Study on a Fully Open Magnetic Resonance Imaging Device with a Slice Imaging Region

A new unilateral permanent magnet configuration for magnetic resonance imaging (MRI) system producing a slice imaging region with field homogeneity is presented. It is a totally new problem about magnet design to build a slice imaging region with homogeneous magnetic field outside the magnet source. A novel design method with high precision is proposed here to probe the existence possibility of such a remote slice region and then is used to analyze the location and size of the slice region. The success of such a unilateral permanent magnet with a slice region for MRI builds a strong basis for some scientific research such as the construction of the unilateral MRI system with homogeneous magnetic field.