View clinical trials related to Ultrasonography.
Filter by:Conventionally, short-axis out-of-plane (SAX) or long-axis in-plane (LAX) ultrasound views are commonly used to guide internal jugular vein catheterization. SAX dynamic needle tip positioning (SAX-DNTP) is a novel ultrasound imaging technique that enables continuous visualization of the needle tip during ultrasound-guided cannulation; When the needle tip is imaged as a hyperechoic dot, the ultrasound probe is moved a few millimeters, and then the needle is advanced until the needle tip reappears in the vessel lumen. The process is repeated until the needle is advanced more than 1 cm into the lumen. The catheter is then introduced into the vessel. The aim of this study was to compare the first pass success rate of internal jugular vein catheterization between SAX-DNTP and the conventional LAX technique.
Detailed study of ultrasonographic caudal epidural anatomy
Lung Ultrasonography (US) has been shown to be effective for verifying endotracheal tube (ETT) position in adults and children but has been less studied in neonates. The aim of this study is to evaluate the performance of lung US in determining correct ETT position in neonates, in comparison with X Ray
The investigators will compare the success rate, the consumed time, the number of needle passing, the depth and angle of the needle, the anesthetic effect, complications, pain and patient's satisfaction between 'Real-time scan' and 'Pre-procedure scan', when we performing spinal/epidural combined anesthesia.
To assess the quality of images and diagnostic ability of a handheld device under two thousand dollars against those of a bigger and more expensive ultrasound machine.
The aim of this study is to determine the effect of imaging angle on the measurement of fetal cisterna magna (CM) in the second trimester. Fetal CM will be prospectively measured in women at 18-24.6 weeks' gestation. Measurements will be made on different angles between the transducer and fetal cerebellar axial plane with internal landmarks. Design: Observative, cross sectional
The routine use of cervical collar in emergency medical conditions has recently been questioned. The application of cervical collars, as their opponents point out, results in deterioration of intubation conditions, intensification of pain in the region of mastoid processes, and impaired venous outflow from the head.
This study is conducted to explore the feasibility and value of Intraoperative ultrasonographic localization of pulmonary nodules in video-assisted thoracoscopic surgery (VATS).
Investigators aimed to explore the feasibility of smart glasses connected to a wireless ultrasound transducer for the peripheral venous access. Residents who have basic skills of ultrasound guided procedure participate in the simulation. Each participant plays the following two roles for ultrasound guided peripheral venous access; ultrasound guided peripheral venous access with and without wearing smart glasses. The order of performing two roles is determined by a randomized process and the gap between two roles are five days. The primary outcome is the time of successful blood aspiration, and secondary outcomes are first time success rate, the number of skin puncture, the number of needle redirection, the number of head movement, and subjective difficulty.
This study establishes reference material of selected lower extremity nerves at pre-defined sites with high-resolution ultrasound. Furthermore in this study, high-resolution ultrasound of patients with common fibular compression neuropathy and patients with type 2 diabetic polyneuropathy involving the common fibular nerve will be examined and compared to healthy controls. High-resolution ultrasound measurements will be correlated with history, clinical information and electrophysiological data.