2D-RF-pulse-encoded curved-slice imaging.
A new approach to curved-slice imaging is described in which spatial resolution is achieved using 2D-RF-pulse- and conventional-frequency encoding. This approach offers the opportunity to image curved anatomical structures directly using curved single-slice MRI. A set of 2D-RF pulses is employed to excite transverse magnetization in an arbitrarily shaped curved-slice profile in three-dimensional space. Spatial resolution along the curved-slice direction is achieved by encoding the different volume elements of the slice using a set of specially designed RF pulses and an appropriate encoding scheme. The remaining spatial direction is measured using conventional-frequency encoding. Phantom and in vivo experiments were carried out to illustrate the basic feasibility and the limitations of this approach.
Börnert
Peter
P
Department Technical Systems, Philips Research, Röntgenstrasse 24-26, 22335 Hamburg, Germany. Peter.Boernert@Philips.com
D019412:Anatomy, Cross-Sectional / Q000379:methods*; D001921:Brain / Q000033:anatomy & histology*; D005240:Feasibility Studies; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D019047:Phantoms, Imaging; D011846:Radio Waves; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted