Distributing or using cracked software constitutes software piracy, which violates copyright laws (including the Digital Millennium Copyright Act in the US and similar laws worldwide). It also exposes users to serious risks: malware, ransomware, data theft, and corrupted medical imaging files.
If you are looking for a professional, "crack-free" (meaning official and secure) way to use RadiAnt DICOM Viewer
Seeking a "crack free" (meaning a bypassed activation) version from unofficial sources can lead to: