An ultrasonic approach to localization of fiducial markers for interactive, image-guided neurosurgery--Part II: Implementation and automation.
An ultrasonic approach to localization of fiducial markers for interactive, image-guided neurosurgery--Part II: Implementation and automation.
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用于交互式图像引导神经外科手术的基准标记定位的超声波方法 - 第二部分：实施和自动化。
DOI：
10.1109/10.668754
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Muratore,DM
中科院分区：
文献类型：
--
作者：
Schreiner,S;GallowayJr,RL;Lewis,JT;Bass,WA;Muratore,DM
对于点。我见同上，第45卷，第5号，第620-30页(1998)。图像空间和物理空间的配准是任何交互式图像引导神经外科系统的核心。本文件与前一篇配套文件(pt.I)，描述了一种定位技术，该技术使得植入骨的基准标记能够用于这些空间的配准。这些皮下标记物的性质允许它们长期用于登记，这是外科随访、疗效监测和进行分次立体定向放射外科手术所需的。使用植入标记物的主要挑战是确定植入后标记物在物理空间中的位置。本文介绍的A型超声技术能够确定植入的小圆柱形标记的三维(3-D)位置。精确度测试是在一个代表人头的模型上进行的。通过比较用光学跟踪指示器确定的标记模拟的位置和用超声波定位确定的位置，来表征该系统的准确性。对模体进行多个方位的分析显示，平均系统精度为0.5 mm，a/SPL plusMN/0.1-mm 95%可信区间。这些测试表明，经皮定位植入的基准标记是可能的，并具有高度的准确性。
For pt. I see ibid., vol. 45, no. 5, p. 620-30 (1998). Registration of image space and physical space lies at the heart of any interactive, image guided neurosurgery system. This paper, in conjunction with the previous companion paper (pt. I), describes a localization technique that enables bone-implanted fiducial markers to be used for the registration of these spaces. The nature of these subcutaneous markers allows for their long-term use for registration which is desirable for surgical follow-up, monitoring of therapy efficacy, and performing fractionated stereotactic radiosurgery. The major challenge to using implanted markers is determining the location of the markers in physical space after implantation. The A-mode ultrasonic technique described here is capable of determining the three-dimensional (3-D) location of small implanted cylindrical markers. Accuracy tests were conducted on a phantom representing a human head. The accuracy of the system was characterized by comparing the location of a marker analogue as determined with an optically tracked pointer and the location as determined with the ultrasonic localization. Analyzing the phantom in several orientations revealed a mean system accuracy of 0.5 mm with a /spl plusmn/0.1-mm 95% confidence interval. These tests indicate that transcutaneous localization of implanted fiducial markers is possible with a high degree of accuracy.