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IBEX Virtual Anti-Scatter Grid Detector

IBEX 虚拟抗散射网格探测器

基本信息

批准号：
720708
负责人：
金额：
$ 23.06万
依托单位：
IBEX INNOVATIONS LTD
依托单位国家：
英国
项目类别：
GRD Development of Prototype
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=720708
关键词：
IBEX Virtual Anti Scatter Grid

项目摘要

IBEX Innovations (IBEX) has successfully demonstrated, in an InnovateUK PoC project, thepotential for its virtual anti-scatter grid (VASG) concept to improve diagnostic quality andsignificantly reduce patient dose in medical radiological examinationsPhysical anti-scatter grids (ASGs) are extensively used in medical X-ray imaging to reduce thelevels of unwanted X-ray scatter reaching the detector and are essential to achieve diagnosticquality images, especially on thicker body parts such as the torso, head and breast. However,as well as blocking unwanted scatter, physical ASGs also absorb a significant proportion ofuseful direct X-rays and result in patient doses being increased by between a factor of 2x and8x to achieve acceptable images.By contrast, the proposed IBEX Virtual Anti-Scatter Grid (VASG), takes materials datagenerated by the IBEX Multi Absorption Plate (MAP) and advanced IBEX softwarealgorithms and uses it to deconvolve the scattered X-ray component, utilising the scattered Xraydata to improve image contrast without the need for a physical ASG.By usefully employing more of the available X-ray photons to create an image instead of justblocking unwanted scatter with a physical ASG, the VASG is expected to generate improvedcontrast at significantly lower patient doses, whilst further improving the sensitivity of theIBEX materials classification, leading to further improvements in the diagnostic value ofradiographic examinations.The VASG concept relies fundamentally upon the IBEX materials classification technologysuccessfully developed under a previous InnovateUK DoP project, and has been shown towork in a PoC project which completed in July 2015.

IBEX Innovations （IBEX）在InnovateUK PoC项目中成功展示了其虚拟反散射网格（VASG）概念的潜力，以提高医学放射检查中的诊断质量并显着降低患者剂量。物理反散射网格（asg）广泛用于医学x射线成像，以减少到达探测器的不必要x射线散射水平，对于实现诊断质量的图像至关重要。尤其是在身体较厚的部位，如躯干、头部和乳房。然而，除了阻挡不必要的散射外，物理ASGs还吸收了很大一部分有用的直接x射线，导致患者剂量增加2倍到8倍，以获得可接受的图像。相比之下，提出的IBEX虚拟反散射网格（VASG）采用IBEX多吸收板（MAP）和先进的IBEX软件算法生成的材料数据，并使用它对散射x射线成分进行反卷积，利用散射x射线数据来提高图像对比度，而无需物理ASG。通过有效地利用更多可用的x射线光子来创建图像，而不仅仅是用物理ASG阻挡不必要的散射，VASG有望在显着降低患者剂量的情况下产生更好的对比度，同时进一步提高ibex材料分类的灵敏度，从而进一步提高放射学检查的诊断价值。VASG概念从根本上依赖于IBEX材料分类技术，该技术是在之前的InnovateUK DoP项目下成功开发的，并已在2015年7月完成的PoC项目中得到证实。