Patent ID: 6466016
Filing Date: 2002-10-15
Classification: G01R

Abstract:
A phase correction method comprising the steps of:lowpass filtering an image obtaind by magnetic resonance imaging; detecting a range of pixel positions defined by values â€œeâ€  at one end and â€œEâ€  at another end, wherein signal&it;â€ƒ&it;intensity&it;â€ƒ&it;after&it;â€ƒ&it;filteringsignal&it;â€ƒ&it;intensity&it;â€ƒ&it;before&it;â€ƒ&it;filtering&leq;e&it;â€ƒ&it;andsignal&it;â€ƒ&it;intensity&it;â€ƒ&it;before&it;â€ƒ&it;filteringsignal&it;â€ƒ&it;intensity&it;â€ƒ&it;after&it;â€ƒ&it;filtering&GreaterEqual;Eso as to provide a range of detected pixel positions;calculating a phase distribution based on the image before said lowpass filtering or the image after said lowpass filtering excluding pixel data within said range of detected pixel positions so as to provide a calculated phase distribution; obtaining a compensated phase distribution by estimating the phase at said excluded range of detected pixel positions in said calculated phase distribution from the phase at neighboring pixel positions; and performing phase correction of the image using said compensated phase distribution.