Title:
MAGNETIC RESONANCE DIAGNOSTIC SYSTEM
Document Type and Number:
Japanese Patent JP3519486
Kind Code:
B2
Abstract:
PURPOSE: To correct a phase error due to magnetic field change according to the fluctuation of a magnetostatic field. etc., and to reduce the aberration of state change information by acquiring state change distribution based on phase information before state change and that after the change of information corrected by the magnetic field change.
CONSTITUTION: A transmitter 17 supplies a high-frequency current to a high-frequency probe 16 to apply a high-frequency magnetic field to an examinee, and a receiver 18 receives a magnetic resonance signal from the examinee. While, a sequence controller 19 executes pulse sequence by controlling a gradient coil power source 13, a shin coil power source 15, the transmitter 17 and the receiver 18. A CPU/memory 20 finds the phase information before state change and that after state change based on the magnetic resonance signal, and observes the magnetic field change extending over before the state change to after the state change by the phase change of the magnetic resonance signal, and corrects the phase information after state change by the magnetic field change, and also, acquires the state change information based on the phase information before state change and corrected one after state change.
Inventors:
Ishihara, Yasutoshi
Application Number:
JP5564295A
Publication Date:
April 12, 2004
Filing Date:
March 15, 1995
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G01R33/48; A61B5/055; G01N33/48; (IPC1-7): A61B5/055; G01R33/48
Attorney, Agent or Firm:
鈴江 武彦