Method for magnetic resonance imaging and related apparatus

A method for obtaining images of a subject by nuclear magnetic resonance imaging, comprising the steps of:

• providing a static magnetic field within which said subject is disposed, a source of pulsed RF signals, receiver means for receiving signals from said subject, computer means for receiving said signals from said receiver means and establishing image information related thereto and visual display means for displaying images from said image information;
• performing a plurality of first image generating sequences each including generating an initial RF pulse which is a 90.degree. pulse while substantially simultaneously applying a first slice selection gradient pulse, and subsequently applying a first phase-encoding gradient pulse, and subsequently applying a first preparation gradient pulse, and generating a refocusing RF pulse which is a 180.degree. pulse, and substantially simultaneously applying a first read-out gradient pulse, while simultaneously receiving a first set of NRM signals produced responsively by said subject in said receiver means;
• processing said first set of NMR signals by said computer means to obtain a first set of image
• storing said third set of image information in said computer means.

An apparatus for obtaining corrected images of a subject using nuclear magnetic resonance imaging comprising:

• means for generating a static magnetic field;
• means for generating a plurality of RF pulses and for directing said pulses into said subject to produce NMR signals in said subject;
• means for generating a plurality of sequences of magnetic field gradients having means for controlling the orientation, magnitude and direction of said gradients, said means also having means for applying said gradients while a first set of NMR signals is being produced for each sequence generated;
• receiver means for receiving said NMR signals and generating output signals representative of said NMR signals;
• and
• computer means for processing said output signals to generate image information from one set of NMR signals comprising a first image and image information from another set of NMR signals comprising a second image, whereby image information at a first point in said first image is combined with image information at a second, remote point in said second image to obtain image information for at third point in said corrected image.