View clinical trials related to Ultrasonography.
Filter by:To study the predictive value of ultrasonographic (USG) parameters in the form of anteroposterior diameter , calyceal dilatation , calyx-to-parenchyma ratio , renal length , renal width , pelvis-to-cortex ratio (PCR) and parenchymal thickness versus renographic parameters in the form of T1/2 , differential renal function (DRF) and Tissue tracer transit (TTT) for early detection of children at risk of recurrent obstruction post unilateral pyeloplasty.
In this study, the investigators will investigate how patients' radial artery diameters change according to sex, age, height, weight and body mass index by measuring radial artery diameter using ultrasonography. The correlation of Allen test with doppler ultrasonography will also be evaluated.
BACKGROUND Psoriatic arthritis (PsA) is a systemic inflammatory disease with articular and extra-articular features. Establishing the prognosis of a patient with PsA is hence important to define the treatment strategy. Currently, observational and prospective cohort studies have identified prognostic factors correlating with the achievement of therapeutic response. Nevertheless, despite the importance of identifying prognostic factors in a disease with a functional disability comparable to rheumatoid arthritis, the studies are still limited. PRIMARY OBJECTIVE In PsA with clinically active joint disease starting a new course of therapy, to evaluate the additional value of UltraSound(US)-score over clinical examination in detecting patients achieving MDA at 6 months. STUDY DESIGN The study follows a multi-centre observational prospective cohort study design. PATIENTS AND METHODS INCLUSION CRITERIA - Adult > 18 years of age with PsA (PsA according to the ClASsification criteria for Psoriatic Arthritis (CASPAR) - with joint involvement) - At least one joint clinically involved (both swelling and tenderness); - prescription of new course of d NSAIDs (monotherapy), steroid intra-articular injections (monotherapy), conventional Disease-Modifying AntiRheumatic Drugs (DMARDs), biologic DMARDs, including switches or dose augmentations indicated by the treating rheumatologist according to usual clinical practice before US acquisition; - Stable treatment before treatment modification (6 weeks); - Signed informed consent form. CLINICAL ASSESSMENT Patient's clinical assessment will be performed according to the core set of domains for PsA proposed by the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) and Outcome Measures in Rheumatology (OMERACT). ULTRASOUND ASSESSMENT Sonographic evaluations will be performed by expert ultrasonographers in 44 joints, 36 tendons, 12 entheses and 2 bursae according to the score developed for psoriatic arthritis by the study group ultrasound of the Italian Society of Rheumatology (US-score PsA-SIR) EXPECTED RESULTS AND SIGNIFICANCE The aim of this study is to identify clinical and US predictors of achieving MDA in PsA patients with active peripheral arthritis starting a new course of therapy.
Contrast-enhanced ultrasound(CEUS) of carotid artery plaque is a novel method that enabled direct visualization of neovessels in the vulnerable plaque. Plaque enhancement with CEUS showed correlation with the histologic density of neovessels within the carotid plaque and the previous cardiovascular events. Vulnerable plaques with a high risk of thromboembolic complications and rapid progression is associated with acute ischemic stroke. The prognostic value of vulnerable carotid artery plaque depicted with CEUS has not been fully investigated. The purpose of this study is to define prognostic value of plaque enhancement on carotid CEUS in acute stroke patients. Research question is; in acute ischemic stroke patients with ipsilateral carotid plaque as probable etiology of stroke, is the presence of carotid plaque enhancement on CEUS independent predictor of future stroke.
To set up a Cooperative Network by enrolling 5000 patients with Adenomyosis(AM) from multiple centers.Based on the Network platform and Database,the investigators try to explore the diagnostic strategies for AM and carry out epidemiological survey on the semeiology of AM.In addiction，the investigators expect to conduct research on the effect and the follow-up fertility outcomes of different medical or surgical treatment, the etiology of AM and endometriosis,the perspective investigation of the malignant transformation of AM ;the high-risk factors of AM,and finally propel the formation of Expert Consensus and Clinical Guidelines about AM which suitable to chinese conditions.
Achilles tendon is a frequent lower-limb tissue where tendinopathy may arise. Percutaneous Therapeutic Electrolysis (EPTE®) is an electronic device that enables to treat accurately, guided by an ultrasound, the tendon injured area by applying a galvanic current through an acupuncture needle. Thus, the first stage of physiological regenerative process may be obtained. Design: Randomized Controlled Clinical Trial. Objectives: To know the effectiveness of Percutaneous Therapeutic Electrolysis (EPTE®) versus a sham intervention at improving pain and function in patients who undergo Achilles Chronic Tendinopathy and to determine the efficiency of Percutaneous Therapeutic Electrolysis (EPTE®) with monopolar needle versus Percutaneous Therapeutic Electrolysis (EPTE®) with bipolar needle at improving pain and function in patients who undergo Achilles Chronic Tendinopathy. Participants: patients diagnosed with Achilles Chronic Tendinopathy. Setting. Infanta Leonor Hospital, Madrid, Spain. Experimental intervention: Percutaneous Therapeutic Electrolysis (EPTE®) with monopolar needle, 330 microamps, 1 min 20 sec versus bipolar needle. Sham intervention: the guide tube of the needle contacted with the skin and the device remained switched on to simulate its functioning.
The goal of this study is to assess the impact of perioperative point-of-care ultrasound (POCUS) assessment on patient-important outcomes (e.g. hospital length of stay, length of stay in recovery, mortality etc.) and perioperative patient management strategies, in patients undergoing non-elective non-cardiac surgeries.
There is currently a lack of evidence to support the use of perioperative point-of-care ultrasound to assess the outcomes in high risk surgical patients. Thus, the purposes of this study were to evaluate whether perioperative use of point-of-care ultrasound can reduce the worse postoperative outcomes in high surgical patients.
Fifteen healthy subjects under non-invasive ventilation will be have a recording of surface electromyogram, measurements of airway flows and pressures as well as a continuous ultrasound. The provocation of leaks on the Ventilation circuit and expiratory trigger modulation will generate a number of asynchronies between the subject and the respirator. These records will help to assess the agreement between the detection of asynchronies using electromyography of the respiratory muscles (technique of reference) and the diaphragmatic echography. We will also compare the respective performance of two techniques of diaphragmatic exploration (excursion and thickening of the diaphragm). A sensitivity of Ultrasound technique of at least 90% will be interpreted as a satisfactory index of concordance.
Mammography is considered the standard imaging method for breast cancer screening, and is known to result in reduced mortality from breast cancer. However, the diagnostic yield of mammography depends particularly on breast tissue density, with sensitivity as low as 30-48% in dense-breast women. Ultrasound is an attractive adjunct imaging method to mammography as it is widely accessible, relatively inexpensive and well-tolerated by patients. The addition of hand-held ultrasound to mammography has been demonstrated to significantly increase breast cancer detection in women with dense breasts. It is however dependent on the expertise and skill of the operator. In recent years, the FDA has approved the use of the automated breast ultrasound (ABUS) for use in screening of women with dense breast. Unlike handheld ultrasound, the ABUS is relatively simple to use, necessitating less technical training, and results in higher reproducibility. The research aim is to evaluation of automated breast ultrasound (ABUS) regarding the detection and classification of breast lesions, compared to hand-held ultrasound, according to the American College of Radiology Breast Imaging-Reporting and Data System (BI-RADS) classification. The investigator will also evaluate parameters regarding patients' comfort, workflow, and duration of image interpretation.