Upright, Low-dose, High-resolution, 3D Breast CT

立式、低剂量、高分辨率、3D 乳腺 CT

基本信息

批准号：
10627825
负责人：
SRINIVASAN VEDANTHAM
金额：
$ 62.99万
依托单位：
UNIVERSITY OF ARIZONA
依托单位国家：
美国
项目类别：
财政年份：
2019
资助国家：
美国
起止时间：
2019-06-01 至 2025-05-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10627825
关键词：
3-Dimensional Acceleration Address Adjuvant Chemotherapy Arizona Benchmarking Benign Biomedical Engineering Breast Breast Cancer Detection Breast Microcalcification Breast-Conserving Surgery Categories Chest wall structure Clinical Clinical Trials Collaborations Data Dedications Development Diagnosis Diagnostic Diagnostic Imaging Diagnostic Sensitivity Digital Breast Tomosynthesis Digital Mammography Discrimination Disease Dose Early Diagnosis Electronics Eligibility Determination Emerging Technologies Enhancing Lesion Evaluation Feasibility Studies Future Generations Geometry Goals Image Information Systems Lesion Low Dose Radiation Malignant - descriptor Mammography Measurement Modality Modeling Monitor Multimodal Imaging Neoadjuvant Therapy Noise Operative Surgical Procedures Patients Performance Phase Physics Population Positioning Attribute Publications Radiation Dose Unit Radiology Specialty Reader Receiver Operating Characteristics Regional Anatomy Reporting Research Research Project Grants Resolution Risk Estimate Roentgen Rays Sampling Scanning Screening procedure Shapes State-of-the-Art Reviews Subgroup System Techniques Technology Three-Dimensional Imaging Tissues Translating Translational Research Universities Validation Visualization Woman X-Ray Computed Tomography X-Ray Medical Imaging breast cancer diagnosis breast density breast imaging calcification cancer imaging clinical decision-making clinical practice clinical translation cohort design diagnosis evaluation diagnostic accuracy high dimensionality imaging detector imaging system improved innovation malignant breast neoplasm next generation predicting response prospective prototype quantitative imaging quantum reconstruction recruit response screening simulation study characteristics tomography tool treatment planning treatment response tumor

项目摘要

ABSTRACT Dedicated breast CT can eliminate tissue superposition that contributes to false-positives and false- negatives, and alleviates the need for physical compression of the breast. It provides for 3D images at near-isotropic spatial resolution that allows for viewing the breast in any orientation without the need for repeat acquisitions. It is an emerging technology, with only about five teams conducting research, worldwide. In order to develop, evaluate, accelerate its clinical translation, and to facilitate the widespread clinical adaptation of this technology, we are collaborating with GE Global Research to develop an upright patient positioning geometry with advanced technological capabilities designed to eventually allow for breast cancer screening, in addition to diagnostic imaging. The technological advanced proposed include an x-ray imaging detector with reduced system (electronic) noise, data readout rates improved by a factor of at least 2, and improved spatial sampling (pixel pitch) by a factor of 2 or more; a short-scan acquisition trajectory with angular range not exceeding 270-degrees that will improve patient positioning; and, the use of model-based iterative reconstruction techniques. All these technological advances are focused on improving posterior coverage, reducing the radiation dose to the breast so that it is similar to a standard 2- view mammography exam, and improving the visualization of microcalcifications; all with an aim of making it suitable for breast cancer screening in the future. Importantly, the upright geometry allows for rapid clinical adaptation as it allows for easy replacement of mammography and digital breast tomosynthesis systems, even in small mammography rooms, and addresses the patient discomfort observed with the prone breast CT. The research is broadly organized in two phases. In the first phase, all design factors and operational parameters will be verified through physics-based numerical simulations and empirical studies using the bench-top prototype system. In the second phase, we will conduct a clinical feasibility study that will recruit subjects from two cohorts: BIRADS 4/5, and screening population, to determine if the advanced technological approach using the upright, low-dose, high-resolution dedicated breast CT system improves the diagnostic accuracy compared to digital breast tomosynthesis. To our knowledge, this will be first study to directly compare digital breast tomosynthesis with dedicated breast CT. Thus, the proposed research will develop an innovative design concept for unprecedented impact in breast cancer imaging that will enable breast imaging without physical compression and at radiation dose similar to mammography. To our knowledge a compression-free breast CT system incorporating the aforementioned features does not exist.

抽象的专用的乳房CT可以消除有助于假阳性和假阳性的组织叠加负面因素，并减轻需要对乳房进行物理压缩的需求。它提供了3D图像近乎异端的空间分辨率，可以在任何方向上查看乳房，而无需重复获取。这是一项新兴技术，只有大约五个团队进行研究，全世界。为了开发，评估，加速其临床翻译，并促进广泛的这项技术的临床适应，我们正在与GE Global Research合作开发直立具有高级技术能力的患者定位几何形状，旨在最终允许除诊断成像外，乳腺癌筛查。技术高级提议包括具有降低系统（电子）噪声的X射线成像检测器，数据读数率提高了一倍至少2个，并改善了空间采样（像素沥青）2倍或更多；短扫描的收购角度范围不超过270度的轨迹，可以改善患者定位；而且，使用基于模型的迭代重建技术。所有这些技术进步都集中在改善后覆盖范围，将辐射剂量减少到乳房，以便与标准2-相似查看乳房X线摄影检查并改善微钙化的可视化；所有目标是实现适用于将来的乳腺癌筛查。重要的是，直立的几何形状允许快速临床适应，因为它可以轻松替换乳房X线摄影和数字乳房合成系统，即使在小乳房X线摄影室，也可以解决俯卧乳房观察到的患者不适 CT。这项研究分为两个阶段。在第一阶段，所有设计因素和操作参数将通过基于物理学的数值模拟和经验研究来验证参数台式原型系统。在第二阶段，我们将进行临床可行性研究，以招募来自两个队列的受试者：Birads 4/5和筛查人口，以确定是否高级使用直立的低剂量，高分辨率专用乳房CT系统改进的技术方法与数字乳房合成相比，诊断精度。据我们所知，这将是首次研究直接将数字乳房断层合成与专用的乳房CT进行比较。因此，拟议的研究将开发一种创新的设计概念，以实现乳腺癌成像中前所未有的影响，这将使乳房成像无物理压缩和辐射剂量类似于乳房X线摄影。向我们知识不存在包含上述特征的无压缩乳房CT系统。