Automatic localization of the center of fiducial markers in 3D CT/MRI images for image-guided neurosurgery

Automatic localization of the center of fiducial markers in 3D CT/MRI images for image-guided neurosurgery
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用于图像引导神经外科手术的 3D CT/MRI 图像中基准标记中心的自动定位

DOI:
10.1016/j.patrec.2008.11.001
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发表时间:
2009-03
期刊:
Pattern Recognit. Lett.
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图像引导神经外科系统(IGNS)在颅内手术中发挥着重要作用。皮肤上的粘性标记广泛用于患者与图像的配准,这些标记的中心用作点对配准中的基准点。在本文中,我们提出了一种新的算法来自动定位这些标记的中心。该算法比较标记模型和来自患者头部的计算机断层扫描(CT)和磁共振成像(MRI)图像的表面贴片。这些中心的自动定位将有助于减少配准中的人为错误并加快配准过程。临床三维CT和MRI数据的实验证实,该算法可以准确地定位这些标记的中心。
Image-guided neurosurgery systems (IGNS) play an important role in intracranial surgery. Adhesive markers on the skin are widely used for patient-to-image registration, with the centers of these markers serving as fiducial points in point-pair registration. In this paper, we propose a novel algorithm to automatically locate the center of these markers. The algorithm compares the marker model and the surface patches from Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) images of the patient’s head. Automatic localization of these centers will help to reduce the human error in registration and speed up the registration process. Experiments with clinical 3D CT and MRI data confirm that this algorithm can accurately locate the centers of these markers.
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