Magnetic resonance imaging method and system capable of measuring short T2 signal components

摘要

A novel spin echo method and system applies a slice-selecting gradient field to a biological body under medical examination located in a static field during which time a spin excitation pulse is also applied to the biological body. A refocusing pulse is applied to the biological body after the application of the slice-selecting gradient field. A rephasing gradient field having the same polarity as the slice-selecting gradient field is applied just after the application of the refocusing pulse. A spin echo signal induced in a slice of the biological body excited by the spin excitation pulse is acquired to obtain MR information of the excited slice. The method reduces echo time and minimizes loss in T2 signal component. A magnetic resonance imaging system for carrying out the method is also disclosed.