A complete lack of recognition, that was what Adrian saw in Cassie's eyes. He didn't realise quite how much it hurt him till he tried to stand up from leaning against the scanner. He held onto the alien device as he felt his knees about to give way. Adrian managed to hide the moment of weakness, if barely. He didn't feel it would have helped the situation to fall to his knees and cry, all because Cassie's couldn't see it was him. 
Adrian didn't miss what Jack was doing to help him, he couldn't hear the words clearly but from what he could make out along with the actions, it was clear as day. 

As Cassie took her first step towards him, Adrian glanced at Jack in a silent thanks. He knew he would have to talk to the man later to ask what the hell had just happened, he had clearly seen this process before.
Adrian kept quiet as he watched Cassie walk up to him. He could understand her reaction, if he had had enough time to get used to his face before and had a mirror now, he expected he would be similarly shocked. But how much had he changed? There was no doubt he felt different...stronger, certainly, but he had been dying earlier. His voice was different, if it sounded odd to him, how might it sound to the other people in the room? His hair was longer and had no curls, that wasn't a huge change but the curls would be missed. There wasn't all that much he even knew about his old appearance to complain about this one, but it wasn't half distracting how tight his shirt felt.

Adrian focused on Cassie and pushed aside the thoughts of how he looked, he was still himself after all. Tying his own mind around how he looked would only add his own apprehension to the mix, he felt that at lest one of them had to remain somewhat calm. He eyed her expression and the way she bit her lip, his eyes ran down to her fists and how tightly they were clenched. He'd have to keep an eye out for this body language in the future. If one meant fear and the other was a sign of her fighting against the need to do something, namely run away...he...didn't remember being so unfocused brained before. Or perhaps he was focusing on too many things, had his mind changed with his body? Was he still Adrian?

He felt like he was.
Didn't that mean something?

He knew it meant something to her, so when she stopped a short distance from him, he was as close to unafraid as he could get when it came to meeting her eyes. He started with a nod as she said his name, because he couldn't immediately trust his voice. "It's me." He finally said after a few seconds. "I'm still Adrian, I'm still me." As he said the words, he could almost physically feel something slide into place in his mind. The first piece in 'making his mark' in the mind of a legend.
He had some shoes to grow into.
But right now he wanted to hug the woman in front of him.

Adrian's knees had enough feeling in them that he felt comfortable taking a step towards Cassie. The step was slow, small and very careful, as if he was afraid to scare off a frightened deer. She may not have been a forest animal, but from what he could tell of her, she most certainly looked ready to bolt. 
"Cassie..." He'd have to get used to how his voice sounded. "I'm still the same person." He raised his right hand and tapped on the side of his head with his index and middle fingers. "In here." Adrian added as he tapped.
He waited a few seconds. "So...how do I look?" He asked quietly, there was the hint of a smile on his lips. Couldn't this version of him stay serious? Or was that his mind's reaction to this change? It didn't matter, what did was Cassie's reaction. Of all these people who apparently knew the Doctor, she was the one who knew him as much as he currently knew himself.