Figure 1

Experimental setup. (a) Coronal view of the experimental setup for the phantom study, where the yellow box indicates the 3D imaging volume and the white lines indicate the positions of the two 1-channel RF receive coils. Green, red, and blue lines indicate the positions of the three planes where the FUS was focused, and transverse views of these planes are shown in (b–d). In the transverse views of the three focal planes, (b–d), the solid red dots indicate the approximate mechanical focal positions, and solid green dots indicate the approximate electronically steered focal positions. Red and green rings indicate heatings “mirrored” from the left hemisphere to the right hemisphere. (e) Coronal view of the experimental setup for the lamb study, where the yellow box indicates the 3D imaging volume and the white lines indicate the positions of the two 2-channel RF receive coils. Green and red lines indicate the positions of the two planes where the FUS was focused, and transverse views of these planes are shown in (f) and (g). In the transverse views in (f) and (g), black crosses correspond to the transducer’s physical position, and the green dots correspond to the position of the electronically steered focal spot.