| 摘要 |
PROBLEM TO BE SOLVED: To provide a CT scanner that can capture high-quality signals without being affected by external radiation and that realizes an integraged hybrid circuit by attaching various elements to the substrate so as to form a one body. SOLUTION: The CT scanner consists of a reconstruction processor that reconstructs an image from digital signals detector arrays 20. Each detector array consists of scintillation crystals 22 arranged in an array converts X-ray radiation into visible light. An array of photo detectors 24 mounted under the scintillation crystal array converts light from the scintillation crystals into electric charge. The electric charges generated by each light detector is stored alternately by a corresponding pair of charge storage devices. One of the pair operates as a double-buffer that retains the stored charge until retrieve by a following circuit while the other stores the charge. The array of scintillation crystal 22, the photodetector array 20, a plurality of amplifiers and an analogue- digital converter are integrally formed on the substrate.
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