Herein, “different kinds of medical images” indicate medical images that have been obtained by different modality or {HEAD ~ medical images} that have been obtained by {TAIL ~ different imaging method} 
Herein , “ different kinds of medical images ” indicate medical images that have been obtained by different modality or { HEAD ~ medical images } that have been obtained by { TAIL ~ different imaging method }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL