NCT00001874|Completed
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Sponsor study identifier
Secondary identifiers
observational
400
1 country
1
Study Start
February 22, 1999
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
August 3, 2009
Actual (reported)Study Completion
August 3, 2009
Actual (reported)Magnetic resonance imaging (MRI) and spectroscopy are diagnostic tools that create high quality images of the human body without the use of X-ray (radiation). MRI uses different levels of magnetic fields to create images of the body and organs. Occasionally, researchers will give patients undergoing a MRI an injection of a contrast substance. The contrast substance works by brightening areas of the magnetic resonance image. In this study researchers plan to use magnetic resonance imaging with contrast substances and exercise on normal volunteers in order to evaluate different aspects of its performance. Information gathered from this study may be used to develop more specific research studies involving MRI....
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
August 3, 2009
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 22, 1999
Date type not reportedThis date has not been verified as actual or estimated.
November 3, 1999
Actual (reported)November 4, 1999
Actual (reported)August 3, 2009
Actual (reported)August 3, 2009
Actual (reported)Suburban Hospital
Bethesda, Maryland, 20814, United States
Frank JA, Mattay VS, Duyn J, Sobering G, Barrios FA, Zigun J, Sexton R, Kwok P, Woo J, Moonen C, et al. Measurement of relative cerebral blood volume changes with visual stimulation by 'double-dose' gadopentetate-dimeglumine-enhanced dynamic magnetic resonance imaging. Invest Radiol. 1994 Jun;29 Suppl 2:S157-60. doi: 10.1097/00004424-199406001-00052. No abstract available.
Mattay VS, Weinberger DR, Barrios FA, Sobering GS, Kotrla KJ, van Gelderen P, Duyn JH, Sexton RH, Moonen CT, Frank JA. Brain mapping with functional MR imaging: comparison of gradient-echo--based exogenous and endogenous contrast techniques. Radiology. 1995 Mar;194(3):687-91. doi: 10.1148/radiology.194.3.7862963.
First Submitted
November 3, 1999
First Posted
November 4, 1999
Study Start
February 22, 1999
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
August 3, 2009
Actual (reported)Effect of Betaine and Folic Acid on Vascular Function in Healthy Humans
Contact the study team to confirm eligibility.
Niendorf HP, Dinger JC, Haustein J, Cornelius I, Alhassan A, Clauss W. Tolerance data of Gd-DTPA: a review. Eur J Radiol. 1991 Jul-Aug;13(1):15-20. doi: 10.1016/0720-048x(91)90049-2.
Study Completion
August 3, 2009
Actual (reported)Last Updated
July 2, 2017
Record last verified: 2009-08-03
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Source: ClinicalTrials.gov.
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