Computer Aided Analysis and Visualisation of Very High-frequency
Ultrasound Scans of the Human Cornea
The increasing popularity of refractive surgery, in the form of
photorefractive keratectomy (PRK) and laser in-situ keratomileusis
(LASIK), to modify the human cornea has led to a requirement for
detailed information on the 3-dimensional structure of individual
cornea layers. Such information may be gathered by very high-frequency
(VHF) ultrasound scanning. We describe the algorithms, features
and design of a software application for the functional analysis and
visualisation of VHF ultrasound data.
Bicubic Bezier patches are used in the reconstruction of the
surfaces of the cornea. Ray tracing techniques are applied in the
analysis of the thickness of the tissue layers which make up the
cornea. Both 2- and 3-dimensional representations of the results of
the analysis are generated and the application is packaged in a
graphical user interface enhancing ease of use for ophthalmologists
not necessarily trained in the use of computational technology.
A full version of this paper can be downloaded in gzipped postscript. If you wish to receive
a paper copy, please email me.
Matthew Segall (email@example.com)
Last modified: Mon Jun 26 16:32:13 2000