作者: Troy K. Adebar , Allison M. Okamura
DOI: 10.1007/978-3-642-38568-1_7
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摘要: A method for segmenting the 3D shape of curved needles in solid tissue is described. An actuator attached to needle outside vibrates at frequencies between 600 Hz and 6500 Hz, while power Doppler ultrasound imaging applied detect resulting motion shaft surrounding tissue. The cross section vibrating detected across series 2D images produced by a mechanical transducer, reconstructed fitting curve points. sensitivity segmentation accuracy composition, vibration frequency, pulse repetition frequency (PRF) was examined. Comparison with manual demonstrates that this results an average error 1.09 mm ex vivo This may be useful future providing feedback on control robotic steering systems.