Dual-energy X-ray computed tomography scanner using an energy-selecting device and a cadmium telluride detector
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- SATO Eiichi
- Department of Physics, Iwate Medical University
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- ITO Hitomi
- Department of Psychiatry and Neurology, School of Medicine, Iwate Medical University
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- ODA Yasuyuki
- Department of Physics, Iwate Medical University
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- HAGIWARA Osahiko
- Department of Surgery, Toho University Ohashi Medical Center
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- MATSUKIYO Hiroshi
- Department of Surgery, Toho University Ohashi Medical Center
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- ENOMOTO Toshiyuki
- Department of Surgery, Toho University Ohashi Medical Center
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- WATANABE Manabu
- Department of Surgery, Toho University Ohashi Medical Center
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- KUSACHI Shinya
- Department of Surgery, Toho University Ohashi Medical Center
Abstract
<p>Dual-energy photon counting was performed using an energy-selecting device (ESD) and a cadmium telluride detector. The ESD is used to determine a low-energy range for computed tomography (CT) and consists of two comparators and a microcomputer (MC). The two threshold energies are determined using low and high-energy comparators, respectively. The MC in the ESD produces a single logical pulse when only a logical pulse from the low-energy comparator is input to the MC. To determine the high-energy range, logical pulses from the high-energy comparator are input to the MC outside the ESD. Logical pulses from the two MCs are input to frequency-voltage converters (FVCs) to convert count rates into voltages. The output voltages from the two FVCs are sent to a personal computer through an analog-digital converter to reconstruct tomograms. Dual-energy CT was accomplished at a tube voltage of 70 kV and a maximum count rate of 4.5 kilocounts per second, and two-different-energy tomograms were obtained simultaneously using iodine media.</p>
Journal
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- Mechanical Engineering Journal
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Mechanical Engineering Journal 3 (6), 16-00308-16-00308, 2016
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390001205515560960
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- NII Article ID
- 130005250615
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- ISSN
- 21879745
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed