Measurement of Kidney Blood Flow and Oxygen Levels by MRI

This study has been completed.
Information provided by (Responsible Party):
Michael Rocco, Wake Forest School of Medicine Identifier:
First received: March 18, 2011
Last updated: April 8, 2015
Last verified: April 2015

Comparison of renal blood flow measurements by PAH clearance and MRI

Condition Intervention
Chronic Kidney Disease
Drug: Furosemide

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: MRI for the Non-invasive Determination of Renal Blood Flow and Renal Oxygenation

Resource links provided by NLM:

Further study details as provided by Wake Forest School of Medicine:

Primary Outcome Measures:
  • Measurement of Renal Blood Flow of the Kidney by Both the PAH Method and by MRI [ Time Frame: Renal blood flow is estimated over 1 hour by PAH and 30 minutes by MRI (day 1) ] [ Designated as safety issue: No ]
    Renal blood flow is estimated by the PAH method.

Secondary Outcome Measures:
  • Measurement of Regional Blood Oxygenation by MRI [ Time Frame: One measure after furosemide (day 1) ] [ Designated as safety issue: No ]
    Estimate of renal blood flow by using MRI scans before and after the administration of furosemide

Enrollment: 10
Study Start Date: October 2010
Study Completion Date: June 2013
Primary Completion Date: June 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: PAH
PAH measure of renal blood flow is first performed on subjects
Active Comparator: MRI after furosemide
After the PAH measurement is complete, subjects receive 20 mg furosemide and undergo BOLD MRI to estimate renal blood flow
Drug: Furosemide
Renal blood flow is measured after the administration of 20 mg of furosemide during MRI scan only.
Other Name: Lasix

Detailed Description:

The traditional measurement of renal blood flow in ml/min involves the collection of multiple blood and urine samples after an infusion of a drug called para-aminohippurate (PAH) is given. In this study, the investigators determine the ability of MRI to estimate renal blood flow. The primary hypothesis is that renal blood flow as measured by PAH clearance is similar to renal blood flow as estimated by MRI. The measurements by PAH clearance and MRI are both performed on the same day.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

In this study, the investigators will enroll 16 men and women aged ≥ 18 years with Stage II - V chronic kidney disease (CKD). In addition, the investigators will enroll 4 subjects with a glomerular filtration rate (GFR) of greater than 60 ml/min who do not have any evidence of CKD.

Exclusion Criteria:

This study excludes those not suitable for MRI or for the interventional pharmacologic procedures.

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Please refer to this study by its identifier: NCT01318967

United States, North Carolina
Wake Forest University Health Sciences
Winston-Salem, North Carolina, United States, 27157
Sponsors and Collaborators
Wake Forest School of Medicine
Principal Investigator: Michael Rocco, MD Wake Forest School of Medicine
  More Information

No publications provided

Responsible Party: Michael Rocco, Professor Of Internal Medicine/Nephrology, Wake Forest School of Medicine Identifier: NCT01318967     History of Changes
Other Study ID Numbers: 0537GCRC
Study First Received: March 18, 2011
Results First Received: December 8, 2014
Last Updated: April 8, 2015
Health Authority: United States: Institutional Review Board

Keywords provided by Wake Forest School of Medicine:
Renal blood flow
Regional renal blood flow

Additional relevant MeSH terms:
Kidney Diseases
Renal Insufficiency, Chronic
Renal Insufficiency
Urologic Diseases
Cardiovascular Agents
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Natriuretic Agents
Pharmacologic Actions
Physiological Effects of Drugs
Sodium Potassium Chloride Symporter Inhibitors
Therapeutic Uses processed this record on October 13, 2015