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