Real-time imaging and triggering of 3D contrast-enhanced MR angiograms using MR fluoroscopy

Stephen J. Riederer, Sean B. Fain, David G. Kruger, Reed F. Busse

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Although a variety of timing techniques and data acquisition strategies have been used for three-dimensional contrast-enhanced MR angiography, many are still limited by inadequate overall reliability, limited spatial resolution, or complexity. A technique is presented in this work in which contrast arrival is detected in the targeted vasculature in real time using MR fluoroscopy. Upon detection the operator triggers a 3D MR angiographic acquisition which uses an elliptical centric view order. It is shown that the view order intrinsically provides a high degree of venous suppression which in turn allows acquisition times of 30 s or longer, permitting high spatial resolution. The reliability of fluoroscopic triggering in bolus detection is shown to be over 90%. The technique provides high quality contrast-enhanced MR angiograms for many vascular regions.

Original languageEnglish (US)
Pages (from-to)196-206
Number of pages11
JournalMagnetic Resonance Materials in Physics, Biology and Medicine
Issue number3
StatePublished - Aug 1999

ASJC Scopus subject areas

  • Biophysics
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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