Assessment of Renal Physiology by Magnetic Resonance Imaging (MRI) in Normal Volunteers

January 13, 2012 updated by: University Health Network, Toronto

Assessment of Renal Physiology (Glomerular Filtration Rate and Blood Flow) by MRI With Validation by Inulin and Para-Aminohippuric Acid Clearance in Normal Volunteers

Estimation of Glomerular Filtration Rate (GFR) is the primary test used to assess patients with renal disease. Although serum creatinine based GFR and nuclear medicine based estimations are routinely used in clinical practice, GFR estimation by Inulin is the recommended gold standard. Inulin based estimation of GFR is cumbersome and time consuming.

A decrease in blood flow to the kidney (Renal Blood Flow (RBF)) is known to cause a decrease in GFR. RBF is typically determined using radioactive tracers, contrast MRI or a cumbersome para-aminohippuric acid (PAH) clearance method.

MRI based assessment of GFR and RBF have been suggested to provide reasonable accuracy. Most of these studies did not compare the GFR and RBF estimation directly to Inulin and PAH clearance which are ther gold standards . In this study we propose to estimate MRI based GFR estimation directly to Inulin and noncontrast MRI based derived RBF to PAH to assess if MRI is an accurate test of kidney function.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

24

Phase

  • Not Applicable

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

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5G 2C4
        • University Health Network

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

16 years to 63 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy male or female volunteers with no known renal disease
  • Ages between 18-65 years
  • Normal routine urinalysis
  • Estimated GFR (eGFR) >=90mls/min
  • Arterial pressure < 130/85
  • No medications (birth control pills and vitamins are acceptable)

Exclusion Criteria:

  • Pregnancy
  • Age <18y or >65y
  • Proteinuria or hematuria as determined by routine urinalysis
  • Estimate GFR (eGFR) < 90 ml/min
  • Known history or requirement of treatment for hypertension
  • Known allergy to inulin or PAH
  • MRI contrast allergy, general contraindications to MRI such as pacemaker, etc.

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: Screening
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: GFR and RBF followed by MRI
Subjects will undergo GFR and renal blood flow estimation by Inulin and PAH clearance method, followed by a MRI test. The MRI examination will be performed on the same day as the inulin/PAH procedure.
Procedure: Inulin and PAH clearance and MRI

GFR and renal blood flow estimation by Inulin and PAH clearance will be performed in the Renal Physiology Lab for approximately 2.5 hours;

The MRI test will be performed afterwards at Medical Imaging department and last about 45 minutes.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
GFR estimation comparison between results obtained by MRI and Inulin clearance method. Blood flow estimation comparison between results obtained by MRI and PAH clearance method.
Time Frame: 1 year
1 year

Collaborators and Investigators

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

Sponsor

University Health Network, Toronto

Investigators

  • Principal Investigator: Kartik Jhaveri, M.D., University Health Network, Toronto

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

January 1, 2010

Primary Completion (Actual)

December 1, 2011

Study Completion (Actual)

December 1, 2011

Study Registration Dates

First Submitted

July 8, 2009

First Submitted That Met QC Criteria

July 9, 2009

First Posted (Estimate)

July 10, 2009

Study Record Updates

Last Update Posted (Estimate)

January 18, 2012

Last Update Submitted That Met QC Criteria

January 13, 2012

Last Verified

January 1, 2012

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • UHN09-0096B

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.

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