/usr/lib/camitk-4.0/components/libdicom.so.4 is in libcamitk4 4.0.4-2ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/camitk-4.0/components/libdicom.so.4.0.4
/usr/lib/camitk-4.0/components/libdicom.so.4.0.4