There are a number of methods for producing {TAIL ~ images} of internal structures of {HEAD ~ a body} 
There are a number of methods for producing { TAIL ~ images } of internal structures of { HEAD ~ a body }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD