A Study of Renal Microvessel Imaging for Chronic Kidney Disease

September 4, 2025 updated by: Shigao Chen, Mayo Clinic

Renal Microvessel Imaging for Characterization of Chronic Kidney Disease

The purpose of this research is to study the efficacy of ultrasound microvessel imaging for evaluation of Chronic Kidney Disease. Definity is an ultrasound contrast agent currently approved by the FDA for use on the heart, liver, and urinary tract. This study will look at its effectiveness on the kidney.

Study Overview

Status

Enrolling by invitation

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

186

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Jacksonville, Florida, United States, 32224
        • Mayo Clinic Florida
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic Minnesota

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

- Healthy volunteers or Chronic Kidney Disease (CKD) patients with clinically indicated renal biopsy.

Exclusion Criteria:

  • Subjects lacking capacity to consent.
  • Vulnerable subjects such as prisoners; pregnant women; nursing mother.
  • Subjects with history of hypersensitivity allergic reactions to ultrasound contrast agents.
  • Patients with high-risk cardiac diseases.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Chronic Kidney Disease Group
Subjects with Chronic Kidney Disease (CKD) with clinically indicated renal biopsy will have microvessel images obtained by Super-Resolution Ultrasound Imaging (SRUI) using Definity ultrasound contrast agent.
Diagnostic test: Super-resolution ultrasound imaging
Imaging technology for microvessel imaging. This technology localizes and tracks individual microbubbles (FDA approved ultrasound contrast agents) to map microvessel morphology and flow speed at a spatial resolution about 10 times higher than conventional ultrasound imaging.
Other Names:
  • SRUI
Drug: Definity
Ultrasound contrast agent administered intravenously
Other Names:
  • Perflutren Lipid Microsphere
Active Comparator: Healthy Control Group
Healthy volunteers with normal eGFR will have microvessel images obtained by Super-Resolution Ultrasound Imaging (SRUI) using Definity ultrasound contrast agent.
Diagnostic test: Super-resolution ultrasound imaging
Imaging technology for microvessel imaging. This technology localizes and tracks individual microbubbles (FDA approved ultrasound contrast agents) to map microvessel morphology and flow speed at a spatial resolution about 10 times higher than conventional ultrasound imaging.
Other Names:
  • SRUI
Drug: Definity
Ultrasound contrast agent administered intravenously
Other Names:
  • Perflutren Lipid Microsphere

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Renal cortex microvessel density
Time Frame: Baseline
Super-Resolution Ultrasound Imaging (SRUI) parameters reported in percentage
Baseline
Renal cortex microvessel diameter
Time Frame: Baseline
Super-Resolution Ultrasound Imaging (SRUI) parameters reported in millimeters (mm)
Baseline
Renal blood flow velocity
Time Frame: Baseline
Super-Resolution Ultrasound Imaging (SRUI) parameters reported in centimeters per second (cm/sec)
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Mayo Clinic

Collaborators

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Investigators

  • Principal Investigator: Shigao Chen, PhD, Mayo Clinic

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 9, 2023

Primary Completion (Estimated)

April 1, 2028

Study Completion (Estimated)

April 1, 2028

Study Registration Dates

First Submitted

February 28, 2023

First Submitted That Met QC Criteria

February 28, 2023

First Posted (Actual)

March 10, 2023

Study Record Updates

Last Update Posted (Estimated)

September 5, 2025

Last Update Submitted That Met QC Criteria

September 4, 2025

Last Verified

September 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 22-006499
  • R01DK129205 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Healthy

Clinical Trials on Super-resolution ultrasound imaging

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in El Salvador

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe