Spectroscopic X-ray imaging with photon counting pixel detectors
Spectroscopic X-ray imaging with photon counting pixel detectors
复制标题
使用光子计数像素探测器进行光谱 X 射线成像
DOI：
10.1016/j.nima.2010.02.088
复制
发表时间：
2010
影响因子：
1.4
通讯作者：
L. Tlustos
中科院分区：
文献类型：
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作者：
L. Tlustos
单粒子计数混合像素检测器同时提供低噪声、高粒度和高读出速度，并且使得能够构建提供高空间分辨率与良好能量分辨率配对的检测器系统。这种检测器系统的光谱性能的限制因素是检测器的传感器部分中的相邻像素之间的电荷共享。当使用平面分段传感器几何形状时，读出电子器件的收集电极处的信号光谱显著偏离光子光谱。Medipix3实现了一种新型的分布式信号处理架构，将相邻像素连接起来，旨在消除传感器中因电荷共享而产生的光谱失真，并减少传感器本身产生的荧光光子的影响。本文介绍了第一个将Medipix3读出器凸点键合到300μm硅传感器上的初步结果。材料重建是光谱成像探测器的一个可能的未来应用，并给出了一个小动物成像中的材料重建的例子。
Single particle counting hybrid pixel detectors simultaneously provide low noise, high granularity and high readout speed and make it possible to build detector systems offering high spatial resolution paired with good energy resolution. A limiting factor for the spectroscopic performance of such detector systems is charge sharing between neighbouring pixels in the sensor part of the detector. The signal spectrum at the collection electrodes of the readout electronics deviates significantly from the photonic spectrum when planar segmented sensor geometries are used. The Medipix3 implements a novel, distributed signal processing architecture linking neighbouring pixels and aims at eliminating the spectral distortion produced in the sensor by charge sharing and at reducing the impact of fluorescence photons generated in the sensor itself. Preliminary results from the very first Medipix3 readouts bump bonded to 300μm Si sensor are presented. Material reconstruction is a possible future application of spectroscopic imaging detectors and an example of material reconstruction in small animal imaging is given.
DOI：
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发表时间：
2004
期刊：
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated A518
影响因子：
--
作者：
神谷庄司;本田直子;ポールオリバー;ルターパトリック;坂真澄;Ch.Bronnimann;B.Schmitt
通讯作者：
B.Schmitt