DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hyun-Sik | ko |
dc.contributor.author | Han, Sang-Wook | ko |
dc.contributor.author | Yang, Jun-Hyeok | ko |
dc.contributor.author | Kim, Sun-Il | ko |
dc.contributor.author | Kim, Young | ko |
dc.contributor.author | Kim, Sang-Wook | ko |
dc.contributor.author | Yoon, Dae-Kun | ko |
dc.contributor.author | Lee, Jun-Su | ko |
dc.contributor.author | Park, Jae-Chul | ko |
dc.contributor.author | Sung, Young-Hun | ko |
dc.contributor.author | Lee, Seong-Deok | ko |
dc.contributor.author | Ryu, Seung-Tak | ko |
dc.contributor.author | Cho, Gyu-Hyeong | ko |
dc.date.accessioned | 2013-08-08T05:44:30Z | - |
dc.date.available | 2013-08-08T05:44:30Z | - |
dc.date.created | 2013-03-19 | - |
dc.date.created | 2013-03-19 | - |
dc.date.created | 2013-03-19 | - |
dc.date.created | 2013-03-19 | - |
dc.date.issued | 2013-02 | - |
dc.identifier.citation | IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.48, no.2, pp.541 - 558 | - |
dc.identifier.issn | 0018-9200 | - |
dc.identifier.uri | http://hdl.handle.net/10203/174558 | - |
dc.description.abstract | This paper presents a direct photon-counting X-ray image detector with a HgI2 photoconductor for high-quality medical imaging applications. The proposed sampling-based charge preamplifier with asynchronous self-reset enables a pixel to detect single X-ray photon energy with higher sensitivity and faster processing rate. The use of the correlated double sampling enabled by the sampling-based architecture also reduces flicker noise and contributes to the achievement of high pixel-to-pixel uniformity. Discrimination of the energy level of the detected X-rays is performed by the proposed compact in-pixel ADC with low power consumption. Three 15-bit counters in each pixel count up energy-discriminated photons for the reconstruction of multi-spectral X-ray images. A 128 x 128 X-ray image detector with a pixel size of 60 x 60 mu m(2) is implemented and measured using a 0.13-mu m/0.35-mu m standard CMOS process. It discriminates 3 energy levels of photon energy with a gain of 107 mV/ke(-) and a static power consumption of 4.6.mu W/pixel. The measured equivalent noise charge (ENC) and minimum detectable energy level of the detector pixel are 68 e(-) rms and 290 e(-), respectively. The measured maximum threshold dispersion in the pixel array is 164e(-) rms without any calibration. The functionality of our chip is also successfully demonstrated using real X-ray images. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | An Asynchronous Sampling-Based 128 x 128 Direct Photon-Counting X-Ray Image Detector with Multi-Energy Discrimination and High Spatial Resolution | - |
dc.type | Article | - |
dc.identifier.wosid | 000314173500017 | - |
dc.identifier.scopusid | 2-s2.0-84873297090 | - |
dc.type.rims | ART | - |
dc.citation.volume | 48 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 541 | - |
dc.citation.endingpage | 558 | - |
dc.citation.publicationname | IEEE JOURNAL OF SOLID-STATE CIRCUITS | - |
dc.identifier.doi | 10.1109/JSSC.2012.2221196 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Hyun-Sik | - |
dc.contributor.localauthor | Ryu, Seung-Tak | - |
dc.contributor.localauthor | Cho, Gyu-Hyeong | - |
dc.contributor.nonIdAuthor | Han, Sang-Wook | - |
dc.contributor.nonIdAuthor | Kim, Sun-Il | - |
dc.contributor.nonIdAuthor | Kim, Young | - |
dc.contributor.nonIdAuthor | Kim, Sang-Wook | - |
dc.contributor.nonIdAuthor | Yoon, Dae-Kun | - |
dc.contributor.nonIdAuthor | Lee, Jun-Su | - |
dc.contributor.nonIdAuthor | Park, Jae-Chul | - |
dc.contributor.nonIdAuthor | Sung, Young-Hun | - |
dc.contributor.nonIdAuthor | Lee, Seong-Deok | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | ADC | - |
dc.subject.keywordAuthor | arrays | - |
dc.subject.keywordAuthor | CMOS | - |
dc.subject.keywordAuthor | detectors | - |
dc.subject.keywordAuthor | image sensors | - |
dc.subject.keywordAuthor | photoconductor | - |
dc.subject.keywordAuthor | photon counting | - |
dc.subject.keywordAuthor | photonics | - |
dc.subject.keywordAuthor | preamplifiers | - |
dc.subject.keywordAuthor | sampling-based circuits | - |
dc.subject.keywordAuthor | switches | - |
dc.subject.keywordAuthor | x-ray imaging | - |
dc.subject.keywordAuthor | ADC | - |
dc.subject.keywordAuthor | arrays | - |
dc.subject.keywordAuthor | CMOS | - |
dc.subject.keywordAuthor | detectors | - |
dc.subject.keywordAuthor | image sensors | - |
dc.subject.keywordAuthor | photoconductor | - |
dc.subject.keywordAuthor | photon counting | - |
dc.subject.keywordAuthor | photonics | - |
dc.subject.keywordAuthor | preamplifiers | - |
dc.subject.keywordAuthor | sampling-based circuits | - |
dc.subject.keywordAuthor | switches | - |
dc.subject.keywordAuthor | x-ray imaging | - |
dc.subject.keywordAuthor | ADC | - |
dc.subject.keywordAuthor | arrays | - |
dc.subject.keywordAuthor | CMOS | - |
dc.subject.keywordAuthor | detectors | - |
dc.subject.keywordAuthor | image sensors | - |
dc.subject.keywordAuthor | photoconductor | - |
dc.subject.keywordAuthor | photon counting | - |
dc.subject.keywordAuthor | photonics | - |
dc.subject.keywordAuthor | preamplifiers | - |
dc.subject.keywordAuthor | sampling-based circuits | - |
dc.subject.keywordAuthor | switches | - |
dc.subject.keywordAuthor | x-ray imaging | - |
dc.subject.keywordPlus | INVERSION CHARGE INJECTION | - |
dc.subject.keywordPlus | PIXEL READOUT CHIP | - |
dc.subject.keywordPlus | SWITCHES | - |
dc.subject.keywordPlus | CIRCUIT | - |
dc.subject.keywordPlus | WORKING | - |
dc.subject.keywordPlus | SIGNALS | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | MODE | - |
dc.subject.keywordPlus | INVERSION CHARGE INJECTION | - |
dc.subject.keywordPlus | PIXEL READOUT CHIP | - |
dc.subject.keywordPlus | SWITCHES | - |
dc.subject.keywordPlus | CIRCUIT | - |
dc.subject.keywordPlus | WORKING | - |
dc.subject.keywordPlus | SIGNALS | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | MODE | - |
dc.subject.keywordPlus | INVERSION CHARGE INJECTION | - |
dc.subject.keywordPlus | PIXEL READOUT CHIP | - |
dc.subject.keywordPlus | SWITCHES | - |
dc.subject.keywordPlus | CIRCUIT | - |
dc.subject.keywordPlus | WORKING | - |
dc.subject.keywordPlus | SIGNALS | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | MODE | - |
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