Novel nanocrystalline Gd2O3(Eu) scintillator screens with a micro-pixel structure for high spatial resolution X-ray imaging

Kyung, Bo; Lee, Seung Jun; Muralidharan, P.; Kim, Do Kyung; Kim, Jong Yul; Cho, Gyuseong; Jeon, Seok-Gy; Huh, Yong Min

doi:10.1016/j.nima.2011.01.024

Cited by 14 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22 Indeed, micropatterned self-guiding scintillator layers could reduce the crosstalk between the active layer and the underlying detector arrays. [23][24][25][26] Therefore, functional micro-or nanoparticles with idoneous surface chemistry could pave the way towards the additive manufacturing of such materials, making them possibly suitable for several applications including scintillator detectors with improved spatial resolution. Like for lead halide perovskites, the stability of halide scintillator materials is often affected by their hygroscopicity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

Fellener

Lauria

2022

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

Fellener

Lauria

2022

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…In the case of DR, both direct and indirect processes are used to convert x-rays into electric charges (Chotas et al 1999, Chotas andRavin 2001), as discussed in section 4.3.4. Recent developments for a novel pixel-structured scintillation screen with nanocrystalline Gd 2 O 3 :Eu particle sizes for high-spatial-resolution x-ray imaging detectors are being made for indirect x-ray imaging sensors with high sensitivity and high spatial resolution (Cha et al 2011a(Cha et al , 2011b.…”

Section: Computed and Digital Radiography Mammographymentioning

confidence: 99%

Review on the characteristics of radiation detectors for dosimetry and imaging

2014

View full text Add to dashboard Cite

The enormous advances in the understanding of human anatomy, physiology and pathology in recent decades have led to ever-improving methods of disease prevention, diagnosis and treatment. Many of these achievements have been enabled, at least in part, by advances in ionizing radiation detectors. Radiology has been transformed by the implementation of multi-slice CT and digital x-ray imaging systems, with silver halide films now largely obsolete for many applications. Nuclear medicine has benefited from more sensitive, faster and higher-resolution detectors delivering ever-higher SPECT and PET image quality. PET/MR systems have been enabled by the development of gamma ray detectors that can operate in high magnetic fields. These huge advances in imaging have enabled equally impressive steps forward in radiotherapy delivery accuracy, with 4DCT, PET and MRI routinely used in treatment planning and online image guidance provided by cone-beam CT. The challenge of ensuring safe, accurate and precise delivery of highly complex radiation fields has also both driven and benefited from advances in radiation detectors. Detector systems have been developed for the measurement of electron, intensity-modulated and modulated arc x-ray, proton and ion beams, and around brachytherapy sources based on a very wide range of technologies. The types of measurement performed are equally wide, encompassing commissioning and quality assurance, reference dosimetry, in vivo dosimetry and personal and environmental monitoring. In this article, we briefly introduce the general physical characteristics and properties that are commonly used to describe the behaviour and performance of both discrete and imaging detectors. The physical principles of operation of calorimeters; ionization and charge detectors; semiconductor, luminescent, scintillating and chemical detectors; and radiochromic and radiographic films are then reviewed and their principle applications discussed. Finally, a general discussion of the application of detectors for x-ray nuclear medicine and ion beam imaging and dosimetry is presented.

show abstract

“…Powder screens and transparent films are typical forms of thin-layer scintillators. Powder-screen-type scintillators are commonly used because various scintillator shapes, such as pixelated and curved, can be fabricated easily using such scintillators. − Powder-screen scintillators are typically nanoparticle scintillators. − For powders with a particle size much larger than the optical wavelength range, however, the powder can significantly scatter the optical light generated by the scintillator, which reduces the spatial resolution of the resulting X-ray image. , However, the use of nanoparticle scintillators with particle sizes smaller than the optical wavelength range reduces the probability of optical light scattering, which increases the spatial resolution. − …”

Section: Introductionmentioning

confidence: 99%

A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging

Jeong

Lee

et al. 2021

ACS Omega

View full text Add to dashboard Cite

Facile approaches for creating thin-film scintillators with high spatial resolutions and variable shapes are required to broaden the applicability of high-resolution X-ray imaging. In this study, a transparent nano-polycrystalline ZnWO4 thin-film scintillator was fabricated by thermal evaporation for high-resolution X-ray imaging. The scintillator is composed of nano-sized grains smaller than the optical wavelength range to minimize optical scattering. The high transparency of the scintillators affords a sufficiently high spatial resolution to resolve the 2 μm line and space patterns when used in a high-resolution X-ray imaging system with an effective pixel size of 650 nm. The thermal evaporation method is a convenient approach for depositing thin and uniform films on complex substrates. ZnWO4 thin-film scintillators with various shapes, such as pixelated and curved, were fabricated via thermal evaporation. The results show that the transparent nano-polycrystalline ZnWO4 thin-film scintillator deposited through thermal evaporation has a potential for use in various high-resolution X-ray imaging applications.

show abstract

Novel nanocrystalline Gd2O3(Eu) scintillator screens with a micro-pixel structure for high spatial resolution X-ray imaging

Cited by 14 publications

References 8 publications

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

Review on the characteristics of radiation detectors for dosimetry and imaging

A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging

Contact Info

Product

Resources

About

Novel nanocrystalline Gd2O3(Eu) scintillator screens with a micro-pixel structure for high spatial resolution X-ray imaging

Cited by 14 publications

References 8 publications

Synthesis and luminescence of Cs2HfCl6 micro- and Cs2HfF6 nanoparticles

Synthesis and luminescence of Cs2HfCl6 micro- and Cs2HfF6 nanoparticles

Review on the characteristics of radiation detectors for dosimetry and imaging

A Transparent Nano-Polycrystalline ZnWO4 Thin-Film Scintillator for High-Resolution X-ray Imaging

Contact Info

Product

Resources

About

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

Synthesis and luminescence of Cs₂HfCl₆ micro- and Cs₂HfF₆ nanoparticles

A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging