/usr/lib/x86_64-linux-gnu/ is in libmia-2.4-dev 2.4.3-5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/mia-2.4/
/usr/lib/x86_64-linux-gnu/mia-2.4/include/
/usr/lib/x86_64-linux-gnu/mia-2.4/include/miaconfig.h
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/mia2d-2.4.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/mia2dmyocardperf-2.4.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/mia3d-2.4.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/miacore-2.4.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/miamesh-2.4.pc
/usr/lib/x86_64-linux-gnu/libdicom4mia-2.4.so
/usr/lib/x86_64-linux-gnu/libmia2d-2.4.so
/usr/lib/x86_64-linux-gnu/libmia2dmyocardperf-2.4.so
/usr/lib/x86_64-linux-gnu/libmia2dtest-2.4.so
/usr/lib/x86_64-linux-gnu/libmia3d-2.4.so
/usr/lib/x86_64-linux-gnu/libmia3dtest-2.4.so
/usr/lib/x86_64-linux-gnu/libmiacore-2.4.so
/usr/lib/x86_64-linux-gnu/libmiagts-2.4.so
/usr/lib/x86_64-linux-gnu/libmiahdf5-2.4.so
/usr/lib/x86_64-linux-gnu/libmiamesh-2.4.so
/usr/lib/x86_64-linux-gnu/libvista4mia-2.4.so