>>4344204asa 1000 and below is ok
if you are scared, pro image 100 is literally indestructible
i've brought one roll through at least 6 new CT scans and a good 20-30 regular x-rays, no issues to the film itself other than my mediocre photography skills
pic related, half frame camera, exposed after two CT scans, developed after the rest, film in the camera from the beginning