Ultrasound Research Center

Below are current clinical trials.

25 studies in Ultrasound Research Center
(all studies, either open or closed).

Filter this list of studies by location, status and more.

1. A Study to Assess Neuromuscular Ultrasound to Predict the Duration of Mechanical Ventilation.

   Rochester, Minn.

   The purpose of this study is to evaluate whether or not the diaphragm and abdominal muscle thickness determine the duration of mechanical ventilation in adult critically ill patients.

2. A Study Comparing Ultrasound versus Nerve Stimulator Guidance Used with a Nerve Block for Postoperative Knee Pain Control

   Scottsdale/Phoenix, Ariz.

   The purpose of this study is to compare the use of ultrasound guidance and nerve stimulator guidance with a popliteal (knee) nerve block for postoperative pain control.

3. A Study to Determine the Feasibility of Doppler Ultrasound of Large Arterial Systems of the Brain as Vascular Involvement Markers in Presbyacusis and Presbyvestibulopathy

   Jacksonville, Fla.

   The purpose of this study is to benchmark the feasibility of carotid artery biomechanical analysis and vertebral-basilar Transcranial Doppler (TCD) as markers of vascular involvement in presbyacusis and presbyvestibulopathy.

4. A Study to Assess the Reproducibility of Carotid Doppler Velocity Measurements in the Presence of Disease

   Rochester, Minn.

   The overall objective of this study is to assess the reproducibility of carotid doppler velocity measurements in the presence of disease.

5. A Study of Two-Dimensional Echocardiography to Improve Initial Diagnosis of Acute Coronary Syndrome in Patients with Chest Pain

   Rochester, Minn.

   The purpose of this study is to see if using two-dimensional speckle tracking echocardiography improves the initial diagnosis of acute coronary syndrome in patients with chest pain who visit the emergency department. 

6. A Study to Evaluate the Use of Lung and intra-abdominal vessels Ultrasond for Intradialytic Complications in Hospitalized Patients on Intermittent Hemodialysis

   Rochester, Minn.

   The purpose of this study is to investigate hospitalized, non-ICU patients undergoing intermittent hemodialysis (HD) to determine:

   • If the combined use of lung and intra-abdominal vessels ultrasound in volume assessment would be better for estimation of dry weight
   • If the changes of the lung ultrasound B line numbers as well as portal venous flow pulsatility and IVC diameters could predict intra-dialytic manifestations and/or complications, such as hypotension, hypertension, tachycardia, and change in oxygen requirements
   • If findings seen with a hand-held scanner are similar to a portable ultrasound scanner

7. Ultrasound Image Quality of the Brachial Plexus Before and After Shoulder Arthroscopy

   Rochester, Minn.

   The objective of the study is to determine if there is a difference in ultrasound image quality of the interscalene block anatomy, at point of care, pre- versus post-operatively in a cohort of patients undergoing shoulder arthroscopy who routinely receive blockade of the brachial plexus for postoperative analgesia.

8. New Technologies to Determine Carotid Plaque Vulnerability

   Rochester, Minn.

   Hypothesis: Identification of vulnerable atherosclerotic plaques (with or without neovascularization) using carotid CEUS is an independent predictor of MACE (over clinical risk factors, stress echo wall motion results, and carotid ultrasound two-dimensional speckle tracking strain indices).

   Primary Aims:

   1. Evaluate the diagnostic role of carotid CEUS and two-dimensional speckle tracking strain imaging for detection of carotid plaque:

      • To determine the feasibility and safety of Carotid CEUS and Two-dimensional speckle tracking strain imaging SE .
      • To determine if carotid CEUS and two-dimensional speckle tracking strain imaging findings are associated with coronary angiographic results in those patients undergoing clinically indicated cardiac catheterization.
      • To determine the diagnostic accuracy of CEUS in identifying a vulnerable atherosclerotic plaque and neovascularization compared to carotid MRI, in a subset of patients.

   2. Evaluate the prognostic role of carotid CEUS and two-dimensional speckle tracking strain imaging for prediction of MACE:

      • To determine if plaque identification (with or without neovascularization) on Carotid CEUS SE can improve the overall prediction of MACE over stress echo results alone
      • To determine if Carotid ultrasound two-dimensional speckle tracking strain indices can improve the overall prediction of MACE over stress echo results alone.
      • To determine if the detection of plaque neovascularization by Carotid CEUS is an independent predictor of MACE (over clinical risk factors, stress echo wall motion results, and carotid ultrasound two-dimensional speckle tracking strain indices).

9. Study to Determine if Ultrasound Surface Wave Elastography Can Provide Noninvasive and Accurate Evaluation of Limb Lymphedema

   Rochester, Minn.

   The purpose of this study is to determine if ultrasound surface wave elastography (USWE) produces different recording patterns in healthy and lymphadematous limbs, to establish the relationship between USWE recording values and stages of lymphedema, and to understand the correlation between USWE lymphedema evaluation and other tracking modalities.

    

10. New Technologies to Determine Carotid Plaque Vulnerability in Patients With Significant Carotid Plaques

    Rochester, Minn.

    The researchers are trying to determine if the characterization of "vulnerable" carotid artery plaques can be accomplished with ultrasound-based methods that look for vessels in the plaque and measure the plaque stiffness.