scholarly journals Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

2021 ◽  
Author(s):  
Mehmet Sedat Durmaz ◽  
Fatih Ates ◽  
Serdar Arslan ◽  
Turgay Kara ◽  
Funda Gökgöz Durmaz ◽  
...  
Keyword(s):  
Inguinal Hernia ◽  
Healthy Volunteers ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Testicular Volume ◽  
Two Dimensional ◽  
Healthy Group ◽  
Significant Difference ◽  
Operation Techniques ◽  
The Mean

Aim: We compared the two-dimensional shear-wave elastography (2D-SWE) values between the testes with same side operated inguinal hernia (IH) and the contralateral testes, as well as the testes of healthy volunteers without IH. Material and methods: A total of 189 participants (117 unilateral [117 testes] and 8 bilateral operated IH patients [16 testes] and 64 healthy volunteers [128 testes]), providing a total of 378 testicles, were investigated prospectively. All patients underwent B-mode ultrasonography (US) and 2D-SWE examinations. Operation type, the period between diagnosis and operation, the period since the operation, testes volumes, and 2D-SWE values were compared. Results: The B-mode US finding of the testes were normal in all participants. The mean testes’ volume of same side operated IH was significantly lower comparing to contralat-eral testes and the healthy group (p<0.001). The 2D-SWE values of the testes with same side operated IH were significantly higher comparing to the contralateral testes and the healthy group (p<0.001). There was a statistically significant correlation between 2D-SWE values and IH severity, as well as the duration of the hernia (p=0.001). There was no significant correlation between the IH severity and testes volume (p=0.285). No significant difference was found between the direct and indirect IH in terms of testicular volume and SWE values and between the duration of the hernia, the time after sugery, testicular volume and SWE values according to operation techniques(p>0.005). Conclusions: The 2D-SWE can be used as an effective imag-ing method to evaluate testicular stiffness with objective numerical values, to estimate the severity of histologic damage in patients with operated IH.

scholarly journals An exploratory study of two-dimensional shear-wave elastography in the diagnosis of acute compartment syndrome

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jun Zhang ◽  
Wanfu Zhang ◽  
Huihui Zhou ◽  
Lin Sang ◽  
Lina Liu ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Compartment Syndrome ◽  
Shear Wave ◽  
Age Groups ◽  
Shear Wave Elastography ◽  
Diagnosis And Treatment ◽  
Two Dimensional ◽  
Muscle Elasticity ◽  
Gender And Age ◽  
Significant Difference

Abstract Background Two-dimensional shear-wave elastography (2D-SWE) is an ultrasound elastography technique that uses shear waves to quantitatively measure tissue stiffness and it has recently been developed as a safe, real-time, and noninvasive imaging technique. The purpose of this study was to investigate the value of 2D-SWE in the diagnosis and treatment of acute compartment syndrome (ACS). Methods 2D-SWE was used to measure the elasticity values of the main muscles in the superficial compartments of the calf in 212 healthy volunteers, and the difference in the muscle elasticity values between different gender and age groups were analyzed. Nine patients with clinical suspicion of ACS were included in this study and 2D-SWE was used to measure the elasticity values of the muscles on the affected and unaffected sides, and a comparative analysis was performed. Results The mean elasticity values of the tibialis anterior (TA), peroneus longus (PL), and gastrocnemius medialis (GA) muscles in the relaxed state of the 212 healthy volunteers were 25.4 ± 3.2 kPa, 15.7 ± 1.5 kPa, and 12.1 ± 2.1 kPa, respectively. No statistically significant differences was observed in the elasticity values of the same muscle under the state of relaxation in different gender and age groups (p > 0.05). A statistically significant difference in the elasticity values of the muscle between the affected and unaffected sides in the fasciotomy group (p < 0.05, n = 5) was observed. In contrast, no difference in the elasticity values of the muscle between the affected and unaffected sides in the conservative group (p > 0.05, n = 4) was observed. There was a statistically significant difference in the elasticity values of the muscle on the affected side in the two treatment groups (p < 0.05). Conclusions When the ACS occurs, the muscle elasticity of the affected limb increases significantly. 2D-SWE is expected to be a new noninvasive technique for the assessment of ACS and may provide a potential basis for clinical diagnosis and treatment.

scholarly journals Potential of Using Shear Wave Elastography in the Clinical Evaluation and Monitoring of Changes in Masseter Muscle Stiffness

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Cyprian Olchowy ◽  
Mieszko Więckiewicz ◽  
Luca Maria Sconfienza ◽  
Mateusz Łasecki ◽  
Piotr Seweryn ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Shear Wave ◽  
Masseter Muscle ◽  
Severe Pain ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Sensitive Tool ◽  
Massage Treatment ◽  
The Mean ◽  
Evaluation And Monitoring

The study aimed to evaluate masseter muscle stiffness in adult healthy volunteers referred to a massage treatment and also to investigate whether shear-wave elastography can be used to monitor the effect of massage on the masseter muscle. The study included 21 healthy volunteers, who were subjected to a 30-minute massage of the masseter muscle. Muscle stiffness was measured by shear-wave elastography before and directly after the massage. Pain during the massage was assessed using the visual analogue scale (VAS). The data of 20 patients (one excluded due to severe pain) with a median age of 34.5 years were analysed. The stiffness values were 11.46 ± 1.55 kPa before and 8.97 ± 0.96 kPa after the massage ( p < 0.0001 ). The mean drop was 2.49 ± 1.09 kPa. The greatest decrease was observed in people with higher elasticity values before the massage (r = 0.79; p < 0.0001 ). The median intensity of pain was 7.2 (range: 6–9.5). We concluded that shear-wave elastography is a sensitive tool to monitor changes in the stiffness of the masseter muscle.

scholarly journals Shear wave elastography: Can it be a new radiologic approach for the diagnosis of erectile dysfunction?

Ultrasound ◽  
2017 ◽  
Vol 25 (3) ◽  
pp. 150-155 ◽  
Author(s):  
Rustu Turkay ◽  
Ercan Inci ◽  
Mustafa Gurkan Yenice ◽  
Volkan Tugcu
Keyword(s):  
Erectile Dysfunction ◽  
Positive Predictive Value ◽  
Shear Wave ◽  
Predictive Value ◽  
Corpus Cavernosum ◽  
Shear Wave Elastography ◽  
Significant Difference ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Introduction Erectile dysfunction (ED) is a common health problem among males, and radiology has limited use in its diagnosis and treatment. Shear wave elastography (SWE) is a new sonographic technique. In this study, we examined the significance of SWE in the diagnosis of ED. Methods The study included a total number of 70 participants. The mean age of the participants was 54.14 ± 8.03 years (range: 39 and 71 years old). We composed two groups. Group 1 had 35 patients who presented to the urology clinic in our hospital complaining of ED, and had a score of 17 or lower from the International Index of Erectile Function (IIEF) questionnaire. Group 2 consisted of 35 healthy volunteers who did not have ED. SWE measurements were performed from corpus cavernosum penis in both groups, and the results were noted. Differences between the groups were evaluated statistically. Results The difference between the mean SWE measurements of two groups (Group 1: 20.94 ± 6.23 kPa and group 2: 24.63 ± 7.58 kPa) was found to be statistically significant ( p = 0.027; p < 0.05). For a cut-off value of 17.1 kPa, the SWE method has specificity, sensitivity, positive predictive value, and negative predictive value regarding diagnosis of ED as 94.29%, 34.29%, 85.71%, and 58.93%, respectively. The mean age of the groups did not show a statistically significant difference ( p = 0.287; p > 0.05). Conclusions Due to its high specificity and positive predictive value, SWE can offer useful data in the radiologic evaluation of ED cases.

scholarly journals Assessment of the optic nerve, optic disc, and perineural area using shear-wave elastography in patients with multiple sclerosis

2021 ◽  
Author(s):  
Suna Sahin Ediz ◽  
Basak Atalay ◽  
Ilknur Aydın Canturk ◽  
Adnan Kabaalioglu
Keyword(s):  
Multiple Sclerosis ◽  
Optic Nerve ◽  
Optic Neuritis ◽  
Optic Disc ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Control Group ◽  
Optic Nerves ◽  
Significant Difference ◽  
The Mean

Purpose: To observe and describe the stiffness changes of the optic nerve in the patients with multiple sclerosis (MS) with or without optic neuritis and healthy adults via shear wave elastography (SWE). Methods: Seventy optic nerves from thirty-five patients with MS and sixty optic nerves from thirty healthy subjects were included prospectively in the study. The optic nerve (ON), optic disc (OD), and perineural area were evaluated with SWE and optic nerve sheat diameter (ONSD) was measured by ultrasound. Results The mean age of patients was 39.68 ± 9.99 years. There was no statistically significant difference between the groups in terms of ONSD, SWE ON, SWE OD, and SWE perineural area levels (p> 0.05). In the MS group; No statistically significant difference was found between patients with and without optic neuritis for the mean age, gender distribution, duration of MS, types of MS, ONSD, SWE ON, SWE OD, SWE perineural area, and Expanded Disability Status Scale (EDSS) scores (p> 0.05). No statistically significant difference in terms of ONSD, SWE ON, SWE OD, and SWE perineural area between the MS patients with or without optic neuritis and the control group (p> 0.05). Conclusion: Shear wave elastography measurements of the optic nerve, optic disc, and perineural area do not contribute to the evaluation of optic neuritis in a patient with MS.

scholarly journals Effectiveness of Shear Wave Elastography in the diagnosis of acute pancreatitis on admission

2018 ◽  
Vol 20 (3) ◽  
pp. 278 ◽  
Author(s):  
Mehmet Sedat Durmaz ◽  
Serdar Arslan ◽  
Bora Özbakır ◽  
Gökhan Güngör ◽  
İsmet Tolu ◽  
...  
Keyword(s):  
Acute Pancreatitis ◽  
Shear Wave ◽  
Sensitivity And Specificity ◽  
Shear Wave Elastography ◽  
Imaging Method ◽  
Pancreatic Parenchyma ◽  
Free Region ◽  
Significant Difference ◽  
Asymptomatic Volunteers ◽  
The Mean

Aim: We aimed to investigate the effectiveness of shear wave elastography (SWE) in the diagnosis of acute pancreatitis (AP).Material and methods: The pancreatic parenchyma of 50 patients whose clinical and laboratory findings were indicative of AP and of 70 healthy, asymptomatic volunteer participants with normal laboratory values was examined using SWE.Computed tomography was performed in all patients with AP on admission. Elastographic measurements were performed by manually drawing the contours of the pancreatic parenchyma using the free region of interest. The quantitative SWE values (meters/second [m/s], kilopascal [kPa]) of the patients and asymptomatic volunteers group were compared.Results: The mean SWE value of the pancreatic parenchyma was 2.60 ± 1.63 m/s in the asymptomatic volunteers and 3.48 ± 0.52 m/s in patients with AP, with a statistically significant difference (p<0.001, t=-3.685). The mean SWE value of the pancreatic parenchyma was 23.77±6.72 kPa in the asymptomatic volunteers and 45.71 ± 10.72 kPa in patients with AP, indicating a significant difference (p<0.001, t=-3.685). AP can be diagnosed with a sensitivity and specificity of 98.0% when 29.45 kPa was designated as cut-off value and with a 96.0% sensitivity and 98.3% specificity when 2.77 m/s was designated as the cut-off value. The superiority of SWE was found over B-mode US and CECT in the diagnosis of AP on admission. Conclusion: SWE can be used as an effective imaging method with high sensitivity and specificity for the diagnosis of AP. It may be used as an important imaging method to assist in the diagnosis of AP especially when B-mode US and CECT findings are normal.

Placental elastography in second trimester preeclampsia prediction: A prospective study

Ultrasound ◽  
2021 ◽  
pp. 1742271X2110405
Author(s):  
Rajkumar Meena ◽  
Amita Malik ◽  
Swarna Jain ◽  
Achla Batra
Keyword(s):  
Shear Modulus ◽  
Shear Wave ◽  
Predictive Value ◽  
Shear Wave Elastography ◽  
Mean Value ◽  
Diagnostic Potential ◽  
Significant Difference ◽  
Group A ◽  
The Mean ◽  
Group B

Objective The aim of the study was to evaluate the diagnostic potential of placental shear wave elastography in predicting preeclampsia at 16 to 20 weeks of gestation. Materials and methods A total of 230 pregnant women between 16 and 20 weeks of gestation were observed for the study. These women underwent shear wave elastography ElastPQ (Philips Healthcare, Bothell, Washington, USA) of the placenta. The mean value of placental shear modulus was obtained for each participant. These participants were followed up for the development of preeclampsia and were divided into two groups; group A included those who developed preeclampsia and group B included those who remained normotensive until delivery. The elasticity values of the two groups were compared, and the ROC curve was drawn to obtain the best cut-off value that would predict the onset of preeclampsia. Results Placental shear modulus varied from 1.03 kPa to 7.4 kPa at 16 to 20 weeks of gestation with an average of 2.74 ± 0.87 kPa. There was a statistically significant difference in the mean value of elasticity between two groups, being 4.61 kPa in group A and 2.51 kPa in group B. Maximum diagnostic accuracy was obtained at 2.9667 kPa with area under the curve 0.970, sensitivity 92%, specificity 91.71%, positive predictive value 57.5% and negative predictive value 98.9%. Conclusion Stiffness of placenta, quantitatively measured by SWE at 16 to 20 weeks of gestation, is higher in the women who develop preeclampsia and hence may be used for predicting preeclampsia.

scholarly journals Ultrasound shear wave elastography imaging of common carotid arteries in patients with Spontaneous Coronary Artery Dissection (SCAD)

2022 ◽  
Author(s):  
Fahad F. Al-mutairi ◽  
Abtehal Al-hussaini ◽  
Anne-Marie Marsh ◽  
Nilesh Samani ◽  
Gerry McCann ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Shear Wave ◽  
Carotid Arteries ◽  
Shear Wave Elastography ◽  
Artery Dissection ◽  
Spontaneous Coronary Artery Dissection ◽  
Coronary Artery Dissection ◽  
Significant Difference ◽  
The Mean ◽  
Common Carotid Arteries

Abstract Background Shear wave elastography (SWE) is emerging as a valuable clinical tool for a variety of conditions. The aim of this pilot study was to assess the potential of SWE imaging of the common carotid arteries (CCA) in patients with spontaneous coronary artery dissection (SCAD), a rare but potentially life-threatening condition, hypothesized to be linked to changes in vessel wall elasticity. Methods Ultrasound shear wave elastography (SWE) estimates of artery wall elasticity were obtained from the left and right CCAs of 89 confirmed SCAD patients and 38 non-dissection controls. SWE images obtained over multiple cardiac cycles were analysed by a blinded observer to estimate elasticity in the form of a Young’s Modulus (YM) value, across regions of interest (ROI) located within the anterior and posterior CCA walls. Results YM estimates ranged from 17 to 133 kPa in SCAD patients compared to 34 to 87 kPa in non-dissection controls. The mean YM of 55 [standard deviation (SD): 21] kPa in SCAD patients was not significantly different to the mean of 57 [SD: 12] kPa in controls, p = 0.32. The difference between groups was 2 kPa [95% Confidence Interval − 11, 4]. Conclusions SWE imaging of CCAs in SCAD patients is feasible although the clinical benefit is limited by relatively high variability of YM values which may have contributed to our finding of no significant difference between SCAD patients and non-dissection controls.

Liver Elastography in Healthy Children Using Three Different Systems – How Many Measurements Are Necessary?

2020 ◽  
Author(s):  
Anders Batman Mjelle ◽  
Anesa Mulabecirovic ◽  
Roald Flesland Havre ◽  
Edda Jonina Olafsdottir ◽  
Odd Helge Gilja ◽  
...  
Keyword(s):  
Shear Wave ◽  
Transient Elastography ◽  
Intraclass Correlation ◽  
Age Groups ◽  
Liver Stiffness ◽  
Shear Wave Elastography ◽  
Healthy Children ◽  
Significant Difference ◽  
Pediatric Liver Disease ◽  
Liver Elastography

Abstract Purpose Liver elastography is increasingly being applied in screening for and follow-up of pediatric liver disease, and has been shown to correlate well with fibrosis staging through liver biopsy. Because time is of the essence when examining children, we wanted to evaluate if a reliable result can be achieved with fewer acquisitions. Materials and Methods 243 healthy children aged 4–17 years were examined after three hours of fasting. Participants were divided into four age groups: 4–7 years; 8–11 years; 12–14 years and 15–17 years. Both two-dimensional shear wave elastography (2D-SWE; GE Logiq E9) and point shear wave elastography (pSWE; Samsung RS80A with Prestige) were performed in all participants, while transient elastography (TE, Fibroscan) was performed in a subset of 87 children aged 8–17 years. Median liver stiffness measurement (LSM) values of 3, 4, 5, 6, 7, and 8 acquisitions were compared with the median value of 10 acquisitions (reference standard). Comparison was performed for all participants together as well as within every specific age group. We investigated both the intraclass correlation coefficient (ICC) with absolute agreement and all outliers more than 10 %, 20 % or ≥ 0.5 or 1.0 kPa from the median of 10 acquisitions. Results For all three systems there was no significant difference between three and ten acquisitions, with ICCs ≥ 0.97. All systems needed 4 acquisitions to achieve no LSM deviating ≥ 1.0 kPa of a median of ten. To achieve no LSM deviating ≥ 20 % of a median of ten acquisitions, pSWE and TE needed 4 acquisitions, while 2D-SWE required 6 acquisitions. Conclusion Our results contradict recommendations of 10 acquisitions for pSWE and TE and only 3 for 2D-SWE.

Noninvasive Assessment of Liver Diseases using 2D Shear Wave Elastography

2016 ◽  
Vol 25 (4) ◽  
pp. 525-532 ◽  
Author(s):  
Monica Lupșor-Platon ◽  
Radu Badea ◽  
Mirela Gersak ◽  
Anca Maniu ◽  
Ioana Rusu ◽  
...  
Keyword(s):  
Shear Wave ◽  
Predictive Value ◽  
Liver Diseases ◽  
Venous Pressure ◽  
Liver Stiffness ◽  
Shear Wave Elastography ◽  
Acoustic Radiation Force Impulse ◽  
Two Dimensional ◽  
Non Invasive ◽  
Examination Technique

There has been great interest in the development of non-invasive techniques for the diagnosis of liver fibrosis in chronic liver diseases, including ultrasound elastographic methods. Some of these methods have already been adequately studied for the non-invasive assessment of diffuse liver diseases. Others, however, such as two-dimensional Shear Wave Elastography (SWE), of more recent appearance, have yet to be validated and some aspects are for the moment incompletely elucidated. This review discusses some of the aspects related to two-dimensional SWE: the examination technique, the examination performance indicators, intra and interobserver agreement and clinical applications. Recommendations for a high-quality examination technique are formulated. Key words:  –  –  – Two-dimensional Shear Wave Elastography. Abbreviations: 2D- SWE: Two-dimensional Shear Wave Elastography; 3D- SWE: Three-dimensional Shear Wave Elastography; AUROC: area under the receiver operating characteristic curves; ARFI Acoustic Radiation Force Impulse Elastography; EFSUMB: European Federation of Societies for Ultrasound in Medicine and Biology; HVPG: hepatic venous pressure gradient; LS: liver stiffness; LR: likelihood ratio; NPV: negative predictive value; PPV: positive predictive value; ROI: region of interest; RT-E: Real Time-Elastography; Se: sensitivity; Sp: specificity; TE: Transient Elastography; US: ultrasound; VM: valid measurement; E: Young’s modulus

scholarly journals Effect of Resonant Frequency Vibration on Delayed Onset Muscle Soreness and Resulting Stiffness as Measured by Shear-Wave Elastography

2021 ◽  
Vol 18 (15) ◽  
pp. 7853
Author(s):  
Garrett C. Jones ◽  
Jonathan D. Blotter ◽  
Cameron D. Smallwood ◽  
Dennis L. Eggett ◽  
Darryl J. Cochrane ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Shear Wave ◽  
Time Course ◽  
Biceps Brachii ◽  
Shear Wave Elastography ◽  
Upper Body ◽  
Maximum Voluntary Isometric Contraction ◽  
Post Exercise ◽  
Significant Difference ◽  
Pain Ratings

This study utilized resonant frequency vibration to the upper body to determine changes in pain, stiffness and isometric strength of the biceps brachii after eccentric damage. Thirty-one participants without recent resistance training were randomized into three groups: a Control (C) group and two eccentric exercise groups (No vibration (NV) and Vibration (V)). After muscle damage, participants in the V group received upper body vibration (UBV) therapy for 5 min on days 1–4. All participants completed a visual analog scale (VAS), maximum voluntary isometric contraction (MVIC), and shear wave elastography (SWE) of the bicep at baseline (pre-exercise), 24 h, 48 h, and 1-week post exercise. There was a significant difference between V and NV at 24 h for VAS (p = 0.0051), at 24 h and 1-week for MVIC (p = 0.0017 and p = 0.0016, respectively). There was a significant decrease in SWE for the V group from 24–48 h (p = 0.0003), while there was no significant change in the NV group (p = 0.9341). The use of UBV resonant vibration decreased MVIC decrement and reduced VAS pain ratings at 24 h post eccentric damage. SWE was strongly negatively correlated with MVIC and may function as a predictor of intrinsic muscle state in the time course of recovery of the biceps brachii.

Sign in / Sign up

Export Citation Format

Share Document