MRI-guided needle steering for targets in motion based on Fiber Bragg Grating sensors

摘要: The diagnosis and percutaneous treatment of prostate cancer require clinicians to accurately place needles into tissue. However, the clinical targets often do not remain fixed while inserting due displacement deformation prostate. For magnetic resonance imaging (MRI) guidance, we developed a needle-steering method that enables reaching moving inside A surgical needle with integrated Fiber Bragg Grating (FBG) sensors was designed reconstruct actual shape during insertion in computer-assisted navigation system. original for is presented its deficiency discussed. Experimental results suggest using method, one can targets, but positioning error considerably increased if target moved. In this study, improved compensate inevitable tissue displacements. experimental show user reduce target. particular, improvement accuracy steering operated by novice illustrates both efficacy user-friendliness proposed method.