He gets on a nifty little platform that elevates and then extends towards the machine. Everyone's watching, open-mouthed. Astrid takes Walter's hand. Peter stares at the machine, for a few moments, and reaches her hand out to it. The second he makes contact, he's zapped backwards, off the platform, crashing down to the hard concrete floor. Jesus, you guys couldn't put any gym mats around? Given him a goddamn helmet? He's unconscious, head bloodied. Everyone freaks. As you would.
The EMTs roll Peter's body on a gurney down the hallway, Walter in pursuit. The ER doctor shouts out orders, with Walter anxiously telling them Peter's blood type, and saying they need to do an echocardiogram. The doctor has to physically restrain Walter from following them into the trauma bay, but he does it as compassionately as the father of the patient warrants, promising to take good care of him, and then Astrid is there to look after him.
However long it is later, Olivia rushes into the hospital, and is stopped by a nurse who tries to tell her that this area is for staff and immediate family only. Olivia flashes her badge and lets the nurse live, and Astrid comes over to tell Olivia that Peter is unconscious, but his vitals are stable. "They just... they can't wake him up. He's with the doctors now."
Olivia's stunned, and Astrid says the MRI revealed no brain trauma. "They're just hoping that he's gonna come out of it soon." God, it must be awful to find out that all the doctors can do is just hope. Astrid tells Olivia that Peter tried to go into the machine but it wouldn't let him. "It's like it's protecting itself or something," she says. Olivia asks after Walter, who Astrid says is taking it pretty hard.