Watching Emily Turner run around Princess Margaret Hospital with a doll in one hand and a cracker in the other, it is hard to believe the happy four-year-old could hardly stand three years ago because of a stomach tumour.
Police officer Matt Turner's life was turned upside down in January 2010 when doctors revealed his daughter had neuroblastoma, a cancer that attacks nerve cells.
Emily is now in remission after she had surgery to remove the tumour, but has to revisit PMH every six months for a scan to make sure the cancer has not returned.
After being injected with a radioactive substance, Emily is expected to lie perfectly still for about an hour under the hospital's gamma camera as it creates an image of her body.
Mr Turner and his daughter have donated a new 3-D television and DVD player to the hospital's nuclear medicine department to help staff keep children occupied while they are under the camera.
Mr Turner said it was his way of thanking staff at PMH for their help and support.
"It is stressful because you have got to get the scan done that day, that hour, because there is a queue of people waiting and if you don't get it done you have to wait another six months," he said.
"The people at PMH were just fantastic and that is what really made me want to do it."
Mr Turner's colleague at WA Police, Tony Ryan, organised for Video Ezy to donate $1000 of new DVDs to the hospital.
His five-year-old son Charlie is also in remission after being diagnosed with advanced neuroblastoma on New Year's Eve in 2010.
The men work together year-round to raise money for the Police Commissioner's charity for sick children, Bright Blue.