Fig. 4
From: An open-source phase correction toolkit for transcranial focused ultrasound
Reconstructed volume rendering of three skulls with their fixing frame. The volume of skull and fixing frame were reconstructed from CT volume images. The bottom, front and side view of three skull volume were shown in the figure. The visible fiducial points of skull A (seven points) were marked using red-doted circles. The variation of shape and surface curvature of each skull could be observed