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Proceedings Paper

3-D Image Processing In Functional Stereotactic Neurosurgery
Author(s): G. Garibotto; c. Giorgi; U. Cerchiari
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Paper Abstract

The possibility of analyzing neuroanatomical images (such as in computerized tomography) in a three dimensional form represents a significant improvement in diagnostic accuracy over conventional analysis of 2-D images. Expecially when the task consists in finding correspondences and/or differences between different measures of the same organ, only a 3-D comparison allows reliable results avoiding misregistration errors. In the paper we refer an example of 3-D analysis and representation of cerebral structures in functional stereotactic neurosurgery. This problem is briefly introduced in section 1, with reference to the state of the art and future trends of the medical research. Digital image processing techniques are used to obtain a 3-D description of some diencephalic structures, primarily involved in stereotactic neurosurgery. The input data consist in parallel sections of suitably stained brain slices which are displayed in a stereotactic atlas 11] . The 3-D reconstruction has been accomplished in different steps : at first the contour lines of the cerebral structures have been digitized as a 1-D description of the cerebral structures. Then a contour filling procedure has been implemented to collect these elements in a finite number of regions,labelled by fixed amplitude values (easy discrimination using pseudocolor display).Due to the non-uniform spacing of the atlas sections, three-dimensional interpolation has been performed on such 2-D images. These processing techniques are described in section 2, with examples of application on actual stereotactic data. The main advantage of dealing with neuroanatomical data in 3-D form is the possibility to verify any probe trajector that does not lie in the atlas planes, which is usually the case. Very simple techniques have been developed to evaluate arbitrarily slant sections of the volume as well as to obtain approximate 3-D assonometric display, using standard minicomputer [21 . A brief discussion on these solution is referred in section 3.

Paper Details

Date Published: 26 October 1983
PDF: 8 pages
Proc. SPIE 0397, Applications of Digital Image Processing V, (26 October 1983); doi: 10.1117/12.935312
Show Author Affiliations
G. Garibotto, 3M Italia Ricerche S.p.A. (Italy)
c. Giorgi, Division of Neurosurgery (Italy)
U. Cerchiari, Division of Neurosurgery (Italy)


Published in SPIE Proceedings Vol. 0397:
Applications of Digital Image Processing V
Andre J. Oosterlinck; Andrew G. Tescher, Editor(s)

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