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    • 11. 发明公开
    • DYNAMIC SPECT CAMERA
    • 动态影像 - 卡梅拉
    • EP1952180A2
    • 2008-08-06
    • EP06809851.6
    • 2006-11-09
    • Spectrum Dynamics LLC
    • ROUSSO, BennyZIV, OmerNAGLER, MichaelBEN-HAIM, Shlomo
    • G01T1/161G01T1/166G01T1/29
    • G01T1/161A61B6/037G01T1/166G01T1/2985
    • A dynamic SPECT camera is provided, comprising, a plurality of single-pixel detectors, a timing mechanism, in communication with each single-pixel detector, configured for enabling time-binning of the radioactive emissions impinging upon each single-pixel detector to time periods not greater than substantially 30 seconds, and a position-tracker, configured for providing information on the position and orientation of each detecting unit, with respect to the overall structure, substantially at all times, during the individual motion, the dynamic SPECT camera being configured for acquiring a tomographic reconstruction image of a region of interest of about 15 X 15 X 15 cubic centimeters, during an acquisition time of 30 seconds, at a spatial resolution of at least 10 X 10 X 10 cubic millimeter. The dynamic camera is configured for very short damping time, and may further acquire images in a stationary mode, with no motion. It is further configured for time binning at dynamically varying time-bin lengths,dynamically determining a spectral energy bin for each detecting unit, and employing an anatomic construction of voxels in the imaging and reconstruction.
    • 提供了一种动态SPECT相机,包括多个单像素检测器,与每个单像素检测器通信的定时机构,其被配置为使得能够对入射到每个单像素检测器上的放射性发射器进行时分两倍 不大于大约30秒的位置跟踪器,以及位置跟踪器,被配置为基本上在各个运动期间总是提供关于整个结构的关于每个检测单元的位置和方向的信息,动态SPECT相机被配置 用于在30秒的获取时间内以至少10×10×10立方毫米的空间分辨率获取约15×15×15立方厘米的感兴趣区域的断层重建图像。 动态相机被配置为非常短的阻尼时间,并且可以在没有运动的情况下进一步在静止模式下获取图像。 它还被配置为在动态变化的时间段长度上进行时间分组,动态地确定每个检测单元的频谱能量仓,以及在成像和重构中采用体素的解剖结构。
    • 17. 发明公开
    • Radiography system
    • 伦琴-Anordnung。
    • EP0176314A2
    • 1986-04-02
    • EP85306633.0
    • 1985-09-18
    • PICKER INTERNATIONAL, INC.
    • Sones, Richard A.Tesic, Mike M.
    • A61B6/00G01T1/166
    • G01T1/166A61B6/06
    • A radiography system including a radiation source (X) and a detector array (D) spaced sufficiently from the source to accommodate the placement of a body between the source and detector array. A mechanism (L, M) is provided for scanning the detector array relative to the body while aligned with the radiation source. Power means actuates the source to direct radiation through the body towards the detector array during scanning. The detector array comprises a number of detector elements responsive to incident radiation to produce electrical signals indicative of the radiation. Circuitry (TD1, C, T) coupled to the detector array responds to the detector signals to generate an image representing internal structure of the body, as represented by the radiation emergent from the body. The detector array (D) comprises a plurality of individual detector elements arranged in a pattern of staggered columns, the array being scanned in a direction perpendicular to the columns. This geometry improves the resolving capability of the detector array in a direction parallel to the columns.
      Resolution in the direction perpendicular to the columns is improved by employment of time delay and integrate circuitry (TDl) which samples detector element outputs at successive increments of detector motion less than the width of a single detector element in the scanning direction.
    • 一种放射照相系统,包括辐射源(X)和与源极充分隔开的探测器阵列(D),以适应在源和检测器阵列之间放置物体。 提供了一种机构(L,M),用于在与辐射源对准的同时相对于身体扫描检测器阵列。 在扫描期间,功率装置致动源将辐射通过身体引向检测器阵列。 检测器阵列包括响应于入射辐射的多个检测器元件以产生指示辐射的电信号。 耦合到检测器阵列的电路(TD1,C,T)响应于检测器信号,以产生代表身体的内部结构的图像,如来自身体的辐射所表示的。 检测器阵列(D)包括以交错列的图案布置的多个单独检测器元件,阵列沿垂直于列的方向被扫描。 该几何提高了检测器阵列在平行于列的方向上的分辨能力。 通过使用时间延迟和积分电路(TDI)来提高垂直于列的方向的分辨率,该电路在检测器运动的连续增量下采样检测器元件的输出小于单个检测器元件在扫描方向上的宽度。