Method and apparatus for high speed three dimensional nuclear ma

Details Method and apparatus for high speed three dimensional nuclear ma Method and apparatus for high speed three dimensional nuclear ma

1995-09-01

1997-07-29

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

1286532, G01R 3354, A61B 5055

Patent

active

056525150

ABSTRACT:
A nuclear magnetic resonance imaging scheme suitable for three dimensional physiological function imaging such as brain function imaging. In this scheme, the pulse sequence is controlled to realize a three dimensional imaging sequence with a division scan in at least one of a first encoding direction and a second encoding direction. In other words, the pulse sequence is controlled to realize a three dimensional imaging sequence with first encoding gradient field pulses and second encoding gradient field pulses for defining regular sampling pitches in first and second encoding directions, where at least one of the first encoding gradient field pulses and the second encoding gradient field pulses has a lead-in pulse in regularly changing magnitude for each spin excitation.

REFERENCES:
patent: 5497773 (1996-03-01), Kuhara et al.
Ogawa et al., "Oxygenation-Sensitive Contrast in Magnetic Resonance Image of Rodent Brain at High Magnetic Fields", Magnetic Resonance in Medicine 14, 68-78, 1990.
Weisskoff et al., "MRI Susceptometry: Image-Based Measurement of Absolute Susceptibility of MR Contrast Agents and Human Blood", Magnetic Resonance in Medicine 24, 375-383, 1992.

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