Protocol Number: 97-H-0204

Title:

Cardiovascular Magnetic Resonance Imaging

Number:

97-H-0204

Summary:

This study is directed at evaluating patients with "myocardial ischemia" or poor blood supply to the heart muscle due to coronary artery disease. The major objective of this study is to determine the level of safety and effectiveness of magnetic resonance imaging at diagnosing coronary artery disease.

In addition, this study will allow researchers at the National Institutes of Health to see a broad spectrum of disease, preserve clinical skills, and stimulate future ideas for clinical research.

Sponsoring Institute:

National Heart, Lung and Blood Institute (NHLBI)

Recruitment Detail

Type: Participants currently recruited/enrolled

Gender: Male & Female

Referral Letter Required: No

Population Exclusion(s): Children

Eligibility Criteria:

INCLUSION CRITERIA:

Inclusion Criteria for All Arms of the Protocol

1. Known or suspected cardiovascular disease.

2. 18 years of age and older.

3. Able to provide informed consent.

Exclusion Criteria for All Arms of the Protocol:

Patients with a contraindication to MRI scanning will be excluded. These contraindications include patients with the following devices:

1. Central nervous system aneurysm clips

2. Implanted neural stimulator

3. Implanted cardiac pacemaker or defibrillator

4. Cochlear implant

5. Ocular foreign body (e.g. metal shavings)

6. Implanted insulin pump

7. Metal shrapnel or bullet.

In addition the following patient groups will be excluded:

1. Pregnant women (Patients who are uncertain as to whether they are pregnant will be required to have a screening urine or blood pregnancy test)

2. Patients with symptoms of myocardial ischemia occurring despite maximally tolerated doses of oral antianginal therapy and intravenous nitroglycerin

Furthermore, the following patient groups will be excluded from studies involving the administration of MRI contrast agents:

1. lactating women unless they are willing to discard breast milk for 24 hours

2. renal disease (estimated glomerular filtration rate [eGFR] less than 30 ml/min/1.73 m(2) body surface area)

The eGFR will be used to estimate renal function if reported by the laboratory. Otherwise, estimated glomerular filtration rate (eGFR) can be based on the Modification of Diet in Renal Disease (MDRD) study equation (see below) in subjects with stable renal function. This formula is not applicable to patients with acute renal insufficiency:

eGFR (ml/min/l.73 m(2))= 175 x (serum creatinine)-l.l54 x (age)-0.203 x 0.742 (if the subject is female) x 1.212 (if the subject is black)

Additional Exclusion Criteria for Dobutamine MRI

1. Myocardial infarction within 48 hours.

2. Uncontrolled heart failure

3. Severe hypertension (SBP greater than 200, DBP greater than 110)

4. Atrial fibrillation

5. Ventricular tachycardia

6. Frequent PVC's (more than 1 every 10 heart beats or nonsustained ventricular tachycardia (greater than 4)

7. Patients with narrow angle glaucoma or known or suspected severe bladder outlet obstruction due to prostatic hypertrophy will not receive atropine

Additional Exclusion Criteria for Vasodilator Stress MRI

1. Myocardial infarction within 48 hours.

2. Patients that are not considered medically stable by their physician (for example, severe heart failure that makes it difficult to breathe while lying flat or severe problems with heart rhythms).

3. Patients with 2nd or 3rd degree heart block are excluded from receiving the medicine adenosine (abnormalities that can be seen on your ECG).

Special Instructions:

The following items may be hazardous: cardiac pacemaker or autodefibrillator, aneurysm clip, neural stimulator (e.g. TENS-Unit), any type of ear implant, metal in your eye (e.g. from machining metal), any implanted device (e.g. insulin pump, drug infusion device), or any metallic foreign body, shrapnel, or bullet.

Keywords:

Echocardiography

Heart

Gadolinium

Dobutamine

Toxicity

Adverse Events

Myocardial Infarction

Myocardial Viability

Myocardial Perfusion

Myocardial Function

Recruitment Keyword(s):

Cardiovascular Disease

Condition(s):

Heart Disease

Investigational Drug(s):

None

Investigational Device(s):

None

Intervention(s):

None

Supporting Site:

National Heart, Lung and Blood Institute

Contact(s):

Patient Recruitment and Public Liaison Office
Building 61
10 Cloister Court
Bethesda, Maryland 20892-4754
Toll Free: 1-800-411-1222
TTY: 301-594-9774 (local),1-866-411-1010 (toll free)
Fax: 301-480-9793

Electronic Mail:prpl@mail.cc.nih.gov

Citation(s):

Measurement of relative cerebral blood volume changes with visual stimulation by 'double-dose' gadopentate-dimeglumine-enhanced dynamic magnetic resonance imaging

Brain mapping with functional MRI imaging: comparison of gradient-echo-based exogenous and endogenous contrast techniques

Tolerance data of Gd-DTPA: a review

• Questions about participating in a study, please contact the Patient Recruitment and Public Liaison Office, CC.
• Technical questions regarding the Clinical Center web site, please contact the Department of Clinical Research Informatics, CC.

Search The Studies | Help | Questions |
Clinical Center Home | NIH Home

National Institutes of Health Clinical Center Bethesda, Maryland 20892. Last update: 01/30/2009