Computer-assisted neurosurgery by using a noninvasive vacuum-affixed dental cast that acts as a reference base: another step toward a unified approach in the treatment of brain tumors
Computer-assisted neurosurgery by using a noninvasive vacuum-affixed dental cast that acts as a reference base: another step toward a unified approach in the treatment of brain tumors
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DOI：
10.3171/jns.2000.93.2.0208
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发表时间：
2000-08-01
影响因子：
4.1
通讯作者：
Jaschke, W
中科院分区：
文献类型：
--
作者：
Bale, RJ;Burtscher, J;Jaschke, W
物体。该研究的目的是评价Vogele-Bale-Hohner(VBH)口罩在影像引导神经外科手术中用于患者图像配准和跟踪患者头部的应用。动态参照系(DRF)可重复地安装在话筒上。参考点的最佳分布和连接到牙套上，用于在手术前一天患者不在的情况下进行配准。在手术室里，牙套和DRF使用真空精确地重新定位，患者的解剖结构自动与图像上的相应结构配准。10例患者的实验研究和临床经验证实，在整个手术过程中，尽管患者进行了移动，但(刚体)重复定位的准确性在0-2 mm范围内。由于它与患者头部的非侵入性、刚性、可靠性和可重复性连接，VBH真空固定的口罩使登记设备具有与侵入性基准标记相当的准确性。
Object. The purpose of the study was to evaluate the use of the Vogele-Bale-Hohner (VBH) mouthpiece, which is attached to the patient's upper jaw by negative pressure, for patient-image registration and for tracking the patient's head during image-guided neurosurgery.Methods. A dynamic reference frame (DRF) is reproducibly mounted on the mouthpiece. Reference points, optimally distributed and attached to the mouthpiece, are used for registration in the patient's absence on the day before surgery. In the operating room, the mouthpiece and DRF are precisely repositioned using a vacuum, and the patient's anatomical structures are automatically registered to corresponding ones on the image. Experimental studies and clinical experiences in 10 patients confirmed repeated (rigid body) localization accuracy in the range of 0 to 2 mm, throughout the entire surgery despite movements by the patient.Conclusions. Because of its noninvasive, rigid, reliable, and reproducible connection to the patient's head, the VBH vacuum-affixed mouthpiece grants the registration device an accuracy comparable to invasive fiducial markers.