Computed Tomography (CT)--An Epidemiologic Study in the Young

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: NCT00005354
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : March 27, 2014
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by:
University of Iowa

Brief Summary:
To investigate the relationship between coronary heart disease risk factors and coronary artery calcification in middle age adults from the Muscatine Study. From 1992 through 1995, ultrafast computed tomography was used to measure coronary artery calcification. The study has been extended through January, 2001 in order to examine the role of electron beam computed tomography in detecting the presence and quantity of coronary artery calcification, a marker of the atherosclerotic process.

Condition or disease
Cardiovascular Diseases Coronary Disease Atherosclerosis Heart Diseases

Detailed Description:


Atherosclerotic heart disease, a major cause of mortality and morbidity in the United States, has been shown to have its origins in childhood. Deposition of calcium occurring early in the atheromatous process is often observed in postmortem studies of coronary arteries and the aorta. Ultrafast computed tomography (Fast-CT) provides a highly sensitive, non-invasive technique for detecting the presence and quantity of coronary artery calcification (CAC). The 'risk factors' for coronary artery disease have been determined by measuring levels of potential factors in middle-and older-aged adults and determining which predict atherosclerotic cardiovascular disease, including coronary artery disease (CAD), peripheral vascular disease, and cerebrovascular disease. Adult subjects with CAC have a greater number of coronary risk factors, including higher cholesterols. In the age group of 30-39 years, 30 to 40 percent have radiographic evidence of coronary artery or aortic calcification. In the Muscatine Study, the investigators examined coronary risk factors in 2400 subjects during childhood (ages 9-11 years) and again in young adult life (ages 20 to 30 years). This population can now provide important information related to measures of childhood and young adult coronary risk factors predicting the development of the atherosclerotic process in adults in their fourth decade of life.


Beginning in 1992, the longitudinal study used the non-invasive technique of ultrafast computed tomography to examine the relationship of known coronary risk factors measured in childhood and again in early adult life in order to correlate their association with coronary artery calcification. Risk factors included lipids, lipoproteins, apolipoproteins, lipoprotein(a), apo(a) genotypes, homocyst(e)ine, and left ventricular mass. Beginning in February 1996, electron beam computed tomography is used to associate risk factors with coronary artery calcification.

Study Type : Observational
Study Start Date : April 1992
Actual Primary Completion Date : May 2007
Actual Study Completion Date : May 2007

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
No eligibility criteria

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): NCT00005354

Sponsors and Collaborators
University of Iowa
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Larry Mahoney University of Iowa