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Compact and ultracompact spectral imagers: technology and applications in biomedical imaging
Minh H Tran1, Baowei Fei1,2,3
1University of Texas at Dallas, Department of Bioengineering, Richardson, Texas, United States.
Journal of Biomedical Optics
|April 10, 2023
Summary
Compact spectral imaging cameras are advancing biomedical imaging. These portable systems offer new diagnostic and surgical applications, making them the future of the field.
Area of Science:
- Optics and Photonics
- Biomedical Engineering
- Imaging Technology
Background:
- Spectral imaging, encompassing hyperspectral and multispectral techniques, captures data across numerous wavelength bands.
- Emerging compact and portable spectral imaging cameras are expanding possibilities in biomedical applications.
Purpose of the Study:
- To review technological trends in upcoming spectral cameras.
- To highlight novel applications enabled by portable spectral imaging.
- To guide researchers in selecting appropriate spectral imaging systems.
Main Methods:
- Comprehensive literature review across Scopus, PubMed, and Web of Science.
- Inclusion of fully realized systems with defined dimensions.
- Analysis of system dimensions and weights to define 'compact'.
Main Results:
- Diverse contributions from industry, academia, and hobbyists.
- Innovative engineering approaches including Fabry-Perot interferometers, mosaic arrays, MEMS, 3D printing, LEDs, and smartphone integration.
- Application of compact spectral imagers in *in vivo* and *ex vivo* bioimaging for diagnosis and surgery.
Conclusions:
- Compact and ultracompact spectral imagers represent the future of spectral imaging.
- Bioimaging research focuses on developing low-cost, fast, and mobile spectral imaging systems.
- Handheld spectral imaging devices are poised to revolutionize biomedical diagnostics and procedures.

