Is DCMTK safe for use in multi-threaded applications?
Yes, starting with release 3.6.2.To the best of our knowledge, DCMTK is fully thread-safe starting with release 3.6.2, i.e. the libraries are safe fur use in multi-threaded applications. No system functions known to be thread unsafe are used if thread-safe alternatives (e.g. readdir_r instead of readdir on Posix systems) are available.