EAN: 9783961474455

Bilder-Quelle: discount24.de - Sport-Freizeit

Worldwide carcinomas are the second leading cause of death after cardiovascular diseases. Of these more than 25 % are caused by cancer in the gastrointestinal tract. However screening still misses about 20 % of carcinomas. An optimal solution would be a red flag technology to locate the suspicious area. Despite the use of many optical technologies and advancements in traditional endoscopic technologies most methods have failed to significantly improve the detectability of carcinomas in the GI. Therefore it has been suggested in the literature to use spectroscopic quantitative measurements which is achieved by hyperspectral imaging. However in this work a multispectral endoscope system for in vivo use is used for human (stomach) and mouse (colon) studies. In the human study the tumours could only be found to a limited extent with the standard methods (MCC = 0.32 ACC2=0.68). Nevertheless this is a significant improvement compared to previous results. The introduction of spectral spatial variation as a spatial-spectral feature improves the results significantly again. Compared to the human study the results from the mouse model show better classification results: ACC2 = 0.73 and MCC = 0.47. Thus for the development of an endoscopic red flag technique a point technique for correct pre-labelling of the data is needed. Moreover the results of this MSI in vivo study with spatial features are similar to the recent HSI ex vivo studies. Therefore it is likely that MSI will remain part of future research.

Produktinformationen zuletzt aktualisiert am
18.06.2025 um 23:00 Uhr

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