intermedius, vastus lateralis (VL), vastus medialis, tibialis anterior, gastrocnemius, and soleus. The ultrasound measurements were performed both at baseline and 2 years later. Results After 2 years, the VL on the paretic side showed a significant decrease in MT ( p =0.031) and increase in EI ( p =0.002), whereas the RF on the nonparetic side showed a significant decrease in EI ( p =0.046). Correlation coefficient analyses showed that changes in MT ( r =0.668, p =0.012) and EI ( r =0.597, p =0.018) of the VL on the paretic side were significantly associated with a change in the body mass index. Conclusions The findings of this longitudinal study suggest that the VL on the paretic side is subject to deteriorations in muscle quantity and quality, and conversely that the RF on the nonparetic side shows an improvement in muscle quality after 2 years in chronic stroke survivors.

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“…13 It is able to distinguish muscle tissue from subcutaneous fat and measure the thickness and CSA of muscle, and is widely used to diagnose and follow-up the muscle condition of stroke patients. 14 Monjo et al 15 showed that the thickness of the quadriceps femoris on the paretic side was thinner than that on the nonparetic side in the stroke survivors. Shear wave elastography (SWE) is a quantitative imaging technology that allows the measurement of the hardness of human tissues, and it has already been applied clinically to evaluate muscle stiffness.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of Biceps Brachii Muscle by Shear Wave Elastography in Stroke Patients

Hongqin¹,

Gan²,

Li³

et al. 2022

TCRM

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The present study aimed to investigate the differences in muscle size and shear wave speed (SWS) values of biceps brachii muscle (BBM) between stroke survivors and healthy controls. Methods: This study comprised 61 stroke survivors and 24 healthy subjects, examined at Guangzhou First People's Hospital within one year. Each participant underwent ultrasonic examinations for recording some specific measurement indicators, including muscle thickness, cross-sectional area (CSA), and shear wave speed (SWS) of BBM. The muscular tension of the paretic arm was scored using the modified Ashworth scale (MAS). These above-mentioned indexes were compared between stroke survivors and healthy controls. Also, the correlations among SWS and MAS scores were assessed. Results: When the lifting arm angle was set for 45°, the CSA and muscle thickness of BBM were obviously decreased in the paretic arms of stroke subjects compared to the non-paretic arms as well as the arms of healthy controls. Moreover, the paretic arms had obviously higher SWS than the non-paretic arms and the healthy arms at 45° or 90°. When the angles of paretic arms were lifted at 90° and 45°, respectively, a positive correlation was established between MAS and SWS. Conclusion: Ultrasonic examination assessing muscle thickness, CSA, and SWS of the BBM could be used as a means of assessment of the paretic arms of stroke survivors.

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Differences in muscle thickness and echo intensity between stroke survivors and age- and sex-matched healthy older adults

Cited by 12 publications

References 36 publications

Influence of ultrasound focus depth on the association between echo intensity and intramuscular adipose tissue

Influence of ultrasound focus depth on the association between echo intensity and intramuscular adipose tissue

Changes in Muscle Thickness and Echo Intensity in Chronic Stroke Survivors: A 2-Year Longitudinal Study

Quantitative Evaluation of Biceps Brachii Muscle by Shear Wave Elastography in Stroke Patients

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