scholarly journals Real-time shear wave elastography evaluation of the correlation between brain tissue stiffness and body mass index in premature neonates

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Jiabing Wang ◽  
Zhilong Zhang ◽  
Xin Xu ◽  
Xuefeng Lu ◽  
Tingting Wu ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Real Time ◽  
Brain Tissue ◽  
Shear Wave ◽  
Body Mass ◽  
Shear Wave Elastography ◽  
Tissue Stiffness ◽  
Premature Neonates

scholarly journals Quantitative assessment of middle deltoid elasticity during different shoulder abduction using shear wave elastography: A preliminary study

2020 ◽  
Author(s):  
Lei Wang ◽  
Xi Xiang ◽  
Bihui Zhu ◽  
Li Qiu
Keyword(s):  
Body Mass Index ◽  
Shear Wave ◽  
Body Mass ◽  
Shear Wave Elastography ◽  
Shoulder Abduction ◽  
Reference Ranges ◽  
Distribution Method ◽  
Normal Reference ◽  
Potential Factors ◽  
Healthy Participants

Abstract Background: To measure the middle deltoid (MD) muscle elasticity during different shoulder abduction in healthy participants using shear wave elastography (SWE) and analyze the factors that may affect the MD elasticity, and then to establish the reference ranges of the normal MD elasticity during different shoulder abduction. Methods: Mean shear wave velocity (SWV) of the MD in 70 healthy participants were evaluated at left and right shoulder 0° and 90° abduction (L0°, R0°, L90°, R90°) using SWE, and potential factors that may affect MD elasticity including gender, MD thickness, age, body mass index were analyzed. Normal reference ranges of MD elasticity were calculated using normal distribution method. Results: Mean SWV was statistically significantly higher at L90° than L0°, higher at R90° than R0°, higher at R0° than L0°, and higher at R90° than L90° (all p< 0.0001). Mean SWV was significantly higher in males at both L0° (p< 0.05) and R0° (p< 0.01) than in females. Neither MD thickness, age nor body mass index influenced MD elasticity. Normal reference ranges of the MD elasticity were 2.4-3.1 m/s in males and 2.2-2.9 m/s in females at L0° and 2.5-3.3 m/s in males and 2.4-3.2 m/s in females at R0°, and were 4.9-6.7 m/s at L90°, 5.2-7.1 m/s at R90° for both males and females. Conclusions: Our results suggest that the normal MD elasticity at L0°, R0°, L90°, R90° are different and gender should be considered when determining the reference ranges of normal MD elasticity at L0° and R0° with SWE. These values may provide quantitative baseline measurements for assessment of the normal MD elasticity.

scholarly journals Quantitative assessment of middle deltoid elasticity during different shoulder abduction using shear wave elastography: A preliminary study

2020 ◽  
Author(s):  
Lei Wang ◽  
Xi Xiang ◽  
Bihui Zhu ◽  
Li Qiu
Keyword(s):  
Body Mass Index ◽  
Shear Wave ◽  
Body Mass ◽  
Shear Wave Elastography ◽  
Shoulder Abduction ◽  
Reference Ranges ◽  
Distribution Method ◽  
Males And Females ◽  
Potential Factors ◽  
Active Abduction

Abstract Background: To measure the middle deltoid (MD) elasticity in healthy participants during different shoulder abduction (with bilateral shoulder in 0 degree abduction and 90 degree active abduction) using shear wave elastography (SWE) and analyze the factors that may affect the MD elasticity, and the objective of this study is to establish the reference ranges of normal MD elasticity during different shoulder abduction by using SWE. Methods: Mean shear wave velocity (SWV) of the MD in 70 healthy right-handed participants (35 females, 35 males) were evaluated using SWE during different shoulder abduction, and potential factors that may affect MD elasticity including gender, MD thickness, age, body mass index were analyzed. Different shoulder abduction positions of each participant were as follows: (i) 0° abduction of bilateral shoulder (L0° and R0°), (ii) 90° active abduction of bilateral shoulder (L90° and R90°). Reference ranges of normal MD elasticity were calculated using normal distribution method. Results: Mean SWV was significantly higher at L90° than L0°, higher at R90° than R0°, higher at R0° than L0°, and higher at R90° than L90° (all p< 0.0001). Mean SWV was significantly higher in males at both L0° (p< 0.05) and R0° (p< 0.01) than in females. Neither MD thickness, age nor body mass index influenced MD elasticity. Normal reference ranges of the MD elasticity were 2.4-3.1 m/s in males and 2.2-2.9 m/s in females at L0° and 2.5-3.3 m/s in males and 2.4-3.2 m/s in females at R0°, and were 4.9-6.7 m/s at L90°, 5.2-7.1 m/s at R90° for both males and females. Conclusions: Our results suggest that the normal MD elasticity at L0°, R0°, L90°, and R90° with SWE are different. A separate reference range of normal MD elasticity at L0°, R0°, L90°, and R90° should be used. Moreover, the reference ranges of normal MD elasticity at L0° and R0° shoulder be divided by gender. These values may serve as quantitative baseline measurements for assessment of normal MD elasticity.

scholarly journals Determining the effects of excess weight on renal cortical stiffness in children and adolescents with point Shear Wave Elastography

2021 ◽  
Author(s):  
Zehra Filiz Karaman ◽  
Fatih Kardas
Keyword(s):  
Body Mass Index ◽  
Children And Adolescents ◽  
Shear Wave ◽  
Body Mass ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Shear Wave Elastography ◽  
Excess Weight ◽  
The Mean ◽  
Lean Children

Aim: To determine the early effects of excess weight on renal cortical stiffness in children and adolescents using point shear wave elastography (pSWE). Materials and methods: One hundred and forty-six overweight and obese children (43.2% male; mean age, 12.6±2.9 years: range 4.3-18) and 48 lean children (27.1% male: mean age, 12.4±3.4: range 4.8-18.9) were included in the study and control group, respectively. pSWE measurements of the two kidneys were performed. The mean value of shear wave velocity was compared between groups. Results: The mean shear wave velocity was 2.79±0.53 m/s for the control subjects and 3.09±0.59 m/s for the overweight-obese subjects. The differences between the two groups were sta-tistically significant (p=0.001). There was no correlation between shear wave velocity and age or depth. A positive correlation was found between shear wave velocity and body mass index, body mass index-standard deviation score. Conclusion: Renal cortical stiffness was higher in children with excess weight than in lean children. This study is the first attempt at applying pSWE to investigate the early adverse effects of excess weight.

scholarly journals Quantitative assessment of normal middle deltoid muscle elasticity at various arm abduction using ultrasound shear wave elastography

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lei Wang ◽  
Xuanyan Guo ◽  
Li Tan ◽  
Qin Chen
Keyword(s):  
Body Mass Index ◽  
Shear Wave ◽  
Body Mass ◽  
Shear Wave Elastography ◽  
Deltoid Muscle ◽  
Reference Ranges ◽  
Factors Affecting ◽  
Males And Females ◽  
Potential Factors ◽  
Active Abduction

AbstractThe objective of this study is to assess the change in the normal MD elasticity using shear wave elastography (SWE) through measuring the middle deltoid (MD) elasticity in healthy participants at various arm abduction (with bilateral arms at 0 degrees abduction and 90 degrees active abduction) and analyzing the factors affecting normal MD elasticity. Mean shear wave velocity (SWV) of the MD in healthy right-handed participants were evaluated using SWE at different arm abduction, and potential factors (gender, MD thickness, age, body mass index) affecting MD elasticity were analyzed. Different arm abduction positions of each participant were as follows: (i) 0° abduction of bilateral arm (L0° and R0°), (ii) 90° active abduction of bilateral arm (L90° and R90°). Mean SWV was significantly higher at L90° than L0°, higher at R90° than R0°, higher at R0° than L0°, and higher at R90° than L90° (all P < 0.0001). SWV was significantly higher in males at both L0° (P < 0.05) and R0° (P < 0.01) than in females. Neither MD thickness, age nor body mass index influenced MD elasticity. Reference ranges of normal MD elasticity were 2.4–3.1 m/s in males and 2.2–2.9 m/s in females at L0° and 2.5–3.3 m/s in males and 2.4–3.2 m/s in females at R0°, and were 4.9–6.7 m/s at L90°, 5.2–7.1 m/s at R90° for both males and females. SWE is a feasible technique to assess normal MD elasticity at various arm abduction. Our results suggest that normal MD elasticity at L0°, R0°, L90°, and R90° with SWE are different. Moreover, these reference ranges may serve as quantitative baseline measurements for assessment of normal MD elasticity in the future.

Feasibility of transient elastography versus real-time two-dimensional shear wave elastography in difficult-to-scan patients

2016 ◽  
Vol 51 (11) ◽  
pp. 1354-1359 ◽  
Author(s):  
Benjamin Staugaard ◽  
Peer Brehm Christensen ◽  
Belinda Mössner ◽  
Janne Fuglsang Hansen ◽  
Bjørn Stæhr Madsen ◽  
...  
Keyword(s):  
Real Time ◽  
Shear Wave ◽  
Transient Elastography ◽  
Shear Wave Elastography ◽  
Two Dimensional

scholarly journals Which factors influence liver stiffness measured by real-time two dimensional shear wave elastography in patients on maintenance hemodialysis?

2021 ◽  
Vol 62 (1) ◽  
pp. 34-43
Author(s):  
Danijela Zjačić Puljiz ◽  
Ivana Kristina Delić Jukić ◽  
Marko Puljiz ◽  
Lučana Vicelić Čutura ◽  
Iva Jerčić Martinić-Cezar ◽  
...  
Keyword(s):  
Real Time ◽  
Shear Wave ◽  
Liver Stiffness ◽  
Shear Wave Elastography ◽  
Maintenance Hemodialysis ◽  
Two Dimensional

Comparison of peritumoral stromal tissue stiffness obtained by shear wave elastography between benign and malignant breast lesions

2018 ◽  
Vol 59 (10) ◽  
pp. 1168-1175 ◽  
Author(s):  
Hye Sun Park ◽  
Hee Jung Shin ◽  
Ki Chang Shin ◽  
Joo Hee Cha ◽  
Eun Young Chae ◽  
...  
Keyword(s):  
Shear Wave ◽  
Malignant Tumors ◽  
Shear Wave Elastography ◽  
Breast Cancers ◽  
Tissue Stiffness ◽  
Linear Arrangement ◽  
Luminal B ◽  
Tumor Subtypes ◽  
Stromal Tissue ◽  
Malignant Breast

Background Aggressive breast cancers produce abnormal peritumoral stiff areas, which can differ between benign and malignant lesions and between different subtypes of breast cancer. Purpose To compare the tissue stiffness of the inner tumor, tumor border, and peritumoral stroma (PS) between benign and malignant breast masses by shear wave elastography (SWE). Material and Methods We enrolled 133 consecutive patients who underwent preoperative SWE. Using OsiriX commercial software, we generated multiple 2-mm regions of interest (ROIs) in a linear arrangement on the inner tumor, tumor border, and PS. We obtained the mean elasticity value (Emean) of each ROI, and compared the Emean between benign and malignant tumors. Odds ratios (ORs) for prediction of malignancy were calculated. Subgroup analyses were performed among tumor subtypes. Results There were 85 malignant and 48 benign masses. The Emean of the tumor border and PS were significantly different between benign and malignant masses ( P < 0.05 for all). ORs for malignancy were 1.06, 1.08, 1.05, and 1.04 for stiffness of the tumor border, proximal PS, middle PS, and distal PS, respectively ( P < 0.05 for all). Malignant masses with a stiff rim were significantly larger than malignant masses without a stiff rim, and were more commonly associated with the luminal B and triple negative subtypes. Conclusion Stiffness of the tumor border and PS obtained by SWE were significantly different between benign and malignant masses. Malignant masses with a stiff rim were larger in size and associated with more aggressive pathologic subtypes.

The impact of body position and exercise on the measurement of liver Young’s modulus by real-time shear wave elastography

2021 ◽  
pp. 1-10
Author(s):  
Xia Jiang ◽  
Li Li ◽  
Hong-Yuan Xue
Keyword(s):  
Healthy Volunteers ◽  
Real Time ◽  
Young’S Modulus ◽  
Shear Wave ◽  
Supine Position ◽  
Young's Modulus ◽  
Body Position ◽  
Shear Wave Elastography ◽  
Lateral Position ◽  
Left Lateral Position

BACKGROUND: In the past ten years, liver biopsies have been used as a method to accurately diagnose the stage of fibrosis. OBJECTIVE: This study aimed to evaluate whether body position and exercise affect the measurement of liver Young’s modulus of healthy volunteers by real-time shear wave elastography (RT-SWE). Methods: RT-SWE was used to measure liver Young’s modulus in the supine and left lateral positions of 70 healthy volunteers at rest and measure the liver Young’s modulus in the lying position before exercise, and at zero, five, and ten minutes of rest after exercise. RESULTS: The liver Young’s modulus in the left lateral position was significantly higher than in the supine position (P< 0.05), and the measured value in the supine position was more stable than the left lateral position. The liver Young’s modulus measured at zero minutes after exercise was significantly higher than that measured before exercise (P< 0.05). The liver Young’s modulus measured at five minutes after exercise was significantly higher than that measured at zero minutes after exercise (P<0.05) and was not statistically different from the measured value before exercise (P> 0.05). The liver Young’s modulus measured at ten minutes after exercise was significantly higher from that measured at zero minutes after exercise (P< 0.05) and was not statistically different from the measured value at five minutes after exercise (P> 0.05). CONCLUSION: Body position and exercise have a significant impact on the measurement of liver Young’s modulus. It is recommended that the examinees take a supine position during the measurement, and measurement should be conducted at least ten minutes after exercise.

Real-Time X-Plane Shear Wave Elastography Feasibility on Philips 2D xMatrix Transducer

2018 ◽  
Author(s):  
Man M Nguyen ◽  
Sheng-Wen Huang ◽  
Shiwei Zhou ◽  
Chanzhona Hu ◽  
Nik Ledoux ◽  
...  
Keyword(s):  
Real Time ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Plane Shear
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