Journal
IEEE ACCESS
Volume 7, Issue -, Pages 39098-39116Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2019.2904788
Keywords
Hyperspectral imaging; cancer detection; biomedical imaging; medical diagnostic imaging; image databases
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Funding
- European Project HELICoiD HypErspectraL Imaging Cancer Detection'' - European Commission through the FP7 FET (Future and Emerging Technologies) Open Programme [618080, ICT-2011.9.2]
- ITHaCA Project Hyperespectral Identification of Brain Tumors'' - Canary Islands Government through the Canarian Agency for Research, Innovation and the Information Society (ACIISI) [2017010164]
- 2016 Ph.D. Training Program for Research Staff of the University of Las Palmas de Gran Canaria
- Agencia Canaria de Investigacion, Innovacion y Sociedad de la Informacion (ACIISI)'' of the Conserjer i a de Economia, Industria, Comercio y Conocimiento'' of the Gobierno de Canarias'' - European Social Fund (FSE) (POC 2014-2020)
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The use of hyperspectral imaging for medical applications is becoming more common in recent years. One of the main obstacles that researchers find when developing hyperspectral algorithms for medical applications is the lack of specific, publicly available, and hyperspectral medical data. The work described in this paper was developed within the framework of the European project HELICoiD (HypErspectraL Imaging Cancer Detection), which had as a main goal the application of hyperspectral imaging to the delineation of brain tumors in real-time during neurosurgical operations. In this paper, the methodology followed to generate the first hyperspectral database of in-vivo human brain tissues is presented. Data was acquired employing a customized hyperspectral acquisition system capable of capturing information in the Visual and Near InfraRed (VNIR) range from 400 to 1000 nm. Repeatability was assessed for the cases where two images of the same scene were captured consecutively. The analysis reveals that the system works more efficiently in the spectral range between 450 and 900 nm. A total of 36 hyperspectral images from 22 different patients were obtained. From these data, more than 300 000 spectral signatures were labeled employing a semi-automatic methodology based on the spectral angle mapper algorithm. Four different classes were defined: normal tissue, tumor tissue, blood vessel, and background elements. All the hyperspectral data has been made available in a public repository.
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