Most obviously, have you asked for them, in writing??
I don't believe that you would have too much problem getting a copy of the State Police photos because they may be public record. Additionally, as a family member, they might make them available to you for the asking. However, there might be some concern regarding possible litigation issues if there is a possibility of the state being blamed.
More of a problem with the x-rays. Primarily, they are considered the property of the hospital, with a secondary ownership issue being to the patient. Since the patient is deceased, the estate might be successful in getting a copy of them. Have the estate ask for a copy. Again, the hospital has probably would have a much greater concern for liability, making this a much harder issue to resolve. This might require the services of an attorney or a court order.