Biological tissues imaging with time domain topological energy

Time Domain Topological Energy (TDTE) is a new imaging method that comes from the field of shape optimisation under constraints. The adjoint problem in time domain shows a link with the refocusing properties of time reversal, giving thus an efficient solution of the inverse problem of acoustical imaging. It has been first employed for Non Destructive Testing (NDT) where the performances have proved to be higher than classical tools.This method has given good results for the detection of high acoustic impedance defects and has been successfully adapted to the imaging of low impedance variations such as biological tissues.