NMR imaging device


Application Number  00129256 Application Date  2000.09.28
Publication Number  1289920 Publication Date  2001.04.04
Priority Information   1999/9/28 JP 273880/99  
International
Classification
 A61B5/055;G01R33/565;G01N24/08  
Applicant(s) Name  Ge Yokogawa Medical Systems Ltd.  
Address    
Inventor(s) Name  Ikesaki Yoshikazu  
Patent Agency Code  72001 Patent Agent  luo peng
AbstractIn order to reduce ghost artifacts due to a Maxwell term phase error caused by a data acquisition read gradient, an n-th Maxwell term collection pulse MTCPn is appended before an inversion RF pulse RF180 for an n-th shot in an l-echo N-shot EPI pulse sequence. The n-th Maxwell term collection pulse MTCPn has a waveform whose time integral value is zero, and gives a bias phase error such that a Maxwell term phase error which is caused by a data acquisition read gradient and contained in data filling out a k-space smoothly varies from a 1<st> row to an N.l-th row in the direction of a phase encoding axis.