PURPOSE Accurate and efficient guidance of medical devices to procedural targets lies at the heart of interventional procedures. Ultrasound imaging is commonly used for device guidance, but determining the location of the device tip can be challenging. Various methods have been proposed to track medical devices during ultrasound-guided procedures, but widespread clinical adoption has remained e...

Photoacoustic imaging is a non-destructive method to obtain information about the distribution of optically absorbing structures inside a semitransparent medium. It is based on thermoelastic generation of ultrasonic waves by the absorption of a short laser pulse inside the sample. From the ultrasonic waves measured outside the object, the interior distribution of absorbed energy is reconstructe...

Abstract Ultrasonic tomography, which is widely used in the study of fracturing process rocks, often exhibits low resolution due to insufficient ray coverage, particularly while evaluating three-dimensional (3D) fractures. To resolve this issue, we adopted sparseness regularisation tomography reconstruct ultrasonic velocity rocks. Both numerical and laboratory experiments demonstrate that with ...