Software and Hardware Solution of a Complex Tumor Visualization System for Use in a Medical Institution of an Industrial Enterprise

Currently, workers of oil and gas enterprises, working in areas with toxic volatile substances, have an increased probability of the appearance of tumors of various nature. In order to carry out a high-quality surgical intervention, minimize health risks, as well as reduce the postoperative recovery time of a highly qualified staff, a preoperative planning technique is used, based on modeling the tumor and forming a plan for its step-by-step removal. In order to increase the accuracy of reproduction of tumor surface models, this article analyzes current software tools for modeling tumors based on data obtained during magnetic resonance imaging, and devices for outputting these data to printed surface. It is proposed to use an improved method of reproducing 3D tumor models, based on additional processing of tomographic images. The improved method provides for several ways of processing and analyzing the slices: cutting the boundaries of the slices to sizes close to the structures to be selected; linear contrast of slices; optional positive-negative conversion; gamma correction of slices; brightness correction; contrast correction; control of brightness levels and their distribution according to the histogram; threshold processing of slices; spatial median filtering. The proposed slice processing improvements are modeled in the computer algebra system Mathcad, and in the LabView development environment these improvements are implemented in a virtual device for rendering 3D tumor models. The article also presents an improved method of displaying medical information using tablet graph plotter. In the course of the work, the structural and circuit diagrams of such a device were designed, as well as its physical model was built. Working with the graph plotter model, the selected processed slice was converted into a set of commands for the model to reproduce its outline. The test drawings were digitized and compared with the digital standard.