Volterra series modelling and compensation of non-linear distortions caused by susceptibility difference artefacts related to the presence of ferromagnetic implants in magnetic resonance imaging.

摘要: Magnetic resonance imaging is popular in medical settings due to its unique technical characteristics. However, full potential has been limited by artefacts caused various phenomena. Previously, a methodology was proposed characterize and reduce specifically magnetic susceptibility differences. In the present work, Volterra series approach suggested as an alternative method for describing non-linear distortions induced artefacts. A second-order utilized characterizing image non-linearities using block-by-block processing approach. Subsequently, corresponding inverse applied compensate quantified distortions. addition, technique automatic demarcation of recoverable non-recoverable regions images ameliorate developed methodology. Experimental results indicate that this offers improved accuracy flexibility reducing