View clinical trials related to Ultrasound.
Filter by:The primary objective of this study is to assess the utility of ultrasound guidance in the closed reduction of pediatric forearm fractures in the pediatric emergency department. The investigators will compare post-reduction radiologic outcomes between the experimental group (ultrasound guided closed forearm fracture reduction) and control group (standard of care blinded closed forearm fracture reduction) to determine if there is a difference in the number of adequate reductions between groups. Secondary objectives include comparing provider satisfaction with the reduction procedure, number of patients requiring repeat reductions, time for reduction, number of patients requiring operative repair after reduction, with the reduction procedure and comparison between post-reduction ultrasound and x-ray interpretation.
The study evaluates whether routine use of ultrasound for sheath insertion during radial or femoral angiography or angioplasty has any impact on: number of punctures, patient discomfort, procedural length, successfull procedure or ideal vessel puncture.
Adult soft tissue sarcomas (STS) are rare tumours with an estimated incidence averaging 5/100 000/year in Europe. The prognosis of soft tissue sarcomas is dominated by local recurrence and distant metastasis. A link seems to exist between local recurrence and overall survival. Local recurrence occurs in approximately 16-29% of STS of the limbs. A combination of resection and radiotherapy is the optimal treatment of primary tumours according to histological grade and surgical result. Modern imaging techniques such as ultrasound (US), magnetic resonance (MR) and computed tomography (CT) are normally used to rule-out a recurrence in patients operated on for STS. However, none of this technique is perfect and different advantages and drawbacks have to be considered in choosing one or another technique. In the past, US was used in tumour follow-up to detect tumour recurrences, however these studies didn't use high-resolution transducers and the timing of imaging respect to surgery was not defined. The recent advances in transducer technology improved the diagnostic capabilities of US. For the evaluation of limbs soft-tissue masses, US is widely used as a first level modality. The reasons are that US is widely available, fast, easily repeatable and often more accessible than CT and MR Imaging. In addition, US equipped with high-frequency transducers have a spatial resolution that may be comparable or higher than that of MR Imaging and CT in the evaluation of superficial soft-tissues. US and MR Imaging are often not able to differentiate benign from malignant tumours, therefore several lesions detected with US or MR Imaging warrant biopsy. The clinical practice guidelines of the ESMO (European Society of Medical Oncology) published in 2010 found that there are no published data to indicate the optimal routine follow-up policy of surgically treated patients with localized disease. Moreover, it has not been demonstrated that, for limb sarcomas recurrences, MR Imaging is superior and cost-effective compared to US for the assessment of the primary site. Considering that surgically treated intermediate-/high-grade patient may be followed frequently, even every 3-4 months in the first 2-3 years and considering that performing US is easier than having MR Imaging, the purpose of this study is to evaluate the diagnostic performance of US in the detection of local recurrences of adults patients with soft tissue sarcomas of the limb.
A prospective study to compare the use of point of care echocardiography versus routine chest radiography for the assessment of central venous catheter placement.
The achievement of peripheral nerve block requires several needle passes, with each of them being at risk of causing nerve injury either by direct trauma or intraneural injection even with the use of the ultrasound. The ultrasound guided supraclavicular brachial plexus block is known to be at risk of pneumothorax and / or nerve injury. This study is designed to determine the maximal effective distance away from the nerve for the injection to be effective.
Investigators designed a prospective randomized controlled study to compare the long-axis/in-plane and short-axis/out-of-plane methods during the ultrasound-guided arterial catheterization in pediatric patients younger than 5 years old.
With this project the investigators wish to: 1. Test the reproducibility of Amlang's ultrasound classification by examining the intra- and inter-rater reliability. 2. Investigate whether Amlang's ultrasound classification is able to predict which patients are likely to develop complications when treated non-operatively. 3. Investigate whether Barfod's length measurement is able to predict which patients are likely to develop complications when treated non-operatively.
Thousands of vein punctures are done every day at hospitals worldwide. Vein puncture are performed in connection with blood sampling, peripheral intravenous catheter (PIV) placement or blood donation. The predominantly used venous for blood withdraw are in the cubital region because in this area venous are most superficial placed and most often visible for the human eye. However, when using the usual blind landmark and palpation method in this region, it often proves exceedingly difficult or even impossible to obtain peripheral venous access on patients who are obese, chronically ill, hypovolemic or intravenous drug users. Various studies have shown that the success rate for establishing a vascular access with ultrasound compared to blind landmark technique is higher in patients with difficult access. When ultrasound is used to establish intravascular access, the prerequisite sterile puncture area can be challenging to meet due to ultrasound gel on the area and the fact that the ultrasound transducer cannot be wiped clean with alcohol after being in contact with a patient's skin or blood. A strict sterile procedure is important to reduce complications related to infection.The traditional way of coping with this is by covering the transducer and the wire in a long sterile sheet and using sterile gel. The sheet must be tight with rubber band around the transducer and pulled tightly around the transducer foot to prevent artefacts from appearing on the screen. This is an expensive and time consuming method, and it still leaves the problem with gel in the puncture area. The investigators have developed a method by where all these problems are solved by using, a slightly modified, commercial drape in combination with the Dynamic Needle Tip Positioning technique The investigators hypothesize that it is possible to perform ultrasound-guided venous puncture with a sterile and dry puncture area and that puncture can be performed proximal and distal to the traditional puncture side. It is a procedure presenting study that serves to demonstrate the feasibility of the method in ten healthy volunteers. The study will take place at Aarhus University Hospital, Skejby.
A randomised controlled trial comparing the use of pre-procedural ultrasound scanning with manual palpation to identify landmarks for performance of spinal anaesthesia.
The purpose of this study is to determine whether ultrasound-based assessment of intestinal stiffness in patients with Crohn's disease predicts the effectiveness of medical therapy or the need for surgical resection.