New Concept of Scattered Radiation Imagingwith High Sensitivity

We propose a new scheme for imaging radiation emitting objects by measuring its non collimated scattered radiation at various energies. A few years ago we have put forward the idea of scatter imaging and show how it works with a collimated detector. To increase drastically the sensitivity of this modality as well as its field of view and resolution we propose that data acquisition should be performed without collimation as it is done in Compton cameras. We discuss image formation by scattered radiation in this context by computing and comparing the related point spread functions (PSF) and comment on their properties. We also present numerical simulations to support the attractiveness of this modality.