/usr/include/dcmtk/dcmsr/ is in libdcmtk2-dev 3.6.0-15.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dcmtk/dcmsr/dsrbascc.h
/usr/include/dcmtk/dcmsr/dsrchecc.h
/usr/include/dcmtk/dcmsr/dsrcitem.h
/usr/include/dcmtk/dcmsr/dsrcodtn.h
/usr/include/dcmtk/dcmsr/dsrcodvl.h
/usr/include/dcmtk/dcmsr/dsrcolcc.h
/usr/include/dcmtk/dcmsr/dsrcomcc.h
/usr/include/dcmtk/dcmsr/dsrcomtn.h
/usr/include/dcmtk/dcmsr/dsrcomvl.h
/usr/include/dcmtk/dcmsr/dsrcontn.h
/usr/include/dcmtk/dcmsr/dsrcsidl.h
/usr/include/dcmtk/dcmsr/dsrdattn.h
/usr/include/dcmtk/dcmsr/dsrdoc.h
/usr/include/dcmtk/dcmsr/dsrdoctn.h
/usr/include/dcmtk/dcmsr/dsrdoctr.h
/usr/include/dcmtk/dcmsr/dsrdtitn.h
/usr/include/dcmtk/dcmsr/dsrenhcc.h
/usr/include/dcmtk/dcmsr/dsrimgfr.h
/usr/include/dcmtk/dcmsr/dsrimgtn.h
/usr/include/dcmtk/dcmsr/dsrimgvl.h
/usr/include/dcmtk/dcmsr/dsrimpcc.h
/usr/include/dcmtk/dcmsr/dsriodcc.h
/usr/include/dcmtk/dcmsr/dsrkeycc.h
/usr/include/dcmtk/dcmsr/dsrmaccc.h
/usr/include/dcmtk/dcmsr/dsrmamcc.h
/usr/include/dcmtk/dcmsr/dsrnumtn.h
/usr/include/dcmtk/dcmsr/dsrnumvl.h
/usr/include/dcmtk/dcmsr/dsrpnmtn.h
/usr/include/dcmtk/dcmsr/dsrprocc.h
/usr/include/dcmtk/dcmsr/dsrreftn.h
/usr/include/dcmtk/dcmsr/dsrsc3gr.h
/usr/include/dcmtk/dcmsr/dsrsc3tn.h
/usr/include/dcmtk/dcmsr/dsrsc3vl.h
/usr/include/dcmtk/dcmsr/dsrscogr.h
/usr/include/dcmtk/dcmsr/dsrscotn.h
/usr/include/dcmtk/dcmsr/dsrscovl.h
/usr/include/dcmtk/dcmsr/dsrsoprf.h
/usr/include/dcmtk/dcmsr/dsrspecc.h
/usr/include/dcmtk/dcmsr/dsrstrvl.h
/usr/include/dcmtk/dcmsr/dsrtcodt.h
/usr/include/dcmtk/dcmsr/dsrtcosp.h
/usr/include/dcmtk/dcmsr/dsrtcotn.h
/usr/include/dcmtk/dcmsr/dsrtcoto.h
/usr/include/dcmtk/dcmsr/dsrtcovl.h
/usr/include/dcmtk/dcmsr/dsrtextn.h
/usr/include/dcmtk/dcmsr/dsrtimtn.h
/usr/include/dcmtk/dcmsr/dsrtlist.h
/usr/include/dcmtk/dcmsr/dsrtncsr.h
/usr/include/dcmtk/dcmsr/dsrtree.h
/usr/include/dcmtk/dcmsr/dsrtypes.h
/usr/include/dcmtk/dcmsr/dsruidtn.h
/usr/include/dcmtk/dcmsr/dsrwavch.h
/usr/include/dcmtk/dcmsr/dsrwavtn.h
/usr/include/dcmtk/dcmsr/dsrwavvl.h
/usr/include/dcmtk/dcmsr/dsrxmlc.h
/usr/include/dcmtk/dcmsr/dsrxmld.h
/usr/include/dcmtk/dcmsr/dsrxrdcc.h