ULM initially started in 2D. Planar ultrasound remains more common in ultrafast ultrasound or in clinical settings. In particular, the vast majority of contrast ultrasound, from which ULM is technically derived, is performed with clinical ultrasound machines that observe microbubbles that gradually opacify a plane. Even though the frame rates of these clinical ultrasound machines are often limited over time, their availability makes the implementation of ULM on these machines relevant. The exploitation of these acquisitions already made in clinical settings with ULM vision allows access to particularly interesting information about the vascularization of the adult and child brain, as well as the kidney.