New bimodal scattered radiation tomographic imaging with attenuation and electron density correction algorithm

Bimodal medical imaging, which combines two non-invasive techniques to explore two different aspects (e.g. function and morphology) of an organ, has emerged as a major clinical imaging modality nowadays. The gained information as compared to single modality imaging is overwhelmingly useful for diagnostics and therapy planning. Up to now all bimodal techniques make use exclusively of primary radiation. In this work, we describe a new bimodal imaging concept based solely on the exploitation of scattered radiation. Following a presentation of its theoretical basis, we discuss the modellings of measurements and inversion formulae used for image reconstruction. Thus an attenuation and electron density correction algorithm inspired of the Iterative Pre-Correction algorithm (IPC) is proposed. Simulation results demonstrate convincingly the feasibility and efficiency of this new bimodal imaging modality.