J.F. Zelasco, A.E. Blangino, J. Donayo, P. Calvo, and J.F. Fernández Ausinaga (Argentina)
Stereotaxic frame; 3D Image; Brain Atlas; Neuronavigator, radiosurgery, image segmentation.
In this work we present an environment for stereotaxic radiosurgery and neurosurgery based on medical image processing and its treatment. The integrated tool we have developed facilitates the diagnosis of cerebral lesions and the planning of diverse invasive and non procedures, to show the result of studies performed on a patient. The integrated tool also allow the simulation of a surgery (whichever be the direction of the instrument entering in the brain), the simulation of a radiosurgery (the isocurves on any plane not only on the traditional ones). The tool, also, add the facility to superimpose a brain atlas (information included as a data base). The main difference with such systems commercially known is the possibility of visualising virtual sections in any desired plane intersection of the 3D patient image built from the RMN, TM, etc. On the other hand, the power of the segmentation algorithm developed enables a great accuracy in the identification of each organ, the measuring in any direction the distance between isodoses surfaces and organ structures to evaluate the kind of risk in affecting other organs. In addition, the possibility of continuously increase the information stored in the data base gives it a great advantage in helping the physician to diagnose and plan the studies, surgery or treatment. It is also useful in training and as an educational support for students and neurosurgery residents. The environment includes the possibility to generate videos of the instrument path and store them. We choose this way of presentation rather than the rendering 3D images in order to fulfill the requirements of the director of the Radiosurgery and Sterotaxic Neurosurgery Service Hospital Dr. Cosme Argerich requirements (where part of this tool is in use, and the last improvement is in trial phase). With the videos and slices in selected directions, the physician evaluates with better precision the proximity of the surgery instrument (or the isosurface) to any particular cerebral structure.
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