One-shot velocimetry using echo planar imaging microscopy

Song I. Han; Paul T. Callaghan

doi:10.1006/jmre.2000.2240

One-shot velocimetry using echo planar imaging microscopy

Song I. Han^*, Paul T. Callaghan

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A rapid version of PEPI (π-echo planar imaging) velocimetry has been implemented, enabling a velocity image, at microscopic resolution, to be acquired in less than 1 s. The velocity map was reconstructed using the phase information from the ratio of two PEPI images, one obtained with a velocity-encoding filter applied prior to the imaging sequence and the other image without. The acquisition time for each image was about 80 ms and the two complete image acquisitions were acquired in one shot in 500 ms. This rapid velocimetry sequence gave a good representation of laminar pipe flow. It has also been used to examine extensional flow in a biaxial extension in which the transient extension takes about 3 s.

Original language	English (US)
Pages (from-to)	349-354
Number of pages	6
Journal	Journal of Magnetic Resonance
Volume	148
Issue number	2
DOIs	https://doi.org/10.1006/jmre.2000.2240
State	Published - Feb 2001

Funding

SH is a Ph.D. student of Professor Bernhard Blümich and this work was carried out during a 3-month visit by SH to the laboratory of PTC. We are grateful to Professor Blümich for providing the opportunity for this visit and funding support. PTC acknowledges funding support from the New Zealand Foundation for Research, Science, and Technology.

ASJC Scopus subject areas

Condensed Matter Physics
Nuclear and High Energy Physics
Biophysics
Biochemistry

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10.1006/jmre.2000.2240

Cite this

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abstract = "A rapid version of PEPI (π-echo planar imaging) velocimetry has been implemented, enabling a velocity image, at microscopic resolution, to be acquired in less than 1 s. The velocity map was reconstructed using the phase information from the ratio of two PEPI images, one obtained with a velocity-encoding filter applied prior to the imaging sequence and the other image without. The acquisition time for each image was about 80 ms and the two complete image acquisitions were acquired in one shot in 500 ms. This rapid velocimetry sequence gave a good representation of laminar pipe flow. It has also been used to examine extensional flow in a biaxial extension in which the transient extension takes about 3 s.",

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One-shot velocimetry using echo planar imaging microscopy

Abstract

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ASJC Scopus subject areas

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