RAD-GRASE: A Novel Sequence for MR Imaging
- pdf version of the abstract

This talk will discuss a novel pulse sequence for MR imaging called RAD-GRASE. Gradient and Spin Echo (GRASE) imaging uses a combination of gradient and RF refocusing to produce a train of echoes. In standard 2D Fourier GRASE, contrast is selected and artifacts minimized by careful view ordering. Radial acquisition of data (RAD-) GRASE is an alternative to the 2D Fourier method. In RAD all lines of data pass through the origin in k-space and contribute more-or-less equally to the image contrast. It has been shown that T2 contrast can be varied in RAD sequences using a subset of the data near the origin in k-space. With RAD-GRASE both T2 and T2*- weighted contrast can be obtained from a single data set. Furthermore, images of fat and water content can also be obtained from the same data set when appropriate timing parameters are used.