III.A.8.     Assume that a scan of one CT slice produces an average dose of 3 rad to the tissue in the slice.     If 10 contiguous slices are scanned with the same factors:

    a.     The average dose to the tissue within the slice will increase by at least a factor of 10.

    b.     The integral dose (imparted energy) will increase by at least a factor of 10.

    c.     The risk to the patient will be increased.

    d.     Scattered radiation contributes to the dose.