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），核医学和超声检查取得了进步，但X射线成像仍然是观察体内的主要医学工具。物理创新和当前检测器技术现在允许以新的方式使用X射线来生成更多信息。这些方法可用于其他类型的X射线成像，例如对软件包的安全检查。如今，所有医疗X射线成像都使用“主要”或发送的X射线来形成患者的“阴影”图片。然而，散射的X射线最多占图像受体的辐射的90％，是另一个信息来源。我们的实验室的重点是开发一个X射线成像系统，该系统既使用散射又主要。近年来，我们在萨斯卡通的加拿大光源同步器上建立了一个原型散点成像系统，然后使用常规的X射线源在渥太华的Carleton University的实验室中建立了一个更实用的系统。我们已经研究了尽可能快地进行X射线采集的方法，并在同步器上达到了几分钟的扫描时间，并且与常规源相距不到10分钟。我们将：（1）将我们的系统应用于骨骼和软骨样品的成像，以更好地表征骨骼健康并诊断骨质疏松症。 （2）研究与散点图像同时制作高分辨率常规图像的方法。 X射线成像中的这些创新是可商业化的，并且适用于医学以外的工业无损测试，用于安全成像，以及X射线通过物体发光的所有其他领域。一旦进一步完善了技术方法，我们将寻求进一步的资金来帮助商业化。