Welcome to Cancer Chat Smith31 although I'm really sorry to hear your mum's bilateral brains mets has only just been diagnosed.

This must be such a difficult time for you both but I'm glad to hear treatment has been offered to your mum. You can find out more about gamma knife radiotherapy on our website but in regards to the question you've asked in your post, it would be best to give our cancer nurses a call on 0808 800 4040, Monday - Friday between 9a.m - 5p.m. They're very insightful and will do all they can to give you the information you're seeking and make this easier to understand.

We're thinking of you Smith31 and hope it won't be long until your mum's treatment can get underway.

Kind regards,

Steph, Cancer Chat Moderator