Mary Preston McDougall1,2, Steven M. Wright,
12, Ke Feng2, Edwin Eigenbrodt2, Chieh Wei Chang1,
Neal Hollingsworth2, John Bosshard2
1Biomedical Engineering, Texas A&M
University, College Station, TX, United States; 2Electrical and
Computer Engineering, Texas A&M University, College Station, TX, United
States
Curved
slice excitation has been used for imaging the spine and neck, cortical
surface of the brain, and other applications.
RF pulses for generating curved slices are typically 2D or 3D pulses,
and can be very time consuming. This
paper presents an approach which may be useful in certain applications, in
which an array coil, conformed to the surface of interest, generates the
slices using simple non-selective pulses.
Slice depth is controlled by pulse duration or power. Examples are shown using a straightforward
forced current approach using a single transmitter and a more general
approach using a 64 channel transmitter.