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International Journal of Photoenergy
Volume 2014 (2014), Article ID 268354, 5 pages
Review Article

Laser Therapy and Dementia: A Database Analysis and Future Aspects on LED-Based Systems

Research Unit for Complementary and Integrative Laser Medicine, Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine, and TCM Research Center Graz, Medical University of Graz, Auenbruggerplatz 29, 8036 Graz, Austria

Received 26 March 2014; Accepted 9 April 2014; Published 29 April 2014

Academic Editor: Lu Wang

Copyright © 2014 Daniela Litscher and Gerhard Litscher. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mainly because of the movement in the age pyramid, one can assume that the incidence of Alzheimer’s disease or dementia in general will increase in the coming decades. This paper employs a database analysis to examine the profile of publication activity related to this topic. Two databases were searched: PubMed and Cochrane Library. About 600 papers related to the research area “dementia and laser” and about 450 papers related to the search terms “Alzheimer and laser” were found in these two most commonly used databases. Ten plus one papers are described in detail and are discussed in the context of the laser research performed at the Medical University of Graz. First results concerning the measurement of the transmission factor (TF) through the human skull of a new LED- (light emitting diode-) based system are presented (TF = 0.0434 ± 0.0104 (SD)). The measurements show that this LED system (using the QIT (quantum optical induced transparency) effect) might be used in the treatment of dementia.