scholarly journals On the precision of time-of-flight shear wave speed estimation in homogeneous soft solids: initial results using a matrix array transducer

2013 ◽  
Vol 60 (4) ◽  
pp. 758-770 ◽  
Author(s):  
Michael Wang ◽  
Brett Byram ◽  
Mark Palmeri ◽  
Ned Rouze ◽  
Kathryn Nightingale
Keyword(s):  
Shear Wave ◽  
Wave Speed ◽  
Time Of Flight ◽  
Speed Estimation ◽  
Shear Wave Speed ◽  
Soft Solids ◽  
Array Transducer ◽  
Initial Results ◽  
Matrix Array

Spatial variability of shear wave speed estimation in the non-pregnant cervix

2013 ◽  
Author(s):  
Lindsey C. Carlson ◽  
Helen Feltovich ◽  
Mark M. Palmeri ◽  
Alejandro Munoz Del Rio ◽  
Micheal H. Wang ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Shear Wave ◽  
Wave Speed ◽  
Speed Estimation ◽  
Shear Wave Speed

A comparative study of shear wave speed estimation techniques in optical coherence elastography applications

2016 ◽  
Author(s):  
Fernando Zvietcovich ◽  
Jianing Yao ◽  
Ying-Ju Chu ◽  
Panomsak Meemon ◽  
Jannick P. Rolland ◽  
...  
Keyword(s):  
Comparative Study ◽  
Shear Wave ◽  
Wave Speed ◽  
Speed Estimation ◽  
Optical Coherence ◽  
Estimation Techniques ◽  
Shear Wave Speed

scholarly journals Fetal adrenal gland biometry and cervical elastography as predictors of preterm birth: A comparative study

Ultrasound ◽  
2018 ◽  
Vol 26 (1) ◽  
pp. 54-62 ◽  
Author(s):  
Shubhra Agarwal ◽  
Arjit Agarwal ◽  
Pawan Joon ◽  
Shalini Saraswat ◽  
Shruti Chandak
Keyword(s):  
Preterm Birth ◽  
Adrenal Gland ◽  
Shear Wave ◽  
Sensitivity And Specificity ◽  
Wave Speed ◽  
Clinical Signs ◽  
Developed Countries ◽  
Speed Estimation ◽  
Major Health Problem ◽  
Shear Wave Speed

Background Preterm birth is a major health problem in developing and developed countries leading to rising health care costs and long-term neurodevelopmental disability. The study aims to evaluate the role of new quantitative markers, like the elastography of cervix (shear wave speed estimation), fetal adrenal zone enlargement, and corrected fetal adrenal gland volume; in preterm birth prediction and analyze their relative importance. Thus, these markers may be beneficial in early preterm birth detection and prevent the related morbidities. Methods Thirty pregnant females (from 28 to 37 weeks of gestational age), showing clinical signs and delivery outcome of preterm birth were included in the study with an equal number of not-in-labor antenatal females at ≥37 weeks as controls. These patients were categorized as preterm and term groups. Both the groups were subjected to trans-abdominal ultrasonography where cervical length, cervical shear wave speed (dynamic elastography) and fetal adrenal gland parameters were measured. Results Shear wave speed estimation of the antenatal cervix showed the highest sensitivity and specificity (96.7% and 87% respectively) in the prediction of preterm birth and also showed a strong correlation with fetal adrenal gland enlargement. Fetal adrenal zone enlargement was also shown to be a reliable marker of preterm birth, however, with reduced sensitivity and specificity than shear wave speed. Conclusion The elastographic advancement and fetal adrenal biometry derived quantitative markers can be used as an objective and standard criterion for accurate prediction of preterm birth.

Detecting cervical softness with shear wave speed estimation

2013 ◽  
Author(s):  
Lindsey C. Carlson ◽  
Helen Feltovich ◽  
Mark M. Palmeri ◽  
Alejandro Munoz Del Rio ◽  
Micheal H. Wang ◽  
...  
Keyword(s):  
Shear Wave ◽  
Wave Speed ◽  
Speed Estimation ◽  
Shear Wave Speed
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