FREEHAND STRAIN IMAGING WITH A 3D PROBE.

摘要

To generate a 3D axial strain image from a mechanically swept 3D probe moved in a freehand manner, using 3D windows for displacement tracking, in all three directions, 3D kernels for gradient estimation and true 3D normalisation of strain values, in as near real-time as is practical. It is possible to generate high quality 3D images of axial strain with very good resolution in all dimensions and fairly short processing times. The technique is fairly straightforward in practice-currently roughly one out of two acquisitions generate good strain images - due to the balance between generating a useful stress field over the volume and maintaining reasonable correlation of the data.