In Vivo Measurement of Brain Tumor Elasticity Using Intraoperative Shear Wave Elastography

2015 ◽  
Vol 37 (06) ◽  
pp. 584-590 ◽  
Author(s):  
D. Chauvet ◽  
M. Imbault ◽  
L. Capelle ◽  
C. Demene ◽  
M. Mossad ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
In Vivo Measurement

Effect of Rest Duration Between Static Stretching on Passive Stiffness of Medial Gastrocnemius Muscle In Vivo

2020 ◽  
Vol 29 (5) ◽  
pp. 578-582
Author(s):  
Masatoshi Nakamura ◽  
Shigeru Sato ◽  
Ryosuke Kiyono ◽  
Nobushige Takahashi ◽  
Tomoichi Yoshida
Keyword(s):  
Elastic Modulus ◽  
Shear Wave ◽  
Repeated Measures ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Medial Gastrocnemius ◽  
Static Stretching ◽  
Shear Elastic Modulus ◽  
Before And After

Context: In clinical and sports settings, static stretching (SS) is usually performed to increase range of motion (ROM) and decrease passive muscle stiffness. Recently, the shear elastic modulus was measured by ultrasonic shear wave elastography as an index of muscle stiffness. Previous studies reported that the shear elastic modulus measured by ultrasound shear wave elastography decreased after SS, and the effects of SS on shear elastic modulus were likely affected by rest duration between sets of SS. Objective: To investigate the acute effects of SS with different rest durations on ROM and shear elastic modulus of gastrocnemius and to clarify whether the rest duration between sets of SS decreases the shear elastic modulus. Design: A randomized, repeated-measures experimental design. Setting: University laboratory. Participants: Sixteen healthy males volunteered to participate in the study (age 21.3 [0.8] y; height 171.8 [5.1] cm; weight 63.1 [4.5] kg). Main Outcome Measures: Each participant underwent 3 different rest interval durations during SS (ie, long rest duration: 90 s; normal rest duration: 30 s; and short rest duration: 10 s). This SS technique was repeated 10 times, thus lasting a total of 300 seconds with different rest durations in each protocol. The dorsiflexion ROM and shear elastic modulus were measured before and after SS. Results: Our results revealed that dorsiflexion ROM and shear elastic modulus were changed after 300-second SS; however, no effects of the rest duration between sets of SS were observed. Conclusions: In terms of decreasing the shear elastic modulus, clinicians and coaches should not focus on the rest duration when SS intervention is performed.

scholarly journals In Vivo Assessment of Lower Limb Muscle Stress State Based on Shear Wave Elastography

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 122185-122196
Author(s):  
Jing Liu ◽  
Kunyang Wang ◽  
Jianan Wu ◽  
Huaibin Miao ◽  
Zhihui Qian ◽  
...  
Keyword(s):  
Stress State ◽  
Shear Wave ◽  
Lower Limb ◽  
Shear Wave Elastography ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Muscle Stress ◽  
In Vivo Assessment

scholarly journals In Vivo Evaluation of Cervical Stiffness Evolution during Induced Ripening Using Shear Wave Elastography, Histology and 2 Photon Excitation Microscopy: Insight from an Animal Model

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0133377 ◽  
Author(s):  
Laura Peralta ◽  
Eve Mourier ◽  
Christophe Richard ◽  
Gilles Charpigny ◽  
Thibaut Larcher ◽  
...  
Keyword(s):  
Animal Model ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
In Vivo Evaluation ◽  
Photon Excitation

Supersonic Shear Wave Elastography for the In Vivo Evaluation of Transepithelial Corneal Collagen Cross-Linking

2014 ◽  
Vol 55 (3) ◽  
pp. 1976 ◽  
Author(s):  
David Touboul ◽  
Jean-Luc Gennisson ◽  
Thu-Mai Nguyen ◽  
Antoine Robinet ◽  
Cynthia J. Roberts ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Cross Linking ◽  
In Vivo Evaluation ◽  
Collagen Cross Linking ◽  
Corneal Collagen

scholarly journals Evaluation of Elastic Stiffness in Healing Achilles Tendon After Surgical Repair of a Tendon Rupture Using In Vivo Ultrasound Shear Wave Elastography

2016 ◽  
Vol 22 ◽  
pp. 1186-1191 ◽  
Author(s):  
Li-ning Zhang ◽  
Wen-bo Wan ◽  
Yue-xiang Wang ◽  
Zi-yu Jiao ◽  
Li-hai Zhang ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Shear Wave ◽  
Tendon Rupture ◽  
Surgical Repair ◽  
Shear Wave Elastography ◽  
Elastic Stiffness

scholarly journals A Cross-Machine Comparison of Shear-Wave Speed Measurements Using 2D Shear-Wave Elastography in the Normal Female Breast

2021 ◽  
Vol 11 (20) ◽  
pp. 9391
Author(s):  
Emma Harris ◽  
Ruchi Sinnatamby ◽  
Elizabeth O’Flynn ◽  
Anna M. Kirby ◽  
Jeffrey C. Bamber
Keyword(s):  
Adipose Tissue ◽  
Shear Wave ◽  
Subcutaneous Adipose Tissue ◽  
Wave Speed ◽  
Shear Wave Elastography ◽  
Shear Wave Speed ◽  
Skin Region ◽  
Subcutaneous Adipose

Quantitative measures of radiation-induced breast stiffness are required to support clinical studies of novel breast radiotherapy regimens and exploration of personalised therapy, however, variation between shear-wave elastography (SWE) machines may limit the usefulness of shear-wave speed (cs) for this purpose. Mean cs measured in four healthy volunteers’ breasts and a phantom using 2D-SWE machines Acuson S2000 (Siemens Medical Solutions) and Aixplorer (Supersonic Imagine) were compared. Shear-wave speed was measured in the skin region, subcutaneous adipose tissue and parenchyma. cs estimates were on average 2.3% greater when using the Aixplorer compared to S2000 in vitro. In vivo, cs estimates were on average 43.7%, 36.3% and 49.9% significantly greater (p << 0.01) when using the Aixplorer compared to S2000, for skin region, subcutaneous adipose tissue and parenchyma, respectively. In conclusion, despite relatively small differences between machines observed in vitro, large differences in absolute measures of shear wave speed measured were observed in vivo, which may prevent pooling of cross-machine data in clinical studies of the breast.

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