Lady Gaga has revealed that she has undergone a MRI scan.
The chart-topping pop star, whose real name is Stefani Germanotta, also said there are no side effects from the concussion she suffered during a gig in New Zealand when a dancer accidentally dropped a pole on her head.
"Went for an MRI. No harm from the concussion but it appears my brain is just water and a large floating jellyfish," she joked on Twitter.
The Marry The Night singer was performing her hit Judas in Auckland when she was injured, but went on to finish her performance. Doctors later told her she was suffering from concussion and she was left with a huge black eye.
Gaga - who is launching her first perfume, Fame, and will announce the title of her new album in September - has been in Sydney for the Australian leg of her Born This Way Ball tour.
She is set to return to the UK in September for a run of gigs, including two at London's Twickenham Stadium.