Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Keedong Yang"'
Publikováno v:
IEEE Sensors Journal. 21:18656-18662
This paper describes a study on a novel X-ray detector with photoinduced discharge (PID) readout devices. Especially, we demonstrated optical scanning X-ray imaging devices based on intrinsic hydrogenated amorphous silicon (i-a-Si:H) PID readout laye
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 784:565-569
Digital flat panel imager (FPI)-based cone-beam computed tomography (CBCT) has been widely used in C-arm imaging for spine surgery and interventional procedures. The system provides real-time fluoroscopy with high spatial resolution and three-dimensi
Autor:
Keedong Yang, Byeonghun Lee, William Y. Song, Bo Kyung Cha, Young Huh, Chang Woo Seo, Bongyong Song, Justin C. Park, Seongchae Jeon
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 765:280-284
The projection number, acquisition time, radiation dose, and full and 2×2 binning modes of the thin film transistor (TFT) X-ray imaging detector were evaluated for image quality in a prototype cone-beam computed tomography (CBCT) built for medical a
Vapor transport deposition of large‐area polycrystalline CdTe for radiation image sensor application
Publikováno v:
physica status solidi c. 11:1341-1344
Vapor transport deposition (VTD) process delivers saturated vapor to substrate, resulting in high-throughput and scalable process. In addition, VTD can maintain lower substrate temperature than close-spaced sublimation (CSS). The motivation of this w
Publikováno v:
Journal of the Korean Physical Society. 64:30-35
To generate a plasma light source with a small spot size by reducing the expansion of the plasma plume, we studied the plume expansion dynamics of a plasma generated from a dot target that consisted of a photoresist with a hole coated on a pure Al pl
Autor:
Ryun Kyung Kim, Bo Kyung Cha, Keedong Yang, Cho Rong Kim, Sungchae Jeon, Young Huh, Chang Woo Seo, William Youngjae Song, Justin C. Park, Bongyong Song
Publikováno v:
Journal of the Korean Physical Society. 64:129-134
This paper describes the development of a prototype cone-beam computed tomography (CBCT) system for clinical use. The overall system design in terms of physical characteristics, geometric calibration methods, and three-dimensional image reconstructio
Autor:
Seongchae Jeon, Seok-Min Yong, Byung Tae Ahn, Chang-Woo Seo, Bo Kyung Cha, Cho Rong Kim, TaeBum Lee, Duchang Heo, Keedong Yang, Ryun Kyung Kim, Eun Seok Cha
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 731:320-324
We introduce polycrystalline cadmium telluride (CdTe) with high atomic number and density, low effective energy and wide band gap for application in large area diagnostic X-ray digital imaging. In this work, polycrystalline CdTe films were fabricated
Autor:
J. H. Kim, Min-Seok Shin, Bo Kyung Cha, Cho Rong Kim, Duchang Heo, Seongchae Jeon, Oh-Kyung Kwon, Chang-Woo Seo, TaeBum Lee, Keedong Yang, Ryun Kyung Kim
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 731:315-319
This paper introduces complementary metal-oxide semiconductor (CMOS) active pixel sensor (APS)-based X-ray imaging detectors with high spatial resolution for medical imaging application. In this study, our proposed X-ray CMOS imaging sensor has been
Publikováno v:
Semiconductor Science and Technology. 17:R11-R19
The tunable bandgap semiconductor mercury cadmium telluride (MCT) is by far the most efficient detector in the 3–5 μm mid-wave infrared (MWIR) and 8–14 μm long-wave infrared (LWIR) wave bands. It is the current material of choice for high-perfo
Publikováno v:
Japanese Journal of Applied Physics. 43:L1617-L1619
1/f noise characteristics of hydrogenated HgCdTe photodiode have been investigated. The hydrogenated diodes have better 1/f noise characteristics than typical ion implanted or plasma-induced junction diodes. In order to investigate the origin of the