View clinical trials related to Ultrasound Imaging.
Filter by:Caudal block is an easy and effective type of central neuraxial block that is widely used in subumbilical surgeries to provide intraoperative and postoperative analgesia in the pediatric population. Caudal block application with ultrasound (USG) was first applied in 2003. Sacrum, sacral cornular, sacrococcygeal ligament and sacral hiatus can be easily distinguished by ultrasound. The probe is positioned in a horizontal midline position on the lower sacrum. Sacral roots within the caudal epidural space can be seen as hypoechoic ellipses. In addition, anatomical variations of the sacral hiatus and the process area can be clearly observed. A accurate probe use with ultrasound guided is confirmed by advancing the caudal needle in the desired direction, widening in the sacral hiatus with local anesthetic injection, and the turbulence observed during injection into the sacral canal if the color doppler feature is used. Thus, a decrease in complications and an increase in the success of the procedure can be achieved with simultaneous imaging. In addition, in cases where the block is difficult, the in-plane technique can be preferred in the midline plane.The aim of this study is to compare the success rates and postoperative pain levels of caudal block applications with the out of plane technique (probe applied by holding horizontal) and in-plane technique (probe applied vertically), which is routinely applied with ultrasound in pediatric hypospadias surgery.
For nearly half a century, supraglottic airway devices (SGA) have been used in pediatric patients, which are more practical than face masks, facilitate oxygenation and ventilation without the need for endotracheal intubation, and less invasive than endotracheal tubes. I-Gel is a supraglottic airway management device introduced in 2007, made of a medical grade thermoplastic elastomer, designed to create a non-inflatable, anatomical seal in the pharyngeal, laryngeal and perilaryngeal structures that prevents compression trauma. Recently, the use of I-Gel has become popular in children undergoing surgery that does not require muscle relaxation. It is important to place an I-Gel in the most appropriate position in order to provide adequate ventilation and prevent complications such as mucosal injury, glottic ptosis, and gastric insufflation with potential aspiration. Successful placement is usually clinically assessed by a capnogram with endtidal carbon dioxide (ETCO2) value, visual examination and auscultation with appropriate chest elevation, absence of oropharyngeal leakage at 20 cm H2O peak inspiratory pressure. Although Fiberoptic Bronchoscope (FOB) is accepted as the preferred verification tool for direct visualization, some studies on I-Gel position using FOB reported that I-Gel placement should be repositioned in some children (12.8-49%). Ultrasonography (USG), which has recently entered the practice of upper airway examination, has become a valuable, non-invasive, simple and portable technology for evaluating airway management even in upper airway anatomy impaired by pathology or trauma. The aim of this study is to compare the use of USG with the FOB to evaluate I-Gel placement in pediatric patients. The primary endpoint is to compare the incidence of for I-Gel malposition between USG and FOB. Secondary endpoints are to find the correlation between I-Gel's USG and FOB-detected malposition and to determine the diagnostic performance of the USG.
A multi-center, prospective, cohort study to evaluate the efficiency of breast cancer screening based on Automated Breast Ultrasound (AB US) with remote reading mode.
The goal of this study is to investigate potential relations of ultrasound-based muscle architecture parameters and isometric knee flexor muscle strength (IKFS) in healthy individuals. IKFS was measured for twenty participants (22.15±2.41 y.o; 8 females, 12 males) by a hand-held dynamometer. Investigated parameters were total and individual cross-sectional areas (CSA), Muscle-Thickness (MT), and pennation-angle (PA) for Biceps Femoris-long head (LBF), Semitendinosus (ST) and Semimembranosus (SM) muscles at 25%, 50% and 75% length of the thigh.
After endotracheal intubation verifying the location of endotracheal tube is of utmost importance. Many methods have been applied but none is perfect. The standard practice in the investigator's center has been to use auscultation of chest with capnography. Ultrasound machines are now gaining popularity and their access extends from operation theatres, emergency rooms and even many primary health centres. Both capnography and ultrasonography are safe. This study found out that Ultrasonography and waveform capnography are both reliable methods of confirming endotracheal tube position. The use of ultrasound could help reduce time and increase precision of confirming endotracheal tube position. Ultrasound can confirm endotracheal tube position before manual bag ventilations, and thus may prevent aspiration of gastric contents into patient's lungs.
This mutlicentre study at three hospitals in south Wales, UK, will be used to determine if modern machine learning techniques can help the anaesthetist locate the target by highlighting key anatomical features on the ultrasound image in real time. The study consists of two phases: The objective of Phase I is to train a computer-aided system to identify target structures in regional anaesthesia when applied in the following categories: - Adductor canal - Popliteal - Fascia Iliaca - Rectus sheath - Axillary The objective of Phase II is to estimate the success rate and safety of the computer system being developed.
At most institutions, the average patient with clinical concern for PE(pulmonary embolism) will have a CT angiogram(CTA) with contrast of the lungs performed to evaluate for a clot. However, CTA has risks including contrast- induced allergic reactions and nephropathy, as well as radiation which has been linked to development of cancer later in life. There is literature that has looked at using lower extremity doppler ultrasound first to evaluate for a DVT (deep venous thrombosis) in patients where there is concern for a PE. There is also literature showing that emergency medicine physicians can perform adequate lower extremity compression ultrasounds (LCUS), at the bedside with results similar to that of the ultrasound tech. The goal of this project is to fuse both principles by having emergency medicine physicians perform LCUS at the bedside, to help reduce CTA utilization in the evaluation of PE.