{HEAD ~ The X ray CT apparatus} of the tenth aspect can suitably implement {TAIL ~ the image producing method} of the second aspect 
suitably implement
{ HEAD ~ The X ray CT apparatus } of the tenth aspect can suitably implement { TAIL ~ the image producing method } of the second aspect
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH