Cancer is one of the most frequent causes of death worldwide. Various imaging techniques are currently used for diagnosis and therapy assessment. The MRI method is particularly gentle on the patient because it does not use chemicals or radioactive substances that are harmful to humans. In the DiaPol project, the partners use new developments in quantum physics to significantly increase the efficiency of the MRI method. A novel MRI method will be equipped with a polarizer made of nanodiamonds. The Fraunhofer IAF is consortium coordinator of the joint project. Together with the company NVision Imaging Technologies, the University of Ulm, the Hebrew University of Jerusalem and ICDAT, Fraunhofer IAF will develop novel methods to optimize diamonds with a large number of nitrogen defect centers for optimal polarization.