Study of Perfusion and Anatomy's Role in Coronary Artery (CAD) (SPARC)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00321399
Recruitment Status : Completed
First Posted : May 3, 2006
Last Update Posted : July 16, 2014
Information provided by (Responsible Party):
Marcelo F. Di Carli, MD, FACC, Brigham and Women's Hospital

Brief Summary:

Three main clinical outcomes will be assessed:

  1. Post-test resource utilization as assessed by referral rate to catheterization within 90-days of the index study;
  2. Incremental prognostic value and risk stratification for predicting cardiac death and myocardial infarction;
  3. Cost-effectiveness

To this end, SPARC is organized with two distinct specific objectives with important differences in patient population and endpoints.

Specific Aim 1: To evaluate the impact of stress perfusion imaging with SPECT or PET, CT Angiography, and hybrid PET-CT on post-test resource utilization.

The primary endpoint of specific aim 1 is to compare the impact of combined myocardial perfusion-coronary anatomy data to that of perfusion only [stress SPECT, stress cardiac PET (without CTA)] and anatomy only (CTA alone) on post-test resource utilization, as measured by referral to cardiac catheterization within 90 days of index noninvasive testing, in patients without CAD.

Secondary endpoints:

  1. to compare the diagnostic accuracy for detection of epicardial CAD of stress PET and hybrid PET-CT, stress SPECT, and CTA, as defined by coronary angiography;
  2. to compare the referral rate to revascularization within 90 days of cardiac catheterization.

Specific Aim 2: To compare the incremental prognostic value and risk stratification of stress perfusion imaging with SPECT or PET, CT coronary angiography, and combined perfusion-anatomy imaging approaches.

The primary endpoint of specific aim 2 is to compare the incremental value of stress perfusion only (stress PET and stress SPECT), coronary anatomy only (CTA data), and combined perfusion-anatomy studies (PET+CTA and SPECT+CTA) over clinical, historical and stress test data for the prediction of cardiac death and nonfatal myocardial infarction.

Secondary endpoints:

  1. to compare the incremental value of these noninvasive imaging approaches over clinical, historical and stress test data for the prediction of a composite endpoint including cardiac death, nonfatal myocardial infarction, late (>6 month from index study) referral to revascularization, or late (>6 month from index study) hospitalization for chest pain or heart failure;
  2. to compare the incremental value of these noninvasive imaging approaches over clinical, historical and stress test data for the prediction of all cause mortality. In addition, the ability of these modalities -together and separately- to risk stratify patients is a primary goal of specific aim 2.

Condition or disease
Known CAD, or Intermediate-high Pretest Likelihood for CAD

Study Type : Observational
Actual Enrollment : 3019 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: SPARC, Including Its Pilot CT Angiographic Study, is a Prospective, Open-label, Multicenter, Sequentially Sampled, Observational Registry to Define the Clinical Value of Stress Perfusion (Stress SPECT, Stress PET), Noninvasive Angiography (CTA) and Combined Perfusion-anatomy (PET/CT) Studies in Patients With Known or Suspected CAD With Respect to Post-test Resource Utilization and Prediction of Cardiac Death and Non-fatal Myocardial Infarction
Study Start Date : June 2006
Actual Primary Completion Date : March 2010
Actual Study Completion Date : July 2014

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Anatomy

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with known coronary artery disease and patients with suspected CAD and an intermediate-High Likelihood of disease

Inclusion Criteria:

  • Referred for a clinical stress SPECT, stress PET, CTA or PET-CT study
  • Intermediate to high pretest likelihood for CAD (>.25;as defined by ACC/AHA Stable Angina Guidelines) without prior MI/PCI/CABG. These are considered diagnostic patients.


  • Documented known CAD as defined by prior MI/PCI/CABG
  • Provide signed informed consent to participate in the study

Exclusion Criteria:

  • Low pretest likelihood for CAD (<=.25; as defined by ACC/AHA Stable Angina Guidelines).
  • Major concomitant noncardiac disease or social condition/situation that in the opinion of the investigator will preclude the patient from participation in the study follow-up.
  • Concurrent or prior(within last 30 days) participation in other research studies using investigational drugs or devices.
  • Presence of a permanent automated internal cardiac defibrillator (AICD)
  • Known non-ischemic cardiomyopathy
  • Chest pain at rest within 48 hours prior to the index noninvasive imaging test

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00321399

  Hide Study Locations
United States, Alabama
Cardiovascular Associates
Birmingham, Alabama, United States, 35213
University of Alabama at Birmingham
Birmingham, Alabama, United States, 35294
The Heart Center
Huntsville, Alabama, United States, 35801
United States, Arizona
Scottsdale Medical Imaging
Scottsdale, Arizona, United States, 85252
United States, California
Scripps Center for Integrative Medicine
La Jolla, California, United States, 92037
Cedars-Sinai Medical Center
Los Angeles, California, United States, 90048
University of California Irvine Medical Center
Orange, California, United States, 92868
Los Angeles Biomedical Research Inst.
Torrance, California, United States, 90502
United States, Connecticut
Hartford Hospital
Hartford, Connecticut, United States, 06102
Yale - New Haven VA Hospital
New Haven, Connecticut, United States, 06520
Cardiac Specialists
Trumbull, Connecticut, United States, 06611
United States, District of Columbia
Washington Hospital Center
Washington, District of Columbia, United States, 20010
United States, Florida
University of Florida - Jacksonville
Jacksonville, Florida, United States, 32209
United States, Georgia
Emory Crawford Long Hospital
Atlanta, Georgia, United States, 30308
Fugua Heart Center - Piedmont Hospital
Atlanta, Georgia, United States, 30309
United States, Illinois
University of Chicago
Chicago, Illinois, United States, 60637
United States, Maryland
Sinai Hosptial of Baltimore
Baltimore, Maryland, United States, 21215
United States, Massachusetts
Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
Brigham and Women's Hosptial
Boston, Massachusetts, United States, 02115
Lahey Clinic
Burlington, Massachusetts, United States, 01805
United States, Michigan
University of Michigan
Ann Arbor, Michigan, United States, 48109
United States, Minnesota
Minneapolis Heart Inst.
Minneapolis, Minnesota, United States, 55407
Mayo Clinic
Rochester, Minnesota, United States, 55902
United States, New Jersey
Holy Name Hospital
Teaneck, New Jersey, United States, 07666
United States, New York
Montefiore Medical Center
Bronx, New York, United States, 10461
North Shore University Hospital
Manhasset, New York, United States, 11030
NYU Medical Center
New York, New York, United States, 10016
Mount Sinai Medical Center
New York, New York, United States, 10029
Columbia University Medical Center
New York, New York, United States, 10032
St. Francis Hospital - The Heart Center
Roslyn, New York, United States, 11576
United States, North Carolina
Duke University Medical Center
Durham, North Carolina, United States, 27710
United States, North Dakota
Meritcare Hospital
Fargo, North Dakota, United States, 58122
United States, Ohio
Cleveland Clinic Foundation
Cleveland, Ohio, United States, 44145
Ohio State University Medical Center
Columbus, Ohio, United States, 43210
United States, Oklahoma
Oklahoma Foundation for Cardiovascular Research
Oklahoma City, Oklahoma, United States, 73120
United States, Rhode Island
Rhode Island Hospital
Providence, Rhode Island, United States, 02903
United States, South Carolina
Medical University of South Carolina
Charleston, South Carolina, United States, 29425
United States, Tennessee
Tennessee Heart and Vascular Inst.
Hendersonville, Tennessee, United States, 37075
United States, Washington
University of Washington Cardiology & Nuclear Medicine
Seattle, Washington, United States, 98195
United States, Wisconsin
Wisconsin Heart Hospital
Milwaukee, Wisconsin, United States, 53226
Canada, Ontario
University of Ottawa Heart Institute
Ottawa, Ontario, Canada, K1Y4E9
Sponsors and Collaborators
Brigham and Women's Hospital
Principal Investigator: Marcelo F Di Carli, MD FACC Brigham and Women's Hospital
Principal Investigator: Rory Hachamovitch, MD Msc FACC University of Southern California

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Marcelo F. Di Carli, MD, FACC, Chief, Division of Nuclear Medicine, Brigham and Women's Hospital Identifier: NCT00321399     History of Changes
Obsolete Identifiers: NCT00575289
Other Study ID Numbers: SPARC
First Posted: May 3, 2006    Key Record Dates
Last Update Posted: July 16, 2014
Last Verified: July 2014

Keywords provided by Marcelo F. Di Carli, MD, FACC, Brigham and Women's Hospital:
Coronary Artery Disease