Real-Time Tumor Tracking for Four-Dimensional Computed Tomography Using SQUID Magnetometers

被引：28
|
作者：
McGary, John E. [1 ]
机构：
[1] Baylor Coll Med, Houston, TX 77030 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 09期
关键词：
Image-guided therapy; localization; magnetic dipole; magnetic tracking; MAGNETIC TRACKING; ORGAN MOTION; RADIOTHERAPY; LUNG;
D O I：
10.1109/TMAG.2009.2020430
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a method for real-time tumor tracking in external beam radiotherapy using superconducting quantum interference device (SQUID) magnetometers. The objective is to develop a localization algorithm and determine a cost effective sensor configuration that is capable of long-range localization, similar to 1000 mm, with an accuracy of 1-2 mm. We developed several algorithms to calculate the location of a magnetic dipole for geometry relevant for four-dimensional computed tomography (4DCT) to investigate sensor configuration and accuracy. We determined that two cube detectors, located diametrically opposite, are a feasible design for the localization system.
引用
收藏
页码：3351 / 3361
页数：11
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