... acoustic lenses can improve the performance of ultrasound beams targeting the brain by correcting for the effect of the skull. ... Doctors would first characterize a persons skull shape with CT and MRI scans and then 3D print the acoustic lens that yields ... Holograms to Focus Arbitrary Ultrasonic Fields through the Skull. Sergio Jiménez-Gambín, Noé Jiménez, José María Benlloch, and ... Holograms to Focus Arbitrary Ultrasonic Fields through the Skull. Sergio Jiménez-Gambín, Noé Jiménez, José María Benlloch, and ...