Light source design for spectral tuning in biomedical imaging

authored by

Chandrajit Basu, Sebastian Schlangen, Merve Meinhardt-Wollweber, Bernhard Roth

Abstract

We propose an architecture with a remote phosphor-based modular and compact light-emitting diode (LED) light source in a noncontact dermoscope prototype for skin cancer screening. The spectrum and color temperature of the output light can easily and significantly be changed depending on spectral absorption characteristics of the tissues being imaged. The new system has several advantages compared to state-of-the-art phosphor converted ultrabright white LEDs, used in a wide range of medical imaging devices, which have a fixed spectrum and color temperature at a given operating point. In particular, the system can more easily be adapted to the requirements originating from different tissues in the human body, which have wavelength-dependent absorption and reflectivity. This leads to improved contrast for different kinds of imaged tissue components. The concept of such a lighting architecture can be vastly utilized in many other medical imaging devices including endoscopic systems.

Organisation(s)

Hannover Centre for Optical Technologies (HOT)

Type

Article

Journal

Journal of Medical Imaging

Volume

2

ISSN

2329-4302

Publication date

08.10.2015

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

Sustainable Development Goals

SDG 3 - Good Health and Well-being

Electronic version(s)

https://doi.org/10.1117/1.JMI.2.4.044501 (Access: Open)