STATE-OF-THE-ART POSITRON EMISSION TOMOGRAPH (PET) SCANN

L。承包商应提供正电子发射断层扫描(PET) 扫描系统是一个灵活、集成的产品包，由所有 采集和处理PET数据所需的组件，包括 带有探测器和屏蔽物的扫描仪机架，病床，电子设备， 前端计算机系统、主计算机系统、显示硬件 处理硬件，用于采集、重建的完整软件， 显示、处理和完整的文档。 A.该系统应能够产生数字重建的交叉- 同位素活度浓度的截面(2-D)和体积(3-D)图像 (以nci/cc为单位)对物理因素进行准确校正 与PET(衰减、随机重合、散射、死区时间、 不同的探测器效率、校准等)。 B.系统应采用最先进的设计，具有高检测率 效率和高空间分辨率，并能够执行 2-D和3-D的静态、动态和门控成像 C.数据采集和处理系统应设计为 简化常规扫描方案中扫描仪的使用，以 促进高吞吐量。此外，系统应提供 极大的灵活性和完整的文档，使 NIH的调查人员开发并方便地实施和集成 数据采集、重建和后处理的新算法。 2.承包商应通过以下方式使系统保持运行状态 保修或维护期间的二十四(24)小时响应时间 协议期。

l. The Contractor shall provide a positron emission tomography (PET) scanning system as a flexible, integrated package consisting of all of the components required for acquisition and processing of PET data, including a scanner gantry with detectors and shielding, a patient bed, electronics, a front-end computer system, a host computer system, display hardware, processing hardware, complete software for acquisition, reconstruction, display, and processing, and complete documentation. a. The system shall be capable of producing digital reconstructed cross- sectional (2-D) and volume (3-D) images of isotope activity concentration (in units of nCi/cc) with accurate corrections for the physical factors associated with PET (attenuation, random coincidences, scatter, deadtime, differing detector efficiencies, calibration, etc.). b. The system shall be of state-of-the-art design with high detection efficiency and high spatial resolution and be capable of performing static, dynamic, and gated imaging in 2-D and 3-D. c. The data acquisition and processing system shall be designed to streamline the use of the scanner for routine scanning protocols to facilitate high throughput. In addition, the system shall provide substantial flexibility and complete documentation to allow the investigators at NIH to develop and conveniently implement and integrate new algorithms for data acquisition, reconstruction, and post-processing. 2. The Contractor shall maintain the system in an operational status with twenty-four (24) hour response time during the warranty or maintenance agreement periods.