Rest period duration of the coronary arteries: Implications for magnetic resonance coronary angiography

Guy Shechter, Jon R Resar, Elliot R. McVeigh

Research output: Contribution to journalArticle

Abstract

Magnetic resonance (MR) and computed tomography coronary imaging is susceptible to artifacts caused by motion of the heart. The presence of rest periods during the cardiac and respiratory cycles suggests that images free of motion artifacts could be acquired. In this paper, we studied the rest period (RP) duration of the coronary arteries during a cardiac contraction and a tidal respiratory cycle. We also studied whether three MR motion correction methods could be used to increase the respiratory RP duration. Free breathing x-ray coronary angiograms were acquired in ten patients. The three-dimensional (3D) structure of the coronary arteries was reconstructed from a biplane acquisition using stereo reconstruction methods. The 3D motion of the arterial model was then recovered using an automatic motion tracking algorithm. The motion field was then decomposed into separate cardiac and respiratory components using a cardiac respiratory parametric model. For the proximal-to-middle segments of the right coronary artery (RCA), a cardiac RP (

Original languageEnglish (US)
Pages (from-to)255-262
Number of pages8
JournalMedical Physics
Volume32
Issue number1
DOIs
StatePublished - Jan 2005

Fingerprint

Magnetic Resonance Angiography
Coronary Angiography
Coronary Vessels
Artifacts
Magnetic Resonance Spectroscopy
Angiography
Respiration
Tomography
X-Rays

Keywords

  • Heart
  • Motion artifacts
  • Respiration

ASJC Scopus subject areas

  • Biophysics

Cite this

Rest period duration of the coronary arteries : Implications for magnetic resonance coronary angiography. / Shechter, Guy; Resar, Jon R; McVeigh, Elliot R.

In: Medical Physics, Vol. 32, No. 1, 01.2005, p. 255-262.

Research output: Contribution to journalArticle

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