Редактирование: Cryonics revival (раздел)

== Damage ==

The kinds of damage that need to be repaired have been slowly reduced over time, but at present, under the best conditions, the process of cryopreservation still causes severe damage to the Patients.

=== Cryoprotectant Toxicity ===

=== Cracking ===

There are two forms of cracking: That which is caused by thermal stress, and that which is caused by cooling below T<sub>g</sub>. Cracks are generally few and large, which is far better than many smaller cracks; since from an information point of view they cause little damage.

If revival is attempted through Whole Brain Emulation, then fixing cracks is just a matter of adjusting the images. If it is attempted through some form of Biological Repair, this will require other methods to readjust the severed pieces of tissue.

==== Thermal Stress ====

==== Glass Cracks ====

When materials (Not only glasses) are cooled below their vitrification temperature, cracking occurs. Since the T<sub>g</sub> of the cryoprotectant solutions is far above the temperature at which Nitrogen liquefies, cracking occurs during the cooling to this temperature, whether tissue has been vitrified or not. If cryoprotective Perfusion is not carried out properly or is compromised by severe ischemic injury, cracking can begin at temperatures as high as -90 ºC.

A solution for this (In properly perfused patients for whom cracking will only occur below glass transition) is Intermediate Temperature Storage.