/usr/lib/ is in libdcmtk-dev 3.6.1~20160216-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libdcmjpls.so
/usr/lib/libdcmnet.so
/usr/lib/libdcmpstat.so
/usr/lib/libdcmqrdb.so
/usr/lib/libdcmrt.so
/usr/lib/libdcmseg.so
/usr/lib/libdcmsr.so
/usr/lib/libdcmtls.so
/usr/lib/libdcmwlm.so
/usr/lib/libi2d.so
/usr/lib/libijg12.so
/usr/lib/libijg16.so
/usr/lib/libijg8.so
/usr/lib/liboflog.so
/usr/lib/libdcmfg.so
/usr/lib/libofstd.so
/usr/lib/libdcmimage.so
/usr/lib/libdcmimgle.so
/usr/lib/libdcmiod.so
/usr/lib/libdcmjpeg.so
/usr/lib/cmake/
/usr/lib/cmake/dcmtk/
/usr/lib/cmake/dcmtk/DCMTKConfig.cmake
/usr/lib/cmake/dcmtk/DCMTKTargets-none.cmake
/usr/lib/cmake/dcmtk/DCMTKTargets.cmake
/usr/lib/libcmr.so
/usr/lib/libdcmdata.so
/usr/lib/libdcmdsig.so