Imaging in Seismic Exploration and Medical Ultrasound, a Comparison

It is shown that the forward models for seismic exploration and medical ultrasound are closely related. However, the imaging approaches are significantly different. Seismic imaging occurs of/-line by a complex numerical process that includes the estimation of an inhomogeneous macro model. Ultrasound imaging occurs on-line by a double focussing process, that assumes a known homogeneous background medium. A new imaging procedure is proposed that includes on-line focussing as well as oCf-linemigration.