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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Expert Rev Med Devices. 2012 Jan;9(1):71–83. doi: 10.1586/erd.11.64

Figure 4. Clinical noninvasive transcranial near-infrared laser therapy treatment (light emitting diode) for traumatic brain injury.

Figure 4

The figure shows a MedX Health Corp. (Mississauga, ON, Canada) light emitting diode (LED). (A) The LED has one circular-shaped cluster head, with a diameter of 5.35 cm (2.1 inches). Treatment area coverage is 22.48 cm2; each cluster head contained 61 diodes (52 near-infrared 870-nm diodes and nine red 633-nm diodes, 12–15 mW each). Total optical output power was 500 mW (+20%) continuous wave; power density was 22.2 mW/cm2 (+20%). (B) Close-up view of a patient receiving LED treatment to the left temporal lobe. Note the use of protective goggles during LED treatment.

Photographs courtesy of M Hamblin, Harvard University (Boston, MA, USA).