Improved ejection fraction and flow velocity estimates with use of view sharing and uniform repetition time excitation with fast cardiac techniques

Thomas K.F. Foo, Matt A. Bernstein, Alex M. Aisen, Ramiro J. Hernandez, Brace D. Collick, Tsur Bernstein

Research output: Contribution to journalArticle

174 Scopus citations


PURPOSE: To improve the accuracy of ventricular volume estimates and effective temporal resolution in fast cardiac acquisitions. MATERIALS AND METHODS: Data sets at intermediate temporal phases were generated by means of sharing of views from two temporally adjacent data sets. A simulated model was used, and studies with patients and volunteers were conducted. View sharing was implemented in both fast gradient-echo and fast phase-contrast cine acquisitions; breath holding was used when possible. RESULTS: Uniform repetition time (TR) radio-frequency (RF) excitation allowed a better assessment of the end-diastolic ventricular volume. In addition, view sharing provided a better estimate of end-systolic ventricular volume in cases in which rapid changes in volume occurred at or about the temporal boundary of the source images. View sharing also provided a much smoother representation of dynamic cardiac motion when viewed in a cine loop. CONCLUSION: View sharing and uniform TR RF excitation improve the accuracy of end-systolic and end-diastolic ventricular volume measurements by improving the effective temporal resolution.

Original languageEnglish (US)
Pages (from-to)471-478
Number of pages8
Issue number2
StatePublished - May 1995



  • Heart, volume
  • Magnetic resonance (MR), phase imaging
  • Magnetic resonance (MR), rapid imaging
  • Magnetic resonance (MR), volume measurement

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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