The Diameter of the Middle Cerebral Artery Measured With Magnetic Resonance Angiography

March 30, 2009 updated by: Danish Headache Center

The Diameter of the Middle Cerebral Artery Measured With Magnetic Resonance Angiography (MRA) Under Provocation With Glyceryl Trinitrate in Healthy Volunteers.

To examine the ability of MRA to measure the effect of GTN on the intra-cranial vascular response during the GTN-induced headache in healthy volunteers.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The only intra cranial structures innervated by sensory nerves, and therefore a possible source of the headpain are the meninges and the large intracerebral arteries. The dilatation of the cerebral vessels may not be the origin of the head pain per se, but measurements of the intra cerebral vascular bed in the past has proven valuable in the migraine-research, and has helped elucidate the basis for the migraine aura (Olesen, Friberg et al. 1990). The effects of different signal molecules on the intra cerebral vasculature continue to be an important field in the migraine research, in the search for possible pain causing signaling molecules.

Therefore we have set up at study to examine if MR-Angiography (MRA) can be used for monitoring of the vascular response after challenge with the known vasodilator GTN. This drug was chosen because it is well characterized and a large body of evidence from earlier studies could serve as background data (Thomsen 1997).

Study Type

Interventional

Enrollment

12

Phase

  • Not Applicable

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 to 40 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • healthy volunteers

Exclusion Criteria:

  • history of migraine or any other type of primary headaches; any kind of daily medication (including prophylactic headache therapy but not oral contraceptives); excessive use of analgesics (corresponding to >2 g aspirin/day), pregnancy and all known contraindications for MR-examinations incl. claustrophobia.

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: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Outcome Measure
The primary endpoints were the difference between the area under the curve of the MCA area and the difference between the area under the curve of the diameter of the MCA on an active day and on a placebo day recorded over 60 mins.

Secondary Outcome Measures

Outcome Measure
The secondary endpoints were difference in the area under the curve for the relative changes in area in percent deviation from baseline, and the difference in headache response.

Collaborators and Investigators

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

Sponsor

Danish Headache Center

Investigators

  • Study Chair: Jakob Møller Hansen, MD, Danish Headache Center

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

June 1, 2004

Study Completion

January 1, 2005

Study Registration Dates

First Submitted

November 21, 2005

First Submitted That Met QC Criteria

November 21, 2005

First Posted (Estimate)

November 22, 2005

Study Record Updates

Last Update Posted (Estimate)

April 1, 2009

Last Update Submitted That Met QC Criteria

March 30, 2009

Last Verified

May 1, 2004

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MRA-GTN2004

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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