AtherosclerosisPhase 1NCT00001946
Comparison of Magnetic Resonance Angiography and Standard Angiography in Diagnosing Atherosclerosis
A Phase 1 study testing Magnetic resonance angiography in people with Atherosclerosis, run by National Institutes of Health Clinical Center (CC) at 1 site in United States.
Trial summary
This study will evaluate ways to improve magnetic resonance angiography (MRA) for diagnosing atherosclerosis (hardening and narrowing of the arteries). MRA is a new method for looking at arteries and veins without standard angiography, which requires inserting a catheter into a blood vessel, injecting a contrast… Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Atherosclerosis
- What is being tested?
- Magnetic resonance angiography
- Type of treatment
- Surgery or procedure
- How many people
- 40 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 1999to Sep 2002
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Patient must be willing to participate in the study.
Patient must have documented atherosclerotic disease of an extracranial vessel by angiography performed within 72 hours of the MRA.
Patient must be referred by a physician who is caring for the patient and to whom the results will be provided.
Patient must be clinically stable and be judged by their physician able to tolerate lying in the MR gantry for up to 1.5 hours.
Patient must have serum Creatinine value less than 3.0mg/dl.
Must not have any contraindication for MRI including: pacemaker or other implanted electronic device; cochlear implants; metal in the eye; embedded shrapnel fragments; cerebral aneurysm clips; or medical Infusion pumps.
Must not have an allergy to Gadolinium based contrast media.
Must not have unsatisfactory performance status as judged by the referring physician such that the patient could not tolerate an MRI scan for 1.5 hours. Examples of medical conditions that would not be accepted would include unstable angina, dyspnea at rest, severe pain at rest, and severe back pain.
Must not have intercurrent illness that requires treatment that would be jeopardized by the MRA scan.
Subjects must not require sedation for MRI studies other than administered normally for a conventional angiogram.
Must not be pregnant.
Must not be nursing mothers.
Trial locations and contacts
1 site in 1 country.
United States1 site
Warren G. Magnuson Clinical Center (CC)
Bethesda, Maryland, 20892
About this study
Official title: A Comparison of Contrast Enhanced Magnetic Resonance Angiography (MRA) and Conventional Angiography in the Diagnosis of Atherosclerotic Disease: A Pilot Study
This study will evaluate ways to improve magnetic resonance angiography (MRA) for diagnosing atherosclerosis (hardening and narrowing of the arteries).
MRA is a new method for looking at arteries and veins without standard angiography, which requires inserting a catheter into a blood vessel, injecting a contrast material, and obtaining X-ray images. Current MRA techniques, however, do not depict the lumen (cavity) of small vessels well enough to accurately determine the extent of their narrowing. This study will test image processing methods with the eventual goal of improving MRA accuracy to the point that it can replace X-ray catheter angiography for diagnosing atherosclerotic disease.
Patients with atherosclerosis who have had conventional angiography at Suburban Hospital in Bethesda, MD, may be considered for this study. They will be screened with a brief history and physical examination, and those enrolled will have a MRA scan within 72 hours of their conventional angiogram. For this procedure, a catheter is placed in a vein in the patient's arm and the patient lies on a table that slides into a magnetic resonance imaging (MRI) scanner-a large donut-shaped machine with a magnetic field. Surface coils-flexible, padded antennae used to improve the quality of the pictures-are wrapped around the patient's legs. At times during the scan, the patient is asked to hold his or her breath for several seconds, and a contrast material called gadolinium is injected through the catheter in the vein. This substance enhances the images of blood flow in the vessels. The procedure generally takes about an hour and a half, although the actual imaging takes only a small part of that time.
Read the detailed description
Contrast Enhanced Magnetic Resonance Angiography (MRA) is a developing technology for the non-invasive evaluation of arterial and venous structures which does not require x-ray based catheter angiography. While dramatic progress in MRA has recently been made, there are still substantial limitations in the accuracy of MRA in grading stenoses and detecting small accessory vessels. The purpose of this study is to recruit patients with documented atherosclerotic disease as confirmed on catheter angiography performed at Suburban Hospital for evaluation with state-of-the-art MRA on MRI units, also at Suburban Hospital. We intend to test new surface coils, new pulse sequence designs, and advanced image processing algorithms in order to improve MRA accuracy to the point that a large-scale study of MRA vs. conventional angiography is possible. The goal of this pilot study is to improve MRA to the point that it can reliably replace diagnostic x-ray catheter angiography in the evaluation of patients with atherosclerotic disease.
- Conditions
- Atherosclerosis
- Being tested
- Magnetic resonance angiography
- Keywords
- Magnetic Resonance Angiography, Gadolinium, Suburban Hospital, Atherosclerosis
- Medical subject headings
- Atherosclerosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Magnetic resonance angiographyProcedure or surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Jan 2000 (estimated)
- Study startDec 1999
- Study completionSep 2002
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for AtherosclerosisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Enrolment
- 40 participants
Sponsor and investigators
- Lead sponsor
- National Institutes of Health Clinical Center (CC)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001946
- Sponsor's protocol ID
- 000028
- Other IDs
- 00-CC-0028
- Status last verified
- Sep 2002
- First submitted
- 18 Jan 2000
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Prince MR, Yucel EK, Kaufman JA, Harrison DC, Geller SC. Dynamic gadolinium-enhanced three-dimensional abdominal MR arteriography. J Magn Reson Imaging. 1993 Nov-Dec;3(6):877-81. doi: 10.1002/jmri.1880030614.
PubMed 8280977Prince MR. Peripheral vascular MR angiography: the time has come. Radiology. 1998 Mar;206(3):592-3. doi: 10.1148/radiology.206.3.9494471. No abstract available.
PubMed 9494471Prince MR. Contrast-enhanced MR angiography: theory and optimization. Magn Reson Imaging Clin N Am. 1998 May;6(2):257-67.
PubMed 9560485
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Comparison of Contrast Enhanced Magnetic Resonance Angiography (MRA) and Conventional Angiography in the Diagnosis of Atherosclerotic Disease: A Pilot Study
- ClinicalTrials.gov ID
- NCT00001946
- Acronym / sponsor ID
- 000028
- Conditions
- Atherosclerosis
- Keywords
- Magnetic Resonance Angiography, Gadolinium, Suburban Hospital, Atherosclerosis
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants
- Lead sponsor
- National Institutes of Health Clinical Center (CC)US National Institutes of Health
- Study start
- Dec 1999
- Study completion
- Sep 2002
- First posted
- 19 Jan 2000 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will evaluate ways to improve magnetic resonance angiography (MRA) for diagnosing atherosclerosis (hardening and narrowing of the arteries).
MRA is a new method for looking at arteries and veins without standard angiography, which requires inserting a catheter into a blood vessel, injecting a contrast material, and obtaining X-ray images. Current MRA techniques, however, do not depict the lumen (cavity) of small vessels well enough to accurately determine the extent of their narrowing. This study will test image processing methods with the eventual goal of improving MRA accuracy to the point that it can replace X-ray catheter angiography for diagnosing atherosclerotic disease.
Patients with atherosclerosis who have had conventional angiography at Suburban Hospital in Bethesda, MD, may be considered for this study. They will be screened with a brief history and physical examination, and those enrolled will have a MRA scan within 72 hours of their conventional angiogram. For this procedure, a catheter is placed in a vein in the patient's arm and the patient lies on a table that slides into a magnetic resonance imaging (MRI) scanner-a large donut-shaped machine with a magnetic field. Surface coils-flexible, padded antennae used to improve the quality of the pictures-are wrapped around the patient's legs. At times during the scan, the patient is asked to hold his or her breath for several seconds, and a contrast material called gadolinium is injected through the catheter in the vein. This substance enhances the images of blood flow in the vessels. The procedure generally takes about an hour and a half, although the actual imaging takes only a small part of that time.
Detailed description
Contrast Enhanced Magnetic Resonance Angiography (MRA) is a developing technology for the non-invasive evaluation of arterial and venous structures which does not require x-ray based catheter angiography. While dramatic progress in MRA has recently been made, there are still substantial limitations in the accuracy of MRA in grading stenoses and detecting small accessory vessels. The purpose of this study is to recruit patients with documented atherosclerotic disease as confirmed on catheter angiography performed at Suburban Hospital for evaluation with state-of-the-art MRA on MRI units, also at Suburban Hospital. We intend to test new surface coils, new pulse sequence designs, and advanced image processing algorithms in order to improve MRA accuracy to the point that a large-scale study of MRA vs. conventional angiography is possible. The goal of this pilot study is to improve MRA to the point that it can reliably replace diagnostic x-ray catheter angiography in the evaluation of patients with atherosclerotic disease.
Study design
- Primary purpose
- Treatment
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Magnetic resonance angiography | Procedure or surgery | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Mar 2008.
- Background: PubMed 8280977Prince MR, Yucel EK, Kaufman JA, Harrison DC, Geller SC. Dynamic gadolinium-enhanced three-dimensional abdominal MR arteriography. J Magn Reson Imaging. 1993 Nov-Dec;3(6):877-81. doi: 10.1002/jmri.1880030614.
- Background: PubMed 9494471Prince MR. Peripheral vascular MR angiography: the time has come. Radiology. 1998 Mar;206(3):592-3. doi: 10.1148/radiology.206.3.9494471. No abstract available.
- Background: PubMed 9560485Prince MR. Contrast-enhanced MR angiography: theory and optimization. Magn Reson Imaging Clin N Am. 1998 May;6(2):257-67.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Magnetic resonance angiography in people with Atherosclerosis, run by National Institutes of Health Clinical Center (CC) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001946, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Mar 2008.