System and method for MRI tagging spatial modulation of magnetization
A method of inducing tag lines in an MRI image is provided which allows adjustment of tag line width and spacing. The method includes determining a desired tag line width ( 505 ) and then selecting a parameter of a SINC modulating function, such as main lobe bandwidth, in accordance with the desired tag line width. The method also includes determining a desired tag line separation ( 51 ) and selecting a parameter of an ARF pulse train based upon the desired tag line separation. A gradiant field is applied to the specimen being imaged. The RF pulse train is modulated in accordance with the SINC modulating function ( 520 ) and the modulated RF pulse train is applied to the specimen being imaged prior to an image acquisition operation. In one embodiment of the invention, the gradiant is activated between pulses of the RF pulses.
Patent Number: US20050182314A1
Application Number: US2004973371A
Inventor: Wu, Ed | Tang, Haiying
Priority Date: 3 May 2002
Priority Number: US20050182314A1
Application Date: 26 Oct 2004
Publication Date: 18 Aug 2005
IPC Current: G01R0033563
US Class: 600410
Title: System and method for MRI tagging spatial modulation of magnetization
Usefulness: System and method for MRI tagging spatial modulation of magnetization
Summary: Used for inducing a tag line in an image of a magnetic resonance imaging (MRI) apparatus that is utilized for medical imaging.
Novelty: Image tag line inducing method for magnetic resonance imaging apparatus, involves determining desired tag line width and separation, where width and separation are altered independently by varying SINC function and RF pulse train
生物醫學
醫學影像
香港
