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Automated high resolution, micro-angiographic fluoroscopy medical systems.

机译：自动化的高分辨率，微血管荧光透视医疗系统。

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摘要

The increased demand for improved quality in medical images due to the rapid advances in the field of endovascular image guided interventions (EIGI), motivated this work to deal with the design, construction and automation of higher resolution micro-angiographic and fluoroscopic x-ray medical systems. The factors which improve the quality of fluoroscopic and angiographic images are high spatial resolution, increased sensitivity of the detectors, negligible lag, wide dynamic range and high frame rates. The improved but at the same time more complex EIGIs require a system which implements all the improving image quality factors along with automation of the radiographic and fluoroscopic procedures. The control, acquisition, processing and image display system (CAPIDS) which has been designed and built to meet the above specifications is presented in this dissertation. CAPIDS is mainly used to control the novel Micro-Angiographic Fluoroscopy (MAF) detector which has been designed and built by our group at Toshiba Stroke Research Center of University at Buffalo. The high-sensitivity, region-of-interest (ROI) MAF detector which consists of a CsI(Tl) input phosphor, a dual stage micro-channel plate Light Image Intensifier (LII) coupled to a fiber optic taper (FOT) and a fast frame rate, progressive scan, frame-transfer CCD camera provides high-resolution images of 1k x 1k size and spatial resolution greater than 8 lp/mm. In addition to the control of the MAF detector, CAPIDS offers real time acquisition, processing and display of the high-resolution images in a unique user-friendly graphical interface. Furthermore, CAPIDS has been designed in such a way that allows it to be used with newer high-resolution detectors such as the ROI Solid State X-ray Image Intensifier (SSXII) detector and the larger field-of-view, array-based SSXII which both, have also been designed by our group. As a result, the use of CAPIDS along with the novel x-ray detectors should enable better visualization of details of small endovascular devices such as stents, coils, balloons, catheters and guide wires inside small vessels. This improved visualization along with the system readiness to operate under real-time clinical conditions in the angiography suite should enable more accurate diagnoses, as well as improve and speed-up the treatment of cerebrovascular diseases such as aneurysms and vessel stenoses. In addition, the user-friendly interface along with the CAPIDS well-implemented automation of the radiographic procedures should make conduct of complex EIGI for the radiologist or the interventionalist simpler.
机译：由于血管内图像引导干预（EIGI）领域的快速发展，对提高医学图像质量的需求不断增长，促使这项工作致力于更高分辨率的微血管造影和X射线透视医学设计，建造和自动化系统。改善荧光透视和血管造影图像质量的因素是高空间分辨率，检测器灵敏度提高，滞后可忽略不计，宽动态范围和高帧频。改进但同时更复杂的EIGI需要一种系统，该系统应实现所有改进的图像质量因素以及射线照相和荧光检查程序的自动化。本文设计并制造了满足上述要求的控制，采集，处理和图像显示系统（CAPIDS）。 CAPIDS主要用于控制由我们的团队在布法罗大学东芝中风研究中心设计和制造的新型微血管透视（MAF）检测器。高灵敏度，感兴趣区域（ROI）MAF检测器，由CsI（Tl）输入磷光体，与光纤锥度（FOT）耦合的双级微通道板光图像增强器（LII）和快速帧速率，逐行扫描，帧传输CCD相机可提供1k x 1k大小的高分辨率图像，且空间分辨率大于8 lp / mm。除了对MAF检测器的控制外，CAPIDS还通过独特的用户友好图形界面提供实时采集，处理和显示高分辨率图像。此外，CAPIDS的设计方式使其可以与更新的高分辨率探测器一起使用，例如ROI固态X射线图像增强器（SSXII）检测器和更大的基于阵列的视野的SSXII两者，也是我们小组设计的。因此，将CAPIDS与新颖的X射线检测器一起使用应该能够更好地可视化小型血管内设备的细节，例如小血管内的支架，线圈，气球，导管和导丝。这种改进的可视化效果以及系统在血管造影套件中可在实时临床条件下运行的就绪状态，应能实现更准确的诊断，并改善和加快脑血管疾病（如动脉瘤和血管狭窄）的治疗。此外，用户友好的界面以及CAPIDS射线照相程序的良好实现的自动化，应该使放射科医生或介入医生的复杂EIGI的操作更为简单。

著录项

  • 作者

    Keleshis, Christos M.;

  • 作者单位

    State University of New York at Buffalo.;

  • 授予单位 State University of New York at Buffalo.;
  • 学科 Engineering Biomedical.;Engineering Electronics and Electrical.;Engineering System Science.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 193 p.
  • 总页数 193
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;系统科学;无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:37:37

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