Self-Gated Cardiac Cine MRI

Andrew C. Larson, Richard D. White, Gerhard Laub, Elliot R. McVeigh, Debiao Li, Orlando P. Simonetti

Research output: Contribution to journalArticle

Abstract

The need for ECG gating presents many difficulties in cardiac magnetic resonance imaging (CMRI). Real-time imaging techniques eliminate the need for ECG gating in cine CMRI, but they cannot offer the spatial and temporal resolution provided by segmented acquisition techniques. Previous MR signal-based techniques have demonstrated an ability to provide cardiac gating information; however, these techniques result in decreased imaging efficiency. The purpose of this work was to develop a new "self-gated" (SG) acquisition technique that eliminates these efficiency deficits by extracting the motion synchronization signal directly from the same MR signals used for image reconstruction. Three separate strategies are proposed for deriving the SG signal from data acquired using radial k-space sampling: echo peak magnitude, kymogram, and 2D correlation. The SG techniques were performed on seven normal volunteers. A comparison of the results showed that they provided cine image series with no significant differences in image quality compared to that obtained with conventional ECG gating techniques. SG techniques represent an important practical advance in clinical MRI because they enable the acquisition of high temporal and spatial resolution cardiac cine images without the need for ECG gating and with no loss in imaging efficiency.

Original languageEnglish (US)
Pages (from-to)93-102
Number of pages10
JournalMagnetic Resonance in Medicine
Volume51
Issue number1
DOIs
StatePublished - Jan 2004
Externally publishedYes

Keywords

  • Cardiac
  • Cine
  • CMRI
  • Gating
  • Triggering

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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  • Cite this

    Larson, A. C., White, R. D., Laub, G., McVeigh, E. R., Li, D., & Simonetti, O. P. (2004). Self-Gated Cardiac Cine MRI. Magnetic Resonance in Medicine, 51(1), 93-102. https://doi.org/10.1002/mrm.10664