Development of Low-Cost CZT for Nuclear Imaging.

描述(申请人提供)：低成本CZT的开发 提出了改进的垂直Bridgman技术在杂交中的应用 高分辨率X射线和伽马射线成像相机的阵列，以及制造 心脏病的诊断，肿瘤的检测，遗传学，骨骼扫描， 荧光透视和认知神经科学。初步结果表明， 表现出极好的结晶质量，高电子阻率和 获得了电子和空穴的迁移率寿命产物，并 从SNL钢锭中随机选择(L-4)。像素化阵列制造于 TECHNION(5)具有优异的光谱性能。高分辨率照片 在没有任何脉冲处理或补偿技术的情况下观察到峰值。 光谱仪，工作在400V，实现在20x20x5mm3基片上，展示 122keV光子的3%分辨率，峰谷比极佳， 优良的计数效率和低泄漏电流。我们向未来求婚 研究、优化和发展CZT生长技术。我们相信这一点 开发将提供更大尺寸的晶圆(40x40x5mm3)和更高的产量 成本更低的CZT单晶，将是一个重大的进步 高分辨率室温伽马的经济可行性研究 用于核医学的照相机。 建议的商业应用： 由MVB技术生产的大尺寸CZT晶体需要用于 生产室温高分辨率固态成像相机。这个 所提出的技术有望提供更好的能量分辨率和低成本 替代目前的增长技术，如果成功，它将使广泛的 医疗应用的范围。这一发展也将带来新的机遇 将该技术用于环境监测、行李扫描和国家 安全应用程序。

DESCRIPTION (Provided by Applicant): Development of Low-Cost CZT grown by Modified Vertical Bridgman Technique is proposed for use in making hybrid arrays for high-resolution X-and gamma-ray imaging cameras, and making for diagnosis of heart disease, detection of tumors, genetics, bone scans, fluoroscopy, and cognitive neuroscience. Preliminary results are shown to exhibit excellent crystalline quality, high electron resistively and mobility-lifetime products for both electrons and holes have been obtained and selected at random from ingots at SNL (l-4). Pixilated arrays fabricated at Technion (5) exhibit excellent spectral performance. High-resolution photo peaks are observed without any pulse processing or compensation techniques. Spectrometers, operated at 400V, and realized on 20x20x5mm3 substrate, exhibit 3 percent resolution for l22keV photons with excellent peak-to valley ratio, excellent counting efficiency and low leakage current. We propose to future study, optimize and develop CZT growth technique. We believe that this development will provide larger size wafers (40x40x5 mm3) and higher yield of CZT single crystals with lower cost, and will represent a significant advance towards the economic feasibility of high-resolution room-temperature gamma cameras for nuclear medicine. PROPOSED COMMERCIAL APPLICATION: The proposed large-size CZT crystals produced by the MVB technique are needed for production of room-temperature high-resolution solid-state imaging cameras. The proposed technique is expected to provide better energy resolution and a low-cost alternative to the current growth technique, and if successful, it will enable a broad range of medical applications. This development will also open new opportunities for use of the technology for environmental monitoring, baggage scanning and national security applications.