The 37-year-old rapper was whisked to Epworth Hospital in Richmond, just hours before he was due to play his final gig in the city, for an emergency MRI scan following alleged concerns he had suffered a seizure.
Lorraine Terry, who was at the hospital with her daughter at the time, told Australia's Woman's Day magazine: "My daughter was having an MRI.
Shortly after it began, security burst in and cleared the area.
"Everyone was moved out of the waiting and consulting rooms. We were the only ones left apart from doctors and nurses - we couldn't leave as the MRI wasn't finished.
"Next thing we knew, Kanye was stretchered in surrounded by security.
He had one side of his face covered with something white."
She added: "Everyone was massively panicked. And they were very nervous about making sure the area was completely clear."
However, despite the alleged health scare, it is believed the Bound 2 hitmaker left the hospital around 4:30pm, before heading to the Rod Laver Arena to perform for his fans later that evening.
Meanwhile, West is expected to play in Sydney tomorrow and Saturday, before finishing up the Australia leg of his Yeezus world tour in Brisbane on Monday.
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