{HEAD ~ A low point} and {TAIL ~ an edge point} are identified from the histogram and integral, and based on the type of radiographic examination selected, are used with appropriate constants and algorithms to calculate a maximum and minimum value 
{ HEAD ~ A low point } and { TAIL ~ an edge point } are identified from the histogram and integral , and based on the type of radiographic examination selected , are used with appropriate constants and algorithms to calculate a maximum and minimum value
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH