X-ray dual-mode imager comprising radiography and coherent scatter

X 射线双模式成像仪，包括射线照相和相干散射

• 批准号: RGPIN-2022-04893
• 负责人: Johns, Paul
• 金额: $ 1.28万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762499
• 关键词: ray; dual; mode; imager; comprising

Despite the advances in MRI (magnetic resonance imaging), nuclear medicine, and ultrasound, x-ray imaging continues to be a principal medical tool to look inside the body. Physics innovations and current detector technologies now allow x rays to be used in new ways to generate more information. These approaches can be used for other types of x-ray imaging, such as security inspection of packages. All medical x-ray imaging today uses the "primary" or transmitted x rays to form a "shadow" picture of the patient. Scattered x rays, however, comprise up to 90% of the radiation at the image receptor and are another information source. Our lab's focus is to develop an x-ray imaging system that uses scatter as well as primary. In recent years we have built a prototype scatter imaging system at the Canadian Light Source synchrotron in Saskatoon, and then a more practical system in our lab at Carleton University in Ottawa using a conventional x-ray source. We have investigated means to make the x-ray acquisition as fast as possible and have achieved scan times of a few minutes at the synchrotron and under 10 minutes with the conventional source. We will: (1) Apply our system to the imaging of bone and cartilage samples to better characterize bone health and diagnose osteoporosis. (2) Investigate ways to make a high-resolution conventional image at the same time as the scatter image. These innovations in x-ray imaging are commercializable and applicable beyond medicine to industrial nondestructive testing, to security imaging, and to all other areas in which x rays are shone through an object. We will seek further funding to help commercialize once the technologcal approach has been further refined.

尽管MRI（磁共振成像），核医学和超声波的进步，X射线成像仍然是一个主要的医疗工具，看看体内。物理学的创新和当前的探测器技术现在允许以新的方式使用x射线来产生更多的信息。这些方法可以用于其他类型的X射线成像，例如包装的安全检查。今天所有的医学X射线成像都使用“原始”或透射的X射线来形成患者的“阴影”图像。然而，散射的x射线包括图像接收器处高达90%的辐射，并且是另一个信息源。我们实验室的重点是开发一种X射线成像系统，使用散射以及主要。近年来，我们已经建立了一个原型散射成像系统在加拿大光源同步加速器在萨斯卡通，然后在我们的实验室在卡尔顿大学在渥太华使用传统的X射线源更实用的系统。我们已经研究了使X射线采集尽可能快的方法，并在同步加速器上实现了几分钟的扫描时间，而在常规源上则不到10分钟。我们将：（1）将我们的系统应用于骨和软骨样本的成像，以更好地表征骨健康和诊断骨质疏松症。(2)研究在散射图像的同时制作高分辨率常规图像的方法。 X射线成像的这些创新是可商业化的，并且适用于医学之外的工业无损检测、安全成像以及X射线照射穿过物体的所有其他领域。一旦技术方法得到进一步改进，我们将寻求进一步的资金，以帮助商品化。