Multi-contrast MRI has shown to be suitable for plaque analysis, which is important for the risk assessment of internal carotid artery stenoses. The purpose of this work was the development of software prototypes, which support the development of methods for the classification and exploration of plaque-morphology in 3D and allow for a comparison with histological images and CT images. Complex exvivo plaque specimen were evaluated at a high field 9.4T MRI system with different contrasts (T1-fatsat-GRE, T2*-GRE, T2-RARE, PD-RARE) and high resolution (ca. 100m3). Plaque-images were processed to enhance specific plaque-components and combined into RGB-images. The resulting images were interactively explored in coupled views of volume-rendering and user-defined MPRs. CT images were also preprocessed for visualization. The user could then explore corresponding image regions in MR images, histological images and CT images. Initial results showed a benefit for the assessment of plaque-constitution and 3D-morphology.