Multidetector-row computed tomography to detect coronary artery disease: The importance of heart rate

Research output: Contribution to journalReview article

Abstract

Atherosclerosis resulting in coronary heart disease is a potentially preventable cause of death. Early non-invasive detection of unstable plaques in the coronary arteries may identify patients at risk for myocardial infarction, who can be aggressively treated to prevent cardiac events. The recent development of high-resolution 64-row CT scanners allows non-invasive high-quality visualization of ≥90% of the segments of coronary arteries within a few seconds. In addition, calcified, fibrous, and lipid-laden plaques can be differentiated. Strategies to optimize multidetector-row computed tomography (MDCT) imaging include careful choice of the reconstruction time point in the cardiac cycle, optimum contrast enhancement, and control of heart rate. When heart rate is >65 b.p.m., motion artifacts may compromise image quality. Thus, use of beta-blockers is recommended to control heart rate. Heart rate may also be slower and more consistent when a non-ionic, dimeric, iso-osmolar contrast medium (CM) rather than a hyper-osmolar ionic CM is used for image enhancement. When properly performed, advantages of MDCT for assessing coronary arteries include speed, information on the composition of atherosclerotic plaques, and no need for arterial access or hospitalization. Moreover, unlike angiography, MDCT can assess multiple potential causes of chest pain (heart attack, pulmonary embolism, aortic dissection) simultaneously.

Original languageEnglish (US)
Pages (from-to)G4-G12
JournalEuropean Heart Journal, Supplement
Volume7
Issue numberG
DOIs
StatePublished - Aug 1 2005

Keywords

  • Beta-blocker
  • CT angiography
  • Contrast media
  • Coronary artery disease
  • Diagnosis
  • Heart rate
  • MDCT
  • Osmolality

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Multidetector-row computed tomography to detect coronary artery disease: The importance of heart rate'. Together they form a unique fingerprint.

  • Cite this