Stress Adenosine Cardiac Magnetic Resonance (MR) Comparison With Single Photon Emission Computed Tomography (SPECT) Imaging

NCT00864591 | Unknown

• 1 other identifier: SHEBA-08-5654-OG-CTIL
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

This study is designed to determine the diagnostic value of adenosine cardiac magnetic resonance (CMR) when compared with SPECT. The investigators hypothesized that adenosine CMR could detect ischemia and is not inferior to SPECT imaging. In addition stress adenosine cardiac MRI offers a "one stop shop" enabling evaluation of cardiac function, rest and stress perfusion and viability.

Conditions

Coronary Artery Disease; Cardiac Perfusion

Keywords

SPECT Imaging; Stress adenosine CMR

Outcome Measures

Primary Outcomes (1)

• Stress adenosine cardiac MRIis not inferior to SPECT imaging in diagnosing myocardial ischemia

  1 year

Study Arms (1)

SPECT and stress CMR patients

patients undergoing SPECT stress imaging, for the evaluation of myocardial ischemia. The study group will include patients with either normal undergoing SPECT stress imaging or with mild to severe ischemia, to include the entire spectrum of coronary artery disease. Patients will be pre selected and evaluated by a non-dependent cardiologist in order to verify that patients in whom the repeat stress might pose a serious risk will be excluded from the study.

Procedure: SPECT Imaging; Procedure: Stress Adenosine CMR

Interventions

SPECT Imaging PROCEDURE

Myocardial SPECT imaging will be performed 10-12 minutes after the stress injection of Tl-201, at 4 hours, and at 18-24 hours in patients with non-reversible or partially reversible defect on 4-hour imaging. Images will be obtained with a rotating single- or dual-head gamma camera equipped with low-energy high resolution collimators. Energy windows of 20% and 10% will be centered on the 70 KeV and 167 KeV peaks of Tl-201, respectively. Thirty images will be obtained (40 seconds each for the stress and 4-hour redistribution imaging, and 60 seconds each for the 18-24-hour imaging) over 180° extending from the 45° right anterior oblique to the 45° left posterior oblique projections.Localization of the disease in the left anterior descending artery (LAD), left circumflex (Cx) and right coronary artery (RCA) will be performed using a quantitative analysis software.

SPECT and stress CMR patients

Stress Adenosine CMR PROCEDURE

CMR will be performed using a 3-T scanner and a dedicated eight-element cardiac phased-array coil Cine CMR will be performed using steady state free precession in the short-axis, two chamber, three chamber and four-chamber, 8 mm thick, separated by 0-mm gaps. Adenosine perfusion CMR: Adenosine will be administered intravenously at 140 µg/kg/min over 6 min. Four minutes into the infusion (or earlier if angina is provoked), a bolus (0.1 mmol/kg at 5 ml/s) of Gadolinium DTPA will be administered. Patients will be instructed to hold their breath. Stress perfusion images will be acquired in the short axis plane (parameters and planning will be similar for stress and rest perfusion evaluation). The patients will be monitored by vector ECG, noninvasive sphygmomanometry, pulse oximetry and capnography.

SPECT and stress CMR patients

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

patients undergoing SPECT stress imaging, for the evaluation of myocardial ischemia. The study group will include patients with either normal undergoing SPECT stress imaging or with mild to severe ischemia, to include the entire spectrum of coronary artery disease. Patients will be pre selected and evaluated by a non-dependent cardiologist in order to verify that patients in whom the repeat stress might pose a serious risk will be excluded from the study.

You may qualify if:

• Suspected ischemia referred to SPECT stress imaging

You may not qualify if:

• Standard contraindications to MRI including (pacemaker/defibrillator, metallic clips on brain aneurysms, metal fragment in the eye, etc...)
• Congestive heart failure.
• Hemodynamic instability.
• History of asthma or bronchospastic disease.
• Arrhythmia
• Creatinine \>1.4
• Non compliant patient, not able to lie supine in the MRI scanner for 1 hour.
• Pregnant patients
• Patients for whom the repeat stress might pose a significant risk.

Sponsors & Collaborators

• Sheba Medical Center: lead

Study Sites (1)

Chaim Sheba Medical Center

Tel Litwinsky, 52621, Israel

Location

MeSH Terms

Conditions

Coronary Artery Disease

Condition Hierarchy (Ancestors)

Coronary Disease; Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Arteriosclerosis; Arterial Occlusive Diseases; Vascular Diseases

Central Study Contacts

Orly Goitein, MD

CONTACT

+972 3 5302530; orly.goitein@sheba.health.gov.il

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER GOV

Study Record Dates

• First Submitted: March 4, 2009
• First Posted: March 18, 2009
• Study Start: April 1, 2009
• Primary Completion: April 1, 2010
• Study Completion: October 1, 2010
• Last Updated: March 18, 2009

Record last verified: 2009-03

Locations

IL (1)