Magnetic resonance imaging apparatus

Details Magnetic resonance imaging apparatus Magnetic resonance imaging apparatus

2007-12-20

2009-06-02

Arana, Louis M (Department: 2831)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S306000

Reexamination Certificate

active

07541809

ABSTRACT:
A magnetic resonance imaging apparatus which executes an imaging sequence for obtaining, as imaging data, magnetic resonance signals each generated from a spin excited at a subject within a static magnetic field space and produces an image about the subject, based on the imaging data obtained by the execution of the imaging sequence, includes a scan section which executes the imaging sequence and executes, before the execution of the imaging sequence, a preparation sequence for transmitting preparation pulses to the subject in such a manner that signal intensities of the magnetic resonance signals differ according to the velocities of spins moved in the subject, wherein the scan section sequentially transmits, as the preparation pulses, a first RF pulse, a second RF pulse, a third RF pulse and a fourth RF pulse respectively to the subject, wherein the scan section transmits a first crusher gradient pulse constituted of a pair of gradient pulses to the subject in such a manner that a point of time at which an RF pulse is transmitted as the second RF pulse is interposed at a time base, wherein the scan section transmits a second crusher gradient pulse constituted of a pair of gradient pulses to the subject in such a manner that a point of time at which an RF pulse is transmitted as the third RF pulse is interposed at the time base, and wherein the scan section transmits a killer gradient pulse to the subject after the transmission of the fourth RF pulse.

REFERENCES:
patent: 5281916 (1994-01-01), Hinks et al.
patent: 5285158 (1994-02-01), Mistretta et al.
patent: 5548216 (1996-08-01), Dumoulin et al.
patent: 5729139 (1998-03-01), Goto
patent: 5786692 (1998-07-01), Maier et al.
patent: 5899858 (1999-05-01), Muthupillai et al.
patent: 6008647 (1999-12-01), Zhou et al.
patent: 6078176 (2000-06-01), McKinnon
patent: 6320377 (2001-11-01), Miyazaki et al.
patent: 6353752 (2002-03-01), Madore et al.
patent: 6438404 (2002-08-01), Van Den Brink et al.
patent: 6479995 (2002-11-01), Ogino
patent: 6614225 (2003-09-01), Feinberg
patent: 6782286 (2004-08-01), Miyazaki
patent: 6801800 (2004-10-01), Miyazaki
patent: 7058440 (2006-06-01), Heuscher et al.
patent: 7141972 (2006-11-01), Avram et al.
patent: 7176681 (2007-02-01), Zombo
patent: 2004/0059213 (2004-03-01), Kassai et al.
patent: 2004/0162483 (2004-08-01), Kimura
patent: 2000-005144 (2000-01-01), None
patent: 2002-200054 (2002-07-01), None
Nana et al., Ex vivo MR diffusion anisotropy measurement for the evaluation of gastric tissue fiber directions using 3D Turbo Steam sequence, Proceedings, International Society for Magnetic Resonance in Medicine, Jan. 1, 2006, p. 2227.
Yongbi et al., A Modified Sub-Second Fast-Steam Sequence Incorporating Bipolar Gradients for in Vivo Diffusion Imaging, Magnetic Resonance in Medicine, Academic Press, Jun. 1, 1996, pp. 911-916.
International Search Report, NL1034839, dated Dec. 16, 2008, pp. 12.

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