Simplify the following text for a Grade 11 native English-speaking person.
Original: They go on adventures such as going to the hospital which Freak claims has a secret department called the `` Bionics Department '' which has had his brain cat scanned to be fitted into a bionic body .
Simplified: They go on adventures such as going to the hospital which Freak claims has a secret department called the `` Bionics Department '' which has had his brain cat scanned to be fitted into an artificial body .