Contributions ============= The `contrib folder `_ contains additional utilities and functionalities that extend the core capabilities of OpenGATE. These contributions include commonly used tools and configurations, such as: - Standard imaging phantoms (e.g., NEMA, IEC) - Linac models - Predefined SPECT and PET imaging systems Several tests within OpenGATE make use of these contributions to facilitate specific applications. If you would like to propose a new contribution, please contact the development team. Your additions can help enhance the functionality of OpenGATE for the entire community.