90cm central opening? I guess that is the hole you go through? If so you wouldn't get me in one. My claustrophobia wouldn't allow it.
A nurse at the MRI when I went said 20% of people can't cope with the entombment of the normal MRI's.
After pressing the escape button a few times they put me in a MRI where you lay flat on a bed and this huge disc comes down but you arms are free so you don't feel so trapped.
I just about managed it.
That said the accuracy of the images was unbelievable so Gawd knows what the Iseult is like.