Method for correction of MRI motion artifacts and main field fluctuation

US6404196B1 · kind B1 · utility

Assignee

• CASE WESTERN RESERVE UNIVERSITY · US

Inventors

• Jeffrey L. Duerk · Avon Lake, US
• Michael Wendt · Erlangen, DE
• Ajit Shankaranaravanan · East Cleveland, US
• Yiu-Cho Chung · Chicago, US
• Jonathan S. Lewin · Atlanta, US
• Elmar M. Merkle · Basel, CH

Key dates

• Filing date: Apr 4, 2001
• Grant date: Jun 11, 2002
• Expiry date: Apr 4, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7257
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for correcting MRI motion artifacts and main field fluctuations. A series of data prints are acquired at read points along a radial axis to form a view (210). Subsequent views define a NMR data set. A processor stores the NMR data set and reconstructs an image array from a stored NMR data set by; a) reconstructing the NMR data set along a radial axis; b) producing a correction data array including correction values where each of the correction values is calculated as a function of the corresponding stored NMR datum and the stored NMR datum for the intersection of the first and subsequent projection (200) axes; c) applying the data in the correction array to the NMR data set to produce a final NMrR data set.