21 Clinical Trials for Various Conditions
This is a pilot study to test the accuracy and comfort of self-directed ultrasound imaging of cervical dilation and effacement in pregnant women undergoing induction of labor. The study will assess correlation of cervical measurements between self-directed imaging and experienced provider digital cervical examinations.
This clinical trial studies the use of contrast-enhanced ultrasound (CEUS) in estimating tissue pressure in patients with breast cancer. Diagnostic procedures, such as CEUS, may help estimate tissue pressure noninvasively.
Study to assess the feasibility of dialysis clinic staff to perform upper limb mapping ultrasound scans using the Vexev Ultrasound Imaging System.
This is a single-center, prospective study to be undertaken at University of Oregon, Portland, USA. The aim is to evaluate the clinical performance of ScanNav Anatomy PNB when highlighting anatomical structures during UGRA scanning. Specifically, we aim to assess and quantify the correct/incorrect highlighting of anatomical structures associated with ScanNav Anatomy PNB during UGRA scanning.
Central venous catheter placement is a common procedure in the intensive care unit and is a required skill for all residents working in the critical care setting. Central venous catheters (CVC) are placed for a variety of reasons including administration of caustic medications, administration of fluids or blood products for rapid resuscitation, access for hemodynamic monitoring or transvenous pacing, temporary vascular access for dialysis, or inability to obtain peripheral IV access. CVC's are routinely placed in the internal jugular vein in the Vanderbilt medical ICU and ultrasound guidance is used. Placement of the CVC on the right IJ instead of the left IJ is commonly preferred due to the more direct path to the superior vena cava. However, placement in the left IJ may be necessary for a variety of reasons. The investigators intend to compare the standard practice of residents and nurse practitioners placing IJ CVCs in the medical ICU against mandatory screening of the right and left IJ prior to selection of the CVC placement site. The investigators will accomplish this by assessing the relative first pass stick and overall success rates, the rate of aborted procedures, and the rate of complications between standard practice and mandatory screening of bilateral internal jugular veins prior to CVC site selection.
Inadvertent puncture of an unintended object in a vascular access procedure is common and can lead to serious consequences. Inadvertent common carotid artery (CCA) puncture while targeting the internal jugular vein (IJV), for example, is reported to have an incidence of 2% - 8% and usually results in localized hematoma formation. The hematoma may enlarge rapidly if the patient is coagulopathic, or if a large puncture wound is produced by the introduction of the sheath itself into the CCA. Airway obstruction, pseudoaneurysm, arterio-venous fistula formation and retrograde aortic dissection have all been reported as a consequence of CCA puncture. In the presence of occlusive (atheromatous) carotid disease, inadvertent puncture may carry the risk of precipitating a cerebrovascular accident. In this study, we aim to collect color Doppler and B-mode ultrasound videos from the most common ultrasound-guided vascular access sites - internal jugular vein, subclavian vein, femoral vein, basilic vein, and brachial vein. The videos will also include structures in close proximity to the intended veins. Using such database, we will run various vessel tracking and identification algorithms to evaluate their performance. Our ultimate goal is to develop an algorithm that will aid the ultrasound operator in identifying structures and differentiating between arteries and veins.
This study is designed to collect ultrasound images from healthy volunteers in the U.S.
The goal of this study is to demonstrate the feasibility of using a novel, validated panel of Non-Small Cell Lung Cancer (NSCLC) histology-predictive genes (the "A/S signature) as a diagnostic tool for use with small-volume Fine Needle Aspirate (FNA) biopsies. Objectives: 1. To establish FNA biopsy requirements for FNA-based subtype classification of NSCLC. 2. To define a "fixed statistical model" of histologic subtype prediction in NSCLC. Study methods: To establish FNA biopsy requirements for gene expression-based subtype classification of NSCLC, patients with presumed newly diagnosed NSCLC, where radiographic studies and clinical description favor a probable diagnosis of NSCLC, will undergo FNA biopsy according to current standard techniques . For this part of the study, approximately 40 biopsies of confirmed NSCLC will be collected for analysis. To define a fixed statistical model of histologic subtype prediction in NSCLC, we will prospectively collect 50 FNAs. These FNAs will represent Adenocarcinoma (AC) and Squamous Cell Carcinoma (SCC) cases at a ratio of approximately 1:1. Additional cases of not otherwise specified (NOS), should they be encountered, may also be collected for later analysis. FNA samples qualified based on cell number or ribonucleic acid (RNA) yield (depending on the findings of our primary objective)will be assayed on the QGS platform.
The purpose of the study is to evaluate the use of ultrasound scanning of the thoracic spine to define the point of insertion and the depth of the epidural space compared to the blind technique. The study hypothesis is the use of Ultrasound will improve the success rate of epidural placement and may also decrease the rate of complications.
Subjects will be scanned on the QT Ultrasound Breast Scanner. For subjects that may have breast calcifications and/or mass(es) and/or other finding(s) on the QT scan image(s), standard imaging modalities (e.g., mammogram and HHUS) will be performed per ACR recommendations. If available, subjects may provide copies of their breast imaging exams and related reports. Demographics and medical history will be collected.
To evaluate the feasibility of Emergency Medical System (EMS)-performed cPOCUS in the field for diagnosis of acute Intracerebral hemorrhage (ICH)
The purpose of this study is to assess the feasibility of ultrasound in the first trimester, assess the completion rate of ultrasounds for fetal anatomy in the first trimester compared to completion rates of ultrasounds for fetal anatomy in the second trimester and to assess the completion rate of the combination of one ultrasound in the first trimester and one in the second trimesters compared to the individual completion rates of both evaluations in obese pregnant women.
This trial studies how well a Millar Mikro-tip catheter and shear wave elastography measure pressure and stiffness inside tumors among patients with solid tumors undergoing an ultrasound-guided biopsy. A Millar Mikro-tip catheter measures the pressure inside the tumor. Shear wave elastography is similar to an ultrasound and uses sound waves to vibrate the tissue in order to study tissue stiffness. These measurements may help doctors learn if pressure and stiffness are related to intratumoral fibrosis (the thickening and scarring of connective tissue).
This study is designed to see if abdominal ultrasound after planned cesarean delivery can identify women with ongoing intra-abdominal bleeding.
The goal of this clinical research study is to learn how accurately an endobronchial ultrasound transbronchial needle aspiration (EBUS -TBNA) may detect mediastinal lymph node metastases in patients with clinical stage I and II non-small cell lung cancer (NSCLC).
To gather additional training and/or validation data (recorded ultrasound scans) for ScanNav Anatomy PNB in the following categories: * Femoral Nerve (Femoral) * Interpectoral (PECS I) and pectoserratus (PECS II) * Transversus abdominis plane (TAP) * Serratus Plane (SP) * Infra-inguinal Facia Iliaca (Infra-inguinal FI) Data will be collected in the form of "scenes" (target block view) and "non-scenes" (areas adjacent to the target block view).
This is a single-center, prospective study to be undertaken at University of Oregon, Portland, USA. The aim is to provide data on the clinical performance of ScanNav Anatomy PNB for identification of anatomical structures during UGRA scanning, in particular: 1. Assess the benefits of the device to intended users when supervising a trainee who is performing UGRA scanning. 2. Assess the benefits of the device when intended users perform UGRA scanning. 3. Assess risk mitigation by the intended users when performing UGRA scanning.
The aim of clinical study is to assess effectiveness of Bone UltraSonic Scanner (BUSS) versus densitometry (DXA) in osteoporosis detection.
The objective of this study is to evaluate the safety of dexmedetomidine in a pediatric population requiring non-intubated, spontaneous breathing, moderate to deep sedation (NI-MDS) for elective diagnostic or therapeutic procedures, expected to take more than 30 minutes.
Transthoracic echocardiography (TTE) represents an established and fundamental tool for the evaluation of patients with known or suspected cardiovascular disease. Recently, manufacturers have developed handheld echocardiograms small enough to fit in the pocket of a physician's lab coat. Studies assessing these handheld devices have several limitations. While they have generally evaluated the handheld devices favorably, previous studies has not consistently studied handheld devices under the best possible clinical conditions and have not necessarily highlighted the devices' limitations. In this proposal, we seek to analyze the applicability of handheld echocardiograms to standard clinical practice. The investigators plan to use trained sonographers to perform handheld examinations on patients referred for TTE without established cardiovascular disease. The handheld images will be interpreted by experienced, consultant-level echocardiographers. The investigators then plan to compare findings from the handheld echocardiogram to the patient's standard clinical TTE.
The goal of this clinical research study is to characterize the 3-dimensional form and mechanical properties of the breast. Researchers want to do this in order to develop new high technology tools for improving the diagnosis and treatment of breast cancer in women.