Three-dimensional pictures of human’s internal organs became a part of general practice in early 90’s after computer tomographic scanners were equipped with powerful computing systems capable of controlled processing of two-dimensional crosscuts. Nowadays three-dimensional representation of elements of diagnostically interesting zone is an everyday reality in leading clinics of the world.
Method of three-dimensional representation of diagnostic data is generally related to powerful hardware resources, i.e. acquiring of parallel (or placed at previously specified angles) magnetic-resonance, roentgen or NLS-graphic images with their following integration into single visual array where an operator can separately visualize bones, muscles, soft tissues, vessels, nerves etc. highlighting them with color while other tissues are shown in gray semitransparent tone.
Rendering of three-dimensional NLS-graphic images of abdominal cavity organs is considered nowadays to be an experimental task mainly. Rarely used due to its low information value method of creating of separate two-dimensional images of abdominal cavity organs by means of NLS-visualization is much more interesting for rendering three-dimensional diagnostic images.
In addition to solving of usual objectives on the basis of two-dimensional NLS-graphy of abdominal cavity organs data many parallel diagnostic tasks are solved by means of non-linear algorithms and massive calculations application.
Thanks to a number of qualitative changes of NLS-diagnostic devices - Metatron Hunter 4025, NLS-graphy potentials were widened to extent unthinkable even few years ago, when CT and MRI had obviously growing advantage in surgical gastroenterology.
Application of high-frequency sensors during NLS-studies in gastroenterology allowed to move early diagnostics of pathology to a qualitatively new and higher level. By means of spectral-entropic analysis and ultramicroscanning it is possible to diagnose superficial carcinoma of esophagus or stomach, when cancerous cells infiltrate mucous and sub-mucous levels only and initial manifestations of metastases in perioesophageal and periogastric lymph nodes. It is considered that application of high-frequency sensors at three-dimensional visualization ensures determining of depth and length of tumorous infiltration into stomach walls in 93.6% of cases. Besides using of high-frequency sensors allows to excel all known methods of polyps and bile papilla cancer diagnostic, at the same time specificity of the method at preoperational diagnostic of choledocholithiasis reaches 94%. And finally, there is information that application of highfrequency sensors allows to visualize concrements not visible even at intraoperational cholengiography.
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