Title:
INSPECTION METHOD USING NUCLEAR MAGNETIC RESONANCE
Document Type and Number:
Japanese Patent JP3524614
Kind Code:
B2
Abstract:
PURPOSE: To provide an inspection method capable of applying a fast measuring method to a three-dimensional image and using nuclear magnetic resonance.
CONSTITUTION: A slice gradient magnetic field 102 and an excited high-frequency pulse 101 are applied to an object to be inspected simultaneously. and a prescribed area is excited. Following that, a phase encode gradient magnetic field Gs 103 is applied, and position information is attached on a nuclear magnetic resonance signal 107. Thence, a phase encode gradient magnetic field Gs 104, a phase encode gradient magnetic field Gs 105 and simultaneously a readout gradient magnetic field Gr 106 to invert polarity are applied, and the nuclear magnetic resonance signal 107 (plural echo signals) is read out. The phase encode gradient magnetic field Gs 104 with inverse code and same size is applied in odd-numbered times of inversion and even-numbered times of inversion, and a signal including two kinds of position information in a slice direction is measured in one time of excitation. In this way, no blurring in the slice direction and on a slice surface occurs.
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Inventors:
Onodera, Yukari
Yamamoto, Etsuji
Yamamoto, Etsuji
Application Number:
JP3331595A
Publication Date:
May 10, 2004
Filing Date:
February 22, 1995
Export Citation:
Assignee:
HITACHI LTD
HITACHI MEDICAL CORP
HITACHI MEDICAL CORP
International Classes:
G01R33/48; A61B5/055; (IPC1-7): A61B5/055; G01R33/48
Attorney, Agent or Firm:
作田 康夫 （外１名）