Results 41 to 50 of about 944,632 (294)

Understanding Photon-Counting CT: Physics, Detector Technology, and Image Reconstructions

Sensors
Photon-counting computed tomography (PCCT) represents a detector-level transformation in CT imaging. Unlike conventional energy-integrating detectors, photon-counting detectors directly convert individual X-ray interactions into electrical pulses and ...
Arosh Shavinda Perera Molligoda Arachchige, Fatemeh Darvizeh   +1 more
doaj   +1 more source

Direct Measurement of Non-Classical Photon Statistics with a Multi-Pixel Photon Counterb

Journal of Electronic Science and Technology, 2019
Photon number resolving detectors with high accuracy bring broad applications in long-distance laser ranging, ultrafast spectroscopy, and quantum optics.
Cheng-Jie Ding, You-Ying Rong, Yu Chen, Xiu-Liang Chen, E Wu   +4 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Research on Single Photon Laser Communication Detection and Receiving Technology Based on Baseband Pulse Sampling

IEEE Photonics Journal
To realize the efficient transmission of deep space communication, single photon detection technology is used to overcome the signal attenuation and noise problems in long-distance transmission.
Yapei Sheng, Min Zhang, Jiao Dong, Ziyi Gao, Li Xu, Peng Lin, Keyan Dong, Xiaonan Yu   +7 more
doaj   +1 more source

Superconducting single-photon detectors fabricated via a focused electron beam-induced deposition process

AIP Advances, 2023
Superconducting detectors have become essential devices for high-performance single-photon counting over a wide wavelength range with excellent time resolution.
Stephan Steinhauer, Adrian Iovan, Samuel Gyger, Val Zwiller   +3 more
doaj   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

An energy-resolving photon-counting X-ray detector for computed tomography combining silicon-photomultiplier arrays and scintillation crystals

Communications Engineering
X-ray photon-counting computed tomography (PCCT) has garnered considerable interest owing to its low-dose administration, high-quality imaging, and material decomposition characteristics.
Kenji Shimazoe, Donghwan Kim, Moh Hamdan, Yosuke Kobayashi, Kei Kamada, Masao Yoshino, Yasuhiro Shoji, Kyohei Sakamoto, Fabio Acerbi, Alberto Gola   +9 more
doaj   +1 more source

Photon Counting: Detectors and Applications

Journal of Medical Imaging
The editorial introduces the special issue on photon counting detectors and applications.
La Riviere, Patrick J., Das, Mini
openaire   +3 more sources

Analogous Lubberts effect in photon counting detectors [PDF]

Medical Imaging 2020: Physics of Medical Imaging, 2020
For a light burst generated by an x ray-scintillator interaction, the quasi-isotropic spreading of optical quanta determines that both the light collection efficiency and the spread function of the light burst depend on the depth (z) of interaction: the closer the initial position of light burst to the light sensor, the less light loss and spatial ...
openaire   +2 more sources

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source