Method to determine the ADC coefficients in...

Details Method to determine the ADC coefficients in... Method to determine the ADC coefficients in...

2005-05-10

2005-05-10

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S307000

Reexamination Certificate

active

06891373

ABSTRACT:
In a magnetic resonance apparatus and method to acquire a diffusion-weighted image in diffusion-weighted MRT imaging, a non-diffusion-weighted data set and a diffusion-weighted data set are measured and stored by means of a DESS sequence (Double Echo Steady State Sequence), with two readout gradients being switched successively for the non-diffusion-weighted data set, and a bipolar diffusion gradient pulse sequence being switched between two readout gradients for the diffusion-weighted data set. A diffusion-weighted MRT image is calculated is calculated based on the non-diffusion-weighted data set and the diffusion-weighted data set, as well as on the basis of a value characterizing the diffusion-weighted measurement.

REFERENCES:
patent: 5833609 (1998-11-01), Dannels et al.
patent: 6670812 (2003-12-01), Mock et al.
“The Diffusion Sensitivity of Fast Steady-State Free Precession Imaging,” Buxton, Magnetic Resonance in Medicine, vol. 29, (1993) pp. 225-243.
“A New Diffusion SSFP Imaging Technique,” Zur et al., Magnetic Resonance in Medicine, vol. 37 (1997) pp. 716-722.
“High Resolution Renal Diffusion Imaging Using a Modified Steady-State Free Precession Sequence,” Ding et al., Magnetic Resonance in Medicine, vol. 34 (1995) pp. 596-595.
“NMR Diffusion Coefficient Mapping by Use of Fast Steady-State Free Precession Sequence,” Chu et al., Proc. Society of Magnetic Resonance in Medicine, Amsterdam (1989) p. 911.

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