| | |
Summary: MRI Slice Picturing 263
MRI Slice Picturing
Jiang Ni
Jun Chen
Ling Li
Tsinghua University
Beijing, China
Advisor: Jun Ye
Summary
We set up two coordinate systems, one in the object space and the other on
the computer screen. We introduce six parameters to describe the slice plane,
and we formulate the coordinate mapping from the screen to the object space.
We designed six alternative algorithms that use the given data to estimate
the density at any location in space and produce a slice of a three-dimensional
array. Some of the algorithms exploit global information and some are self-
adaptive; all but one have advantages in certain circumstances.
We extended a well-known two-dimensional model of a human head model
to build a three-dimensional model of a head, consisting of 10 ellipsoids of
different size, orientation, and density. We produced the data sets by sampling
in the object space (the head model) at evenly spaced intervals; the dimension
|
