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Showing 1-20 of 28 trials
NCT06933511
This observational study examines changes in the median nerve in patients diagnosed with diabetic polyneuropathy (DPN) and carpal tunnel syndrome (CTS) using shear wave elastography, microvascular imaging, and cross-sectional area measurements. It also compares the individual and combined effects of type 2 diabetes mellitus, DPN, and CTS on symptoms and hand function.
NCT07492862
Porto-sinusoidal vascular disease (PSVD) is a rare clinical entity characterized by significant portal hypertension in the absence of cirrhosis on liver histology, which may or may not show specific alterations of the portal vein, sinusoids, or hepatic lobular architecture. Currently, diagnosis of this condition necessarily requires a liver biopsy and, despite some differences detected on imaging studies-and particularly on liver and spleen elastography-PSVD remains indistinguishable from cirrhosis using non-invasive tests. Contrast-enhanced ultrasound (CEUS) is an easy-to-perform, repeatable, and cost-effective examination that enables real-time assessment of parenchymal or focal liver lesion perfusion. Moreover, the application of dynamic contrast-enhanced ultrasound (DCE-US-i.e., contrast-enhanced ultrasound followed by quantitative perfusion analysis using dedicated software, such as the VueBox Software that will be used in this study) allows integration of CEUS qualitative assessment with quantitative evaluation of tissue perfusion through analysis of time-intensity curves generated during contrast transit. From this analysis, several perfusion-related parameters can be derived (for example, peak enhancement, time to peak, or area under the curve), which have already proven useful in improving differential diagnosis of focal liver lesions and in predicting treatment response and systemic therapy outcomes. To date, the use of DCE-US for the diagnosis of PSVD has not yet been described; however, based on the underlying histological alterations associated with this disease, it is reasonable to hypothesize that parameters obtained with this technique in the liver parenchyma of patients with PSVD may differ from those measured in patients with liver cirrhosis. The aim of the present project is to apply DCE-US in patients with PSVD and in patients with cirrhosis to evaluate potential significant differences in perfusion parameters, and to assess the feasibility of a non-invasive differential diagnosis between the two conditions using this technique in combination with elastography and bidimensional ultrasound data to develop a multiparametric diagnostic score.
NCT06863077
Medial meniscus tears requiring surgical interventions are mostly being done by arthroscopic procedures. During the arthroscopy, accessing the medial joint space is challenging. Because of this situation, pie-crusting of the medial collateral ligament (MCL) of the knee is described. This procedure is to release the MCL 1 cm distal to its origin with a needle-tip. This release provides enough space for both identifying the tear and also provides enough space to introduce necessary equipment in the joint space for repair. But there are some doubts about MCL release. Some authors suspected ongoing valgus instability after this procedure. Our aim is to identify the tension of MCL with USG shear wave elastography before the procedure, and 3 weeks, 6 weeks and 3 months postoperatively.
NCT07127302
Evaluation and Clinical Correlation of Tendons Using Power Doppler, SWE, Microvascular Flow (MV-Flow) Imaging and B-Mode Ultrasonography in Patients with Lateral Epicondylitis.
NCT07400367
Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) is the new clinical term introduced in 2023 to redefine what was formerly known as Non-Alcoholic Fatty Liver Disease (NAFLD). It is defined as fatty liver confirmed by imaging or biopsy, accompanied by at least one cardiometabolic risk factor (e.g., hyperglycemia, dyslipidemia, hypertension, or obesity). Its pathological progression ranges from simple steatosis to steatohepatitis, primarily driven by excessive energy intake, hepatic lipid accumulation, and insulin resistance. MASLD is currently the most prevalent chronic liver disease globally, with a prevalence rate of approximately 30-40%. However, there is no satisfactory pharmacological treatment, leaving lifestyle modification as the primary therapeutic approach. Many patients struggle to effectively adjust their habits, leading to persistent hepatic inflammation and damage, which may eventually progress to end-stage diseases such as cirrhosis and hepatocellular carcinoma. In many developed countries, MASLD has become the leading indication for liver transplantation, imposing a heavy burden on healthcare systems. Gut dysbiosis is closely linked to MASLD. An imbalance in the gut microbiota disrupts the gut-liver axis, leading to impaired intestinal mucosal barrier function. This allows bacterial components to enter the circulation, further triggering hepatic inflammation and abnormal lipid metabolism. Consequently, modulating the gut microbiota is considered a potential therapeutic strategy. Over the past decade, probiotics, prebiotics, and synbiotics have been extensively studied as non-pharmacological treatments for NAFLD. Multiple studies indicate that these products can reduce liver enzymes (AST, ALT), insulin resistance (HOMA-IR), and inflammatory markers (hs-CRP, TNF-α). The most effective combinations typically involve Lactobacillus, Bifidobacterium, and Streptococcus, with a recommended duration of approximately 12 weeks. However, the impact of these products on liver fibrosis, hepatic fat accumulation, and cardiometabolic risk factors remains inconclusive. The probiotic product to be tested consists of Lactobacillus salivarius AP-32, Lactobacillus rhamnosus bv-77, Bifidobacterium animalis CP-9, and Lactobacillus reuteri GL-104. This formulation complies with food safety regulations. In clinical studies, it had been proven as an effective adjuvant method that increased beneficial gut bacteria such as Akkermansia muciniphila and improved the control of blood glucose, lipids, and inflammatory markers. Study Objectives This study aims to investigate the efficacy of this probiotic product as an adjuvant therapy alongside lifestyle modifications in adult patients with MASLD. We will evaluate its impact on: 1. The degree of liver fibrosis and steatosis 2. Cardiometabolic risk factors (BMI, waist circumference, blood lipids, and blood glucose). 3. Inflammatory markers. 4. Gut microbiota composition.
NCT07327112
To elucidate the relationship between changes in the mechanical properties of the tibialis anterior tendon and deformity in patients with hallux valgus, a case-control study is planned to quantitatively measure tendon stiffness using shear-wave elastography (SWE). Two groups will be compared: adults with radiographically confirmed hallux valgus (HVA (Hallux valgus angle) ≥15°) and age- and gender-matched healthy controls. The primary outcome is the elasticity modulus of the tibialis anterior tendon measured by SWE (kPa). Measurements will be performed using a high-frequency linear probe, with the probe positioned parallel to the tendon fibers and the foot in the standard ankle position, with three repetitions performed on each subject; the mean of stable frames will be used in the analysis. Secondary variables will be the relationships between tendon thickness/cross-sectional area, clinical angle parameters (HVA, IMA (intermetatarsal angle)), and functional scores. In the reliability sub-study, intra- and inter-observer ICC (Intraclass Correlation Coefficient), SEM (Standard Error of Measurement), and MDC (Minimal Detectable Change) will be calculated. The sample size was calculated for a two-sample, two-tailed t-test with α=0.05 and 80% power assumptions, targeting a clinically meaningful medium-to-high effect size (Cohen d=0.60); at least 45 patients (45 with hallux valgus + 45 healthy) were planned. Parametric/non-parametric tests appropriate for the distribution and ANCOVA for potential confounders (age, gender, BMI, foot dominance) will be used in the analyses. The study is expected to objectively demonstrate whether tibialis anterior tendon stiffness changes in hallux valgus, thereby clarifying the muscle-tendon contributions to pathomechanics and laying the groundwork for targeted strategies in both conservative and surgical treatment planning.
NCT04404114
Chronic kidney disease is a common global public health issue and its prevalence increased year by year. Early diagnosis and intervention can prevent further complications and comorbidities of long-term dialysis, cardiovascular events and mortality as well as improve the patients' life quality. To differentiate acute from chronic kidney disease was crucial especially in the setting of crowded and high-risk emergency department. To diagnose acute or chronic kidney disease, physicians usually use blood sample test combined with image studies such as conventional sonography, CT and MRI. However, there was lots of limited factors. The patients may have no previous visit records, poor renal function to receive contrast medium, or critical clinical condition to undergo time-wasting exam. Although the conventional renal sonography is accessible and inexpensive, the judgement is subjective and provide little clinical information. Recent researches of shear wave elastography in evaluating renal parenchymal stiffness showed some correlation with nephropathy. In our study, aiming to facilitating clinical implication, the investigators will use swear-wave elastography combined with conventional renal sonography to benefit patients in diagnosis of acute or chronic kidney disease.
NCT06826807
The 2022 National Health Survey in Thailand revealed a substantial rise in obesity and metabolic dysfunction-associated steatotic liver disease (MASLD). The prevalence of MASLD was 19.7%, with higher rates observed in individuals with metabolic syndrome and diabetes. Effective management of MASLD primarily involves lifestyle modifications, including dietary adjustments and increased physical activity. Evidence suggests that patients unaware of their liver fibrosis status are less likely to adhere to these interventions. This study aims to evaluate the impact of hepatic elastography monitoring on lifestyle modification adherence and health outcomes in patients with MASLD over 48 weeks.
NCT05692024
This is research study is assessing the effects of 6-g daily use of freeze-dried instant coffee on liver fat and fibrosis and the gut microbiome and metabolome in patients who have completed routine treatment (including surgery, chemotherapy and radiotherapy) for stage I-III colorectal cancer.
NCT06623877
All participants will clinically evaluated by history taking, full physical examination including body weight and assessment of fluid status, and blood and urine samples for lab analysis (serum creatinine, urea, sodium, potassium, corrected calcium, phosphorous, estimated glomerular filtration rate(GFR) by Cokcroft equation ((140 - age ) x body weight by Kg/creatinine by µmol )complete urine analysis including microscopic examination of urine , 24 hours urinary protein , haemoglobin level . All participants will undergo renal shear wave elastography measurements. Values will be obtained from the upper, middle, and lower zones of each kidney. A total of six shear wave elastography measurements will be collected to get mean elastography values (MEVs) of each participant.
NCT06272708
Objectives: To investigate the role of thromboelastography parameters (R, K, Angle, MA) in monitoring anticoagulation in maintenance hemodialysis (MHD) patients. Subjects: Two hundred stable MHD patients. Methods: An observational study. Primary outcome: Relationship between thromboelastography parameter R Value and coagulation of hemodialysis circuit and dialyzer. Secondary outcome: Relationship between thromboelastography parameters (K Value, Angle and MA) and coagulation of hemodialysis circuit and dialyzer.
NCT05455346
The overall goal of this study is to investigate the effects of a 6-week training program between two hamstring exercises-the Romanian deadlift (RDL) and the Nordic hamstring exercise (NHE)-on hamstring strain injury risk factors and sprint performance.
NCT06157775
The aim of this study is to provide a scientific basis for Shear-wave elastography measurements of hip stabilizing muscles on healthy individuals. To assess the inter- and intra-user validity, 12 healthy volunteers were recruited for ultrasonographic assessment by two experienced physiatrists.
NCT06057792
The application of pulsed negative pressure to the scar tissue stimulates the cellular response, producing elastic changes in the tissue, quantifiable by ultrasound, not only in terms of thickness but also in the elastic capacity of the tissues, measured by quantified elastography.
NCT05656963
Influence factors and preliminary mechanism of high incidence of thrombotic events in patients with idiopathic membranous nephropathy and diabetes kidney disease
NCT04384003
Football is an increasingly popular exercise and common practice among adolescent and elite athletes. However, these athletes tend to have injuries involving the lower extremity and foot. Recent literature has proposed a promising concept of core stability on the arch of the foot and proximal hip control exercise for a knee injury. They have highlighted that foot core training begins with targeting the plantar intrinsic muscles through exercise intervention, which may enhance the capacity and control of the foot core system. Moreover, it is hypothesized that the 'complexity algorithm' of exercise intervention for proximal hip control may provide more sufficient effects on musculoskeletal pain in the lower extremity. However, some conflicting issues such as assessment and training of foot intrinsic muscle in functional positions still largely lack devices and research to elucidate the underlying mechanism of its development and integrated exercise interventions proximally and distally on these athletes. Firstly, the investigators aim to design and develop of novel intrinsic foot muscle assessment and training device for sporting tasks and to examine the feasibility and reliability of muscle stiffness in foot and hip joints before and after exercise intervention using shear wave ultrasound elastography (SWUE) in athletes without and with foot and ankle overuse injuries; second, investigators will investigate whether immediate and persistent alteration after the integrated therapeutic exercise on motor control and muscle stiffness.
NCT05503615
Instrument-assisted soft tissue mobilization is an instrument-assisted soft tissue mobilization technique. It consists of stainless steel instrument designed to adapt to various tissues/shapes/curves of the body. The instruments were developed as an alternative to transverse friction massage. Stainless steel acts a bit like a diaposon when it comes into contact with fibrotic tissue. A resonance or reverberation in the instrument is created upon contact and transmitted through the instrument to the hands of the clinician. The application of heavy pressure (compared to light or medium pressure) using instruments has been proven to promote a greater fibroblastic response. Instrument-assisted soft tissue mobilization is not used without insulation. It is imperative to use movement and strengthening in combination with soft tissue mobilization to promote tissue adaptation and remodeling. Mechanical loading has been shown to affect chondrocyte alignment and fibroblast activity with increased proteoglycan and collagen synthesis. Elastography is an imaging method that allows the qualitative and quantitative evaluation of the biomechanical properties of tissues through USG. This imaging method provides information about the stiffness of the tissues independently of the acoustic impedance provided by B-mode examination and the vascular flow information provided by Doppler examination. Compression elastography technique is based on the formation of strain (strain, displacement) in the compressed tissue. In hard tissues, displacement (strain) is less, while in soft tissues it is more. The displacement rates of the tissues are calculated by comparing the echo data obtained before and after the compression application. In compression elastography systems, the amount of pressure applied is indicated by an indicator on the screen. The aim of this study was to investigate the effect of instrument-assisted soft tissue mobilization technique by compression elastography method on flexibility and thickness in gastrocnemius muscle and Achilles tendon in healthy individuals.
NCT05419414
In this prospective cohort study, the patients who were diagnosed with either uterine fibroid (control group) or adenomyosis (study group), were examined with transvaginal ultrasound and shear wave elastography. Definitive diagnosis was established by pelvic MRI. Shear wave elastography data of both groups were compared. Features of adenomyosis on transvaginal ultrasound were also recorded for study group.
NCT04964648
Only a few studies that have assessed the normal range value for pancreatic stiffness, inflammatory and malignant pancreatic lesions, shear wave velocities of healthy parenchyma, acute and chronic pancreatitis, malignant lesions of the pancreas will be evaluated and compared with other conventional imaging modalities, and evaluate its role in assessment of severity and prediction of clinical course/ outcome in patients with inflammatory pancreatic diseases.
NCT04759521
The aims of this study are to evaluate liver fibrosis with two-dimensional (2D) shear wave elastography (SWE) technique in inactive hepatitis B surface antigen (HBsAg) carriers and patients with active chronic hepatitis B (CHB), with the help of a propagation map, compare this method with histopathological results in patients with CHB and determine the suitability of 2D-SWE for use instead of liver biopsy by evaluating fibrosis before and after treatment.