SPECT scans demonstrate the relative amount of blood that is able to reach the different areas in the brain.
Color coding allows easy visualization of what is occurring with blue areas representing little blood flow and yellow areas indicating normal blood flow.
Efrain Olszewer has pre- and post-angiograms documenting collateral circulation beginning as early as ten to twenty hours after initiating hyperbaric therapy for cerebral vascular disease and peripheral arteriosclerosis at pressures lower than 1.3 ATA It is known that one of the problems children with autism have is decreased blood flow to the brain (cerebral hypoperfusion).
Therefore is has been speculated that angioneogenesis is the way that HBOT helps autism However, though angioneogenesis may be one mechanism by which children with autism are helped by HBOT, angioneogenesis may not be the primary mechanism by which HBOT works The amount of cerebral hypoperfusion in autistics compared to controls is about 8%, so a small increase in oxygen delivery may be all that is needed to overcome this deficit and show clinical benefit.
HBOT may have the potential to activate dysfunctional mitochondria and/or to activate "dormant/idling cells" thereby allowing more "mitochondrial product" to be appreciated by the body., not only due to the competing mechanisms of vasodilation and vasoconstriction, but also due to decreasing the inflammation that secondarily constricts blood vessel lumens in a closed spac.Because inflammation is accompanied by swelling, tissue expansion or compression will occur.I explain to my patients that to get cockroaches out of the kitchen, I can either kill them with my shoe or turn on the light.Interestingly it only takes a little bit of light for them to leave the room.