A two-year-old girl who died from a brain tumour has been frozen - in the hope she will one day be revived by advances in science. Matheryn Naovaratpong, from Thailand, is thought to be the youngest person ever cryogenically preserved. The toddler was diagnosed with an aggressive form of cancer last April after she failed to wake up one morning, Motherboard's Brian Merchant reports . After being admitted to a Bangkok hospital, tests revealed she had a 11cm tumour in the left side of her brain. Scroll down for video . Matheryn Naovaratpong, from Thailand, is thought to be the youngest person ever cryogenically preserved . Doctors diagnosed her with ependymoblastoma, a rare form of brain cancer that afflicts the very young. The outlook was bleak from the start - the disease has a five-year survival rate of 30 per cent. To make matters worse, Matheryn - known to her family as Einz - had fallen into a coma. After a months of intensive treatment, including 12 rounds of brain surgery, 20 chemotherapy treatments, and 20 radiation therapy sessions, it became clear there was little more doctors could do. She died on January 8th this year after her parents switched off her life support machine. By the time she passed away, she had lost 80 per cent of the left side of her brain - essentially paralysing the right side of her body. But determined for some good to come from her death, her family have had her body cryogenically preserved - by one of the biggest  providers of this service in the world. Matheryn is currently at the Arizona-based Alcor, her brain and body frozen separately at 196C. Her family's main - although many would argue, far fetched - hope is that one day, science will have progressed enough to restore life to her. Alternatively, her parents want the cells from her brain and other parts of her body to be saved, so the disease that killed her can be studied in the future. Aside from the huge number of 'what ifs', there is the cost. 'Membership' to Alcor costs $770 a year - plus a rather more hefty $80,000 for a 'neuro' (the procedure Matheryn had) or £200,000 to have a full body frozen. Alcor is also where the bodies of famous baseball player Ted Williams, as well as his son John Henry Williams, are stored. 'It [the freezing] provides the opportunity for Matheryn to breathe again when the technology is provided and appropriate for her disease,'  said her father, who found out about the cryopreservation firm on the internet. The procedure involves moving the patient onto an ice bed, coating them in freezing materials and artificially restarting the heart with a “heart-lung-resuscitator". Over a dozen different medications are administered before blood is drained from the body and replaced with medical-grade antifreeze,. The chest cavity is then opened to attach the major blood vessels to a machine that flushes out all remaining blood, then slowly lowering the body’s temperature, at a rate of 1˚ Celsius every hour. After two weeks, the body reaches deep cryofreeze at -196˚ C. But as a family of doctors, they are hopeful, rather than unrealistically optimistic. And as Matheryn's doctor pointed out: 'Her life was made possible by modern science in the first place - she was carried by a surrogate because her mother had lost her uterus birthing a son.' The family also feels there are 'still considerable frontiers left to be examined when it comes to medicine and human physiology. 'They didn't want their daughter's life to end in vain,' Aaron Drake, Alcor's medical response director told Motherboard. 'They're hoping that by preserving the tissue cells of this particular cancer, they can come up with a better treatment plan, and maybe even eventually cure it. If you look at the global picture of what they're trying to accomplish, it's very altruistic.' But the process of cryogenically freezing the toddler wasn't just an emotional rollercoaster, but a logistical one, too. In an ideal world, she would have been flown to Arizona. But Matheryn's health was so poor and when she ended up on a ventilator, air travel became impossible. Instead, a doctor from Alcor flew to Thailand and, as soon as she was pronounced dead - at 6.18pm on that January evening - preservation of her body began. Matheryn is currently at the Arizona-based Alcor, her brain and body frozen separately.Her family's main - although many would argue, far fetched - hope is that one day, science will have progressed enough to restore life to her . Usually, the brain would be removed from the body and then frozen. But customs and repatriation issues to the US meant it was easier, according to Mr Drake, to undertake cryoprotective perfusion of Matheryn’s brain in Thailand. 'The team decided to do so without separating her brain from the rest of the body,' he said. The procedure 'involves moving the patient onto an ice bed, coating her in freezing materials and artificially restarting the heart with a “heart-lung-resuscitator". Over a dozen different medications are administered before blood is drained from the body and replaced with medical-grade antifreeze,. Alcor's mission, according to the company website, is as follows... 'The preservation of individual lives, to be sought through the following prioritized list of fundamentals: . Maintain the current patients in biostasis. Place current and future members into biostasis (when and if needed). Eventually restore to health and reintegrate into society all patients in Alcor's care. Fund research into developing more cost effective and reliable means for 1-3 above. Provide public education as a means of fostering growth to support the goals of 1, 2, 3, 4 above.' So far, the company has performed over 130 cryopreservations. The chest cavity is then opened to attach the major blood vessels to a machine that flushes out all remaining blood, then slowly lowering the body’s temperature, at a rate of 1˚ Celsius every hour. After two weeks, the body reaches deep cryofreeze at -196˚ C. Matheryn underwent a procedure called a 'neuro'. This is where the the brain is removed and stored, rather than the whole body. It is now sitting in a stainless steel, vacuum-insulated container in Arizona filled with liquid nitrogen at -196˚C. But the question still remains as to how - if science did eventually progress enough - any frozen body would actually be revived. 'We know we can regenerate a small organ, and grow a new heart,' said Mr Drake. 'We know we can 3-dimensionally print cells and hearts. So at some point we would need to regenerate her entire body, or at least her organs, and put it all together. 'Then we’d need to transplant that brain into a new body.' However a growing number of people are showing interest in the pioneering technology. 'Our market is growing,' Mr Drake told Motherboard's Brian Merchant. 'The younger generation is more accustomed to seeing changes in technology. Any thing you can come up with, six months later, there’s an app for it. 'The younger generation sees this and thinks ‘sure why not’? - they can figure everything else out, so why not this? They feel this is kind of an inevitable thing.' And for Matheryn's family, it provides peace of mind and gives them some solace from the tragedy of her death. 'At least, we devoted her life and body for the progress and development of science,' said her mother, Nareerat. 'This is also another treat for our family, we know that she's alive although we have been separated.'
Two-year-old Matheryn Naovaratpong, from Thailand, died in January .
Had battled a very rare brain cancer that affects very young children .
Her brain and body have been frozen by Arizona-based firm Alcor .
Family hopes body can be used for research - or she can one day live again .