ROBOTIC CONTROL FOR DENTAL SUBTRACTION RADIOGRAPHY

拟议的长期研究是开发一种牙齿X光照相技术。 能够再现所需的成像几何图形。世界银行的目标是 建议的研究是开发一个原型系统并在DRY上进行测试 头骨。 获得专利的机器人控制系统(美国专利#5,113,424)能够 通过使用感测头部的3-D位置来再现图像几何 电磁传感器。已知的X射线源对牙齿成像几何学 允许它实时重新定位信号源，以实现所需的目标 成像几何学。以这种方式，可以再现成像几何 没有将病人机械连接到X光系统。 这种系统的优点是能够产生 整个口腔具有标准化的成像几何形状，可以单独使用或 用于减影X光检查以检测牙列的细微变化。一个 像这样的系统最终可以在临床医生的办公室到位。 拟议研究的目标是证明一种 机器人的原型控制X射线系统。有两个具体目标。 第一，开发机器人控制的X光手臂；第二，进行试验 用干燥的头骨来确定用这种方法制作的标准化胶片 系统是一种更准确的诊断工具。 为了实现第一个目标，将对X射线系统进行改装和一项研究 以确定手臂重新定位的精确度。至 实现第二个目标，将在干燥的头骨上拍摄X光片。在这 试验将机器人控制系统与减法系统进行比较 使用咬合支架。预期的结果是机器人控制 系统将产生更有诊断意义的射线照片和 减去图像。

The long term of the proposed research is to develop a dental radiography capable of reproducing a desired imaging geometry. The goals of the proposed research are to develop a prototype system and to test it on dry skulls. The patented robot control system (U.S. Patent #5, 113, 424) is capable of reproducing imagery geometry by sensing the 3-D position of the head using an electromagnetic sensor. A known X-ray source to tooth imaging geometry allows it to reposition the source in real-time to achieve this desired imaging geometry. In this way the imaging geometry can be reproduced without mechanical connection of the patient to the X-ray system. The advantage of such a system is the ability to produce radiographs of the entire mouth with a standardized imaging geometry that can used alone or for subtraction radiography to detect subtle change in the dentition. A system such as this can eventually be in place in a clinician's office. The goal of the proposed research is to demonstrate the feasibility of a prototype robot's controlled X-ray system. There are 2 specific aims. First, to develop a robot-controlled X-ray arm; second, to conduct trials with dry skulls, to determine if standardized films created with this system are a more accurate diagnostic tool. To achieve the first goal, an X-ray system will be modified and a study conducted to determine how accurately the arm can be repositioned. To achieve the second goal, radiographs will be taken on dry skulls. In this trial the robot control system will be compared to a subtraction system using occlusal stents. The anticipated outcome is that the robot control system will produce more diagnostically meaningful radiographs and subtraction images.