KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人:
CHOI, Joon-Sung,최준성,PARK, Hyun-Wook,박현욱
申请号：
KRKR2011/009921
公开号：
WO2013/094787A1
申请日:
2011.12.21
申请国别(地区):
WO
年份:
2013
代理人:
摘要：
The present invention relates to a magnetic resonance imaging method in a radial coordinate system, and provided is a technique for restoring a relatively accurate image by making use of an inter-coil sensitivity map together with MLEM technology rather than the FBP technique which has previously been used when obtaining an image by using PI data acquired by means of a radial coordinate system. The magnetic resonance imaging method in a radial coordinate system according to the present invention comprises the steps of: (a) acquiring a signal (g) obtained by radial sampling via parallel coils in a magnetic resonance imaging (MRI) device (b) individually subjecting a plurality of the sampled signals (g) to MRI image restoration by using sensitivity back projection (c) respectively calculating orthographically-projected signals from the restored images (f), and individually subjecting the orthographically-projected signals to image restoration (d) respectively computing maximum probability values by determining the conditional probabilities of the restored MRI images (f) and the sampled signals (g) of steps (b) and (c) (e) restoring an image by combining, into one, the MRI image (f) and the sampling signal (g) constituting the maximum probability values in step (d) and (f) repeatedly carrying out steps (b) and (e), and thereby establishing the image (f) that finally constitutes the maximum probability value as being the finally resulting restored image.La présente invention se rapporte à un procédé dimagerie par résonance magnétique dans un système de coordonnées radiales, et décrit une technique de restauration dune image relativement précise par le recours à une carte de sensibilité entre bobines conjointement avec une technologie MLEM plutôt que la technique FBP qui a déjà été utilisée lors de lobtention dune image en utilisant les données PI acquises par le biais dun système de coordonnées radiales. Le procédé dimagerie par résonance magnétique dans un système de c
