Search Results - "Steadman, Roger"

ChromAIX2: A large area, high count-rate energy-resolving photon counting ASIC for a Spectral CT Prototype by Steadman, Roger, Herrmann, Christoph, Livne, Amir

“…Spectral CT based on energy-resolving photon counting detectors is expected to deliver additional diagnostic value at a lower dose than current…”
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ChromAIX: Fast photon-counting ASIC for Spectral Computed Tomography by Steadman, Roger, Herrmann, Christoph, Mülhens, Oliver, Maeding, Dale G.

“…X-ray attenuation properties of matter (i.e. human body in medical Computed Tomography) are energy and material dependent. This dependency is largely neglected…”
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Pulse Temporal Splitting in Photon Counting X-Ray Detectors by Engel, Klaus Jürgen, Steadman, Roger, Herrmann, Christoph

“…We performed Monte-Carlo simulations of X-ray interactions and charge transport within a photon counting cadmium zinc telluride (CZT) detector. We study…”
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Issues of Ohmic Contacts in Human Medical Photon-Counting CT Detectors by Herrmann, Christoph, Blevis, Ira, Steadman, Roger, Livne, Amir

“…Human medical computed tomography (CT) detectors based on photon-counting have to support high photon event rates and at the same time must not polarize…”
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Band Gap Variation and Trap Distribution in Transparent Garnet Scintillator Ceramics by Wieczorek, Herfried, Khanin, Vasilii, Ronda, Cees, Boerekamp, Jack, Spoor, Sandra, Steadman, Roger, Venevtsev, Ivan, Chernenko, Kirill, Tukhvatulina, Tansu, Vrubel, Ivan, Meijerink, Andries, Rodnyi, Piotr

“…This article outlines the main results of a research and development cooperation between Philips Research Eindhoven; Peter the Great St. Petersburg Polytechnic…”
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Status of Direct Conversion Detectors for Medical Imaging With X-Rays by Overdick, M., Baumer, C., Engel, K.J., Fink, J., Herrmann, C., Kruger, H., Simon, M., Steadman, R., Zeitler, G.

“…Imaging detectors for medical X-ray and computed tomography (CT) applications have undergone many improvements and technology changes over time. But most…”
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Correction to "Status of Direct Conversion Detectors for Medical Imaging With X-Rays" [Aug 09 1800-1809] by Overdick, Michael, Bäumer, Christian, Engel, Klaus Jürgen, Fink, Johannes, Hermann, Christoph, Krüger, Hans, Simon, Matthias, Steadman, Roger, Zeitler, Günter

“…In the above titled paper (ibid., vol. 56, no. 4, pp. 1800-1809, Aug. 09), an error appeared in Table III. A corrected version of Table III is presented here…”
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Design and test of an integrated Sigma–Delta analog-to-digital converter for X-ray Computed Tomography by Bäumer, Christian, Gnade, Michael, Kemna, Armin, Steadman, Roger, Vogtmeier, Gereon, Weiler, Dirk

“…Aiming at a compact, cost-effective data readout for X-ray CT, a monolithic approach is presented where photosensor and parts of the analog-to-digital…”
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Testing an Energy-Dispersive Counting-Mode Detector With Hard X-Rays From a Synchrotron Source by Baumer, C., Martens, G., Menser, B., Roessl, E., Schlomka, J.-P., Steadman, R., Zeitler, G.

“…A counting-mode line detector has been evaluated at a synchrotron radiation source in order to assess its performance for imaging applications. The x-ray…”
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ChromAIX: Fast energy resolved photon-counting readout electronics for future human Computed Tomography by Herrmann, C, Steadman, R, Mulhens, O

“…ChromAIX is an ASIC for fast single photon-counting designed to study the feasibility of energy-resolved photon-counting human Spectral CT. It allows for…”
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A CMOS photodiode array with in-pixel data acquisition system for computed tomography by Steadman, R., Serrano, F.M., Vogtmeier, G., Kemna, A., Oezkan, E., Brockherde, W., Hosticka, B.J.

“…A CMOS photodetector array with in-pixel electronics has been developed for computed tomography (CT) applications. Current CT detectors are based on two…”
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A high dynamic range current-mode amplifier for computed tomography by Steadman, R., Vogtmeier, G., Kemna, A., Quossai, S.E.I., Hosticka, B.J.

“…In this paper, we show a high dynamic range current-mode detector for computed tomography application. A regulated current mirror structure has been…”
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Pulse splitting in photon counting X-ray detectors by Engel, K. J., Steadman, R., Herrmann, C.

“…We performed Monte-Carlo simulations of X-ray interactions and charge transport within a photon counting CZT detector. We study various physical processes…”
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Towards direct conversion detectors for medical imaging with X-rays by Overdick, Michael, Baumer, Christian, Engel, Klaus Jurgen, Fink, Johannes, Herrmann, Christoph, Kruger, Hans, Simon, Matthias, Steadman, Roger, Zeitler, Gunter

“…Imaging detectors for medical X-ray and Computed Tomography (CT) applications have undergone many improvements and technology changes over time. But most…”
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An In-Pixel Current-Mode Amplifier for Computed Tomography by Steadman, R., Vogtmeier, G., Kemna, A., Quossai, S.E.I., Hosticka, B.J.

“…A high-dynamic-range current-mode detector for a computed-tomography application is shown. A regulated current-mirror structure that provides a 17-bit dynamic…”
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Design and Evaluation of a CMOS-Photosensor with In-Pixel Sigma-Delta Modulator for X-ray Computed Tomography by Baumer, C., Eick, S., Steadman, R., Vogtmeier, G., Gnade, M., Kemna, A., Weiler, D.

“…A multichannel SigmaDelta-type analog-to-digital converter has been designed for data readout in CT scanners. A test-structure with a 4 times 4 photodetector…”
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A high dynamic range, high linearity CMOS current-mode image sensor for computed tomography by Steadman, R., Vogtmeier, G., Kemna, A., Quossai, S.I., Hosticka, B.J.

“…In this work, we show a high dynamic range current-mode detector for computer tomography application. A regulated current mirror structure has been implemented…”
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