Thorax: Low-dose contrast-enhanced three-dimensional MR angiography with subsecond temporal resolution - Initial results

J. Paul Finn*, Visveshwar Baskaran, James C. Carr, Richard M. McCarthy, F. Scott Pereles, Randall Kroeker, Gerhard A. Laub

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

The purpose of the study was to implement a three-dimensional (3D) magnetic resonance (MR) angiographic technique with acquisition times on the order of 800 msec with use of a spoiled gradient-echo pulse sequence (repetition time, 1.60 msec; echo time, 0.65 msec) and bolus intravenous injection of contrast material doses as small as 6 mL. High-spatial-resolution conventional MR angiography performed with 30 mL of gadopentetate dimeglumine was the reference standard. As implemented, subsecond 3D MR angiography allowed temporal sampling that was rapid enough to depict short-lived processes, as illustrated in patients with shunts and dissections. With small contrast material doses and subsecond frame rates, it is also possible to measure pulmonary arteriovenous circulation times with this 3D MR angiographic technique.

Original languageEnglish (US)
Pages (from-to)896-904
Number of pages9
JournalRadiology
Volume224
Issue number3
DOIs
StatePublished - Sep 2002

Keywords

  • Magnetic resonance (MR), rapid imaging
  • Magnetic resonance (MR), vascular studies

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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