Laser-Therapy.US
Start New Query

Can near-infrared energy reach the brain for treatment of TBI? - Video abstract [78182]

Larry D. Morries, Theodore A. Henderson MD, PhD - 2015 (Video)
This research was done under the supervision of NASA and seems to be some of the most independent research comparing therapy laser parameters.
View Resource

This video was created to support their published research. The authors did research using several lasers and slices of a sheep’s brain to try and determine the best parameter for treating TBI (Traumatic Brain Injury) with a desired fluency of 0.9 to 15 joules/cm2 at a depth of 2 cm. They state that getting the energy through the skull is especially difficult so they test multiple options so test the transfer rate. They started out using a continuous output split 980/810nm system (the only company that makes that type of split system, 80% of the power at 980nm and 20% of the power at 810nm, is LiteCure with their LightForce series). The result was less than 1/2% of the energy reached a depth of 2cm. Then they switched to pulsing and got an increase in the energy transfer. When they switched to a 810nm-only 15 watt system with pulsing the transfer rate increased to 16% of the output energy reached the target depth.

 Here are some rough numbers to review the feasibility of using this system for treatment. If the duty cycle is 70%, the system will deliver 1.68 joules per second at a depth 2cm (15wattS*70%*16%). To get 5 joules/cm2 over 15 x 15 cm treatment area would require a total of 1125 joules at depth. This would take 23 minutes.

This research shows that only class 4 systems can delivery the level of power needed for this kind of therapy in a typical rushed doctor's office. A class 3b system with 1 watt would take 4 - 5 hours per treatment to get the same dosage.

The original research publication is titled " Treatments for traumatic brain injury with emphasis on transcranial near-infrared laser phototherapy"

 

video length: (9:18)


Original Source: https://www.youtube.com/watch?v=iZbP2IVekh0

The query result(s) can be shared using the following direct link. Anyone who clicks on this link in an email or on a web site will be shown the current results for the query.
http://www.laser-therapy.us/research/index.cfm?researchinput=Can near-infrared energy reach the brain for treatment of TBI