METHOD AND APPARATUS FOR CORRECTING BL-INHOMOGENEITY IN SLICE-SELECTIVE MRI USING COMPOSITE RF PULSES

摘要

How to perform magnetic resonance imaging of the body is said to align the nuclear magnetization along the axis of the spindle, step of immersing the body in the static magnetic field; Slice of the nuclear spindle by performing selective exposing the body to excite the nuclear spindle flip of atoms contained in the slice of the body in the transverse direction of the high-frequency pulse and gradient pulse step; Detecting a signal emitted by the excited nuclei spindle; And based on the detected signal includes a step of reconstructing a magnetic resonance image of the slice of the body, the method, the basic high-frequency pulse is a rectangular pulse having a constant frequency that is designed to compensate for the frequency non-uniformity of the high frequency field in the body and approximately the equivalent of a slice train - is characterized in that the base constituted by a train of selective pulse ;