ABSTRACT A low-noise current-sensitive preamplifier was developed for aiming low-dose X-ray computed tomography with applying a charge-sensitive preamplifier. We compared the number of X-ray photons needed for current measurement with the new preamplifier with that needed with a conventional preamplifier. Also, the dose rates for above conditions were measured by a commercial dose rate meter. Results show that the new preamplifier reduced the number of X-ray photons needed by two orders of magnitude compared with the conventional one.

中文翻译：

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一种应用电荷敏感前置放大器的用于 X 射线计算机断层扫描的低噪声电流敏感前置放大器

摘要开发了一种低噪声电流敏感前置放大器，用于通过应用电荷敏感前置放大器来瞄准低剂量 X 射线计算机断层扫描。我们将使用新型前置放大器进行电流测量所需的 X 射线光子数量与使用传统前置放大器所需的 X 射线光子数量进行了比较。此外，上述条件下的剂量率是通过商业剂量率计测量的。结果表明，与传统前置放大器相比，新型前置放大器减少了两个数量级所需的 X 射线光子数量。