scholarly journals Shear wave elastography of lumbar annulus fibrosus in adolescent idiopathic scoliosis before and after surgical intervention

2019 ◽  
Vol 30 (4) ◽  
pp. 1980-1985
Author(s):  
Claudio Vergari ◽  
Lucas Chanteux ◽  
Raphael Pietton ◽  
Tristan Langlais ◽  
Raphael Vialle ◽  
...  
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Shear Wave ◽  
Annulus Fibrosus ◽  
Surgical Intervention ◽  
Shear Wave Elastography ◽  
Before And After

scholarly journals Decreased Size of Mammary Tumors Caused by Preoperative Treatment with Aglepristone in Female Domestic Dogs (Canis familiaris) Do Not Influence the Density of the Benign Neoplastic Tissue Measured Using Shear Wave Elastography Technique

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 527 ◽  
Author(s):  
Barbara Pieczewska ◽  
Kamila Glińska-Suchocka ◽  
Wojciech Niżański ◽  
Michał Dzięcioł
Keyword(s):  
Shear Wave ◽  
Tumor Size ◽  
Histopathological Examination ◽  
Shear Wave Elastography ◽  
Mammary Tumors ◽  
Needle Aspiration ◽  
Surgical Removal ◽  
Preoperative Treatment ◽  
Neoplastic Tissue ◽  
Before And After

Shear wave elastography (SWE) can be useful to discriminate between malignant and benign mammary tumors. In dogs with elevated progesterone levels compared to the baseline and fast-growing tumors, treatment with the use of aglepristone allows for tumor size reduction, which facilitates surgery. This study aimed to evaluate the influence of the preoperative treatment of benign mammary tumors (BMTs), performed with the use of aglepristone, on the density of the tumor tissue measured by SWE. Twelve female dogs with diagnosed BMTs and increased levels of progesterone were treated with aglepristone (Alizine, Virbac, France) at 10 mg/kg s.c. (Subcutaneous injection). twice, with a 24 h interval. The density of the tumor was evaluated by SWE before and after the treatment. The type of tumor was evaluated by fine needle aspiration cytology before treatment, and a histopathological examination was made after surgical removal, performed after the aglepristone treatment. In all the cases, a significant reduction in the mammary tumor’s size was observed following treatment, with no influence on the density of the tumor’s tissue measured by SWE. Similar studies on malignant mammary tumors are warranted to verify if in these cases, density will also be a constant parameter that is not dependent on the tumor size.

scholarly journals Shear wave elastography in hepatitis C patients before and after antiviral therapy

2017 ◽  
Vol 9 (1) ◽  
pp. 64 ◽  
Author(s):  
Toshikuni Suda ◽  
Osamu Okawa ◽  
Rion Masaoka ◽  
Yoshinori Gyotoku ◽  
Naohiko Tokutomi ◽  
...  
Keyword(s):  
Hepatitis C ◽  
Antiviral Therapy ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Before And After

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 Lumbar annulus fibrosus biomechanical characterization in healthy children by ultrasound shear wave elastography

2015 ◽  
Vol 26 (4) ◽  
pp. 1213-1217 ◽  
Author(s):  
Claudio Vergari ◽  
Guillaume Dubois ◽  
Raphael Vialle ◽  
Jean-Luc Gennisson ◽  
Mickael Tanter ◽  
...  
Keyword(s):  
Shear Wave ◽  
Annulus Fibrosus ◽  
Shear Wave Elastography ◽  
Healthy Children

scholarly journals Intraoperative Computed Tomography versus Perdriolle and Scoliometer Evaluation of Spine Rotation in Adolescent Idiopathic Scoliosis

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Rafal Pankowski ◽  
Szymon Wałejko ◽  
Marek Rocławski ◽  
Marcin Ceynowa ◽  
Tomasz Mazurek
Keyword(s):  
Computed Tomography ◽  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Scoliosis Surgery ◽  
Significant Discrepancy ◽  
Indirect Methods ◽  
Rib Hump ◽  
Intraoperative Computed Tomography ◽  
Scoliosis Correction ◽  
Before And After

Numerous indirect methods for apical vertebral rotation (AVR) measurement have been reported and none of them seems to be as accurate as computed tomography evaluation. The aim of this study was to compare spinal rotation changes during innovative technique of intraoperative computed tomography (ICT) evaluation with indirect methods such as Perdriolle and clinical evaluation with scoliometer. We examined 42 adolescent idiopathic scoliosis (AIS) patients treated with posterior scoliosis surgery (PSS). The mean age at the time of surgery was 16 years. ICT evaluation was performed before and after scoliosis correction in prone position. Clinical rib hump measure with scoliometer and radiographic Perdriolle were performed before and after surgery. There was 71,5% of average rib hump correction with scoliometer but only 31% of correction with ICT (P=0,026) and there was no significant correlation between them (R=0,297,p=0,26). Mean postcorrectional Perdriolle AVR had a decrease of 16,5°. The average ICT AVR had a decrease of only 1,2° (P=0,003). There was no significant statistic correlation between ICT and Perdriolle AVR evaluation (R=0,297,p=0,2). There is a significant discrepancy in AVR and rib hump assessment between scoliometer and Perdriolle methods and ICT evaluation, which seems to be the most accurate tool for spinal derotation measurement.

Spondylolisthesis in Operative Adolescent Idiopathic Scoliosis: Prevalence and Results of Surgical Intervention

2013 ◽  
Vol 1 (4) ◽  
pp. 280-286 ◽  
Author(s):  
Stuart Hershman ◽  
Jason Hochfelder ◽  
Laura Dean ◽  
Burt Yaszay ◽  
Baron Lonner
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Surgical Intervention

scholarly journals Development and validation of the scoliosis misconception scale (SMS) for assessing level of misconception of patients with adolescent idiopathic scoliosis

2021 ◽  
Author(s):  
Amy Ka Po Cheung ◽  
Charlie Chiu Yi Lau ◽  
Meanne Ching Man Chan ◽  
Kenny Yat Hong Kwan
Keyword(s):  
Psychological Distress ◽  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Medical Condition ◽  
Clinical Model ◽  
Acceptable Range ◽  
Before And After ◽  
Psychological Distress Scale ◽  
Development And Validation ◽  
Distress Scale

Abstract Background Little is known about patients’ understanding of adolescent idiopathic scoliosis (AIS). This paper aims to develop and validate the Scoliosis Misconception Scale (SMS) and to explore patients’ level of misconception about AIS. Methods A total of 195 patients who were newly referred with newly diagnosed AIS were recruited to assess their levels of misconception and psychological distress before and after their first consultation with a specialist. The 17-item SMS was administered to assess patients’ level of misconception about AIS and the Kessler Psychological Distress Scale (K10) was used to measure their level of distress. Results According to the Item Response Theory, all items were within the acceptable range from -3.69 to 2.39 for difficulty parameters, which determined the difficulty of the scale, while most of the items were within the acceptable range from 0.11 to 1.54 for the discrimination parameters, which determined the rate at which the probability of endorsing a correct item changes given ability levels. Internal consistency by marginal reliability was 0.66. One-sample t test revealed that participants on average scored 6.79 (SD = 2.12) before the first clinic session and 6.45 (SD = 2.51) after the first clinic session, both significantly higher than 0 [t(75) = 27.86, p < .001; t(75) = 22.43, p < .001]. Conclusions Despite a longstanding clinical model that functions well to treat AIS, most patients still have significant misconceptions about the condition. This highlights the necessity to assess patients’ knowledge level of a medical condition and potential generalisability of misconception–distress link to the forefront across other illnesses.

scholarly journals Evaluation of Functional Recovery Following Achilles Tendon Ruptures by Shear Wave Elastography: A Before-and-After Study

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
Donglin Bian ◽  
Xuemei Wang ◽  
Kun Huang ◽  
Zhen Zhang
Keyword(s):  
Achilles Tendon ◽  
Shear Wave ◽  
Functional Recovery ◽  
Shear Wave Elastography ◽  
Postoperative Recovery ◽  
Postoperative Function ◽  
Time Points ◽  
Before And After ◽  
Tendon Ruptures ◽  
The Mean

Background: Sonoelastography is extensively used for clinical diagnosis. Different types of elastography can be used to assess the elastic properties (stiffness) of tissues. For quantitative analyses, shear wave elastography (SWE) has been applied as a non-invasive method in the past decade. Today, SWE is widely used for diagnosing diseases. However, a limited number of studies have investigated musculoskeletal injuries and neoplastic diseases. Objectives: This study aimed to evaluate the postoperative functional recovery of Achilles tendon ruptures by SWE to determine the Achilles tendon function and provide reliable evidence for clinicians. Methods: SWE was used to measure elasticity in 67 patients with Achilles tendon ruptures. In the postoperative stage, 17 patients were lost to follow-up. The remaining 50 patients with Achilles tendon ruptures were examined. Each patient was followed-up for one, three, and six months postoperatively. The 0° flexion of the ankle joint was considered as the standard position. The mean elasticity (Emean) of the Achilles tendon was measured and recorded at different time points before and after surgery. Besides, the thickness and width of the Achilles tendon were measured at the corresponding time points. Results: The mean elasticity (Emean) of normal and ruptured Achilles tendons was 447.4 ± 59.57 and 63.84 ± 45.18 kPa, respectively in 50 patients with ruptured Achilles tendons before surgery. On the other hand, the Emean values of ruptured Achilles tendons in one-, three-, and six-month follow-ups were 110.3 ± 35.60, 183.4 ± 46.08, and 279.1 ± 48.18 kPa in 50 patients, respectively. Regarding the Emean, the difference between the five time points was significant (F = 418.5, P < 0.01). With prolongation of postoperative recovery, the Emean of the Achilles tendon gradually increased; the Emean value significantly increased at six months after surgery. Conclusions: The quantitative analysis of the postoperative function of Achilles tendon, based on the Emean value obtained by SWE, can be helpful in guiding clinicians to objectively examine the prognosis of patients.

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