Berry Julie, O'Malley Bert W, Humphries Steve, Staecker Hinrich
Department of Otolaryngology-Head and Neck Surgery, University of Maryland Medical Center, Baltimore, Maryland 21201, USA.
Ann Otol Rhinol Laryngol. 2003 Aug;112(8):689-92. doi: 10.1177/000348940311200807.
Use of image-guided surgery is becoming increasingly common in both sinus surgery and neuro-otologic applications. The purpose of this study was to determine the effect of fiducial distribution and mean fiducial error on point accuracy. Using a plastic model, we determined that optimal navigation accuracy was achieved by surrounding the operative target with a widespread field of fiducials. True accuracy was always highest when we targeted a surface point. Accuracy was decreased at points removed from the center of the registration target zone created by the fiducials. Inaccurate registration resulted in increased mean fiducial error and lower accuracy at the target point. Understanding the registration process will enhance the utility of image-guided surgery in otolaryngology and skull base surgery.
图像引导手术在鼻窦手术和神经耳科应用中越来越普遍。本研究的目的是确定基准点分布和平均基准点误差对点准确性的影响。我们使用一个塑料模型确定，通过在手术目标周围设置广泛的基准点区域可实现最佳导航准确性。当我们将目标设定为表面点时，真实准确性总是最高的。在从基准点创建的配准目标区域中心移开的点处，准确性会降低。不准确的配准会导致平均基准点误差增加，目标点处的准确性降低。了解配准过程将提高图像引导手术在耳鼻喉科和颅底手术中的效用。
