n the second test, the same 22Gauge medical needle is used to demonstrate the steering capability with MRI visual-ization. The bevel tip is rotated toward left before insertion.
T2-weighted fast spin echo (field of view 240mm,echo time 90ms, repetition time 3000ms, flip angle 90◦ ) illustrates the final needle shape and tip position. The same procedure is repeated for bevel right before insertion and the results are shown in Fig. 9. There is no visually identifiable interference during needle robot controlled insertion