Performance of a novel 43-cm x 43-cm flat-panel detector with CsI:Tl scintillator

Yamazaki, Tatsuya; Tamura, T.; Nokita, Makoto; Okada, Satoshi; Hayashida, Shinsuke; Ogawa, Yoshihiro

doi:10.1117/12.534010

Cited by 14 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most widely used design of flat detectors as of today is based on a two-level, indirect conversion process [9][10][11][12][13]. The X-ray quantum is absorbed creating a high energy electron via photo absorption (Fig.…”

Section: Flat Detectors Based On An Indirect Conversion Processmentioning

confidence: 99%

Flat detectors and their clinical applications

Spahn

2005

Eur Radiol

111

View full text Add to dashboard Cite

Diagnostic and interventional flat detector X-ray systems are penetrating the market in all application segments. First introduced in radiography and mammography, they have conquered cardiac and general angiography and are getting increasing attention in fluoroscopy. Two flat detector technologies prevail. The dominating method is based on an indirect X-ray conversion process, using cesium iodide scintillators. It offers considerable advantages in radiography, angiography and fluoroscopy. The other method employs a direct converter such as selenium which is particularly suitable for mammography. Both flat detector technologies are based on amorphous silicon active pixel matrices. Flat detectors facilitate the clinical workflow in radiographic rooms, foster improved image quality and provide the potential to reduce dose. This added value is based on their large dynamic range, their high sensitivity to X-rays and the instant availability of the image. Advanced image processing is instrumental in these improvements and expand the range of conventional diagnostic methods. In angiography and fluoroscopy the transition from image intensifiers to flat detectors is facilitated by ample advantages they offer, such as distortion-free images, excellent coarse contrast, large dynamic range and high X-ray sensitivity. These characteristics and their compatibility with strong magnetic fields are the basis for improved diagnostic methods and innovative interventional applications.

show abstract

Section: Flat Detectors Based On An Indirect Conversion Processmentioning

confidence: 99%

Flat detectors and their clinical applications

Spahn

2005

Eur Radiol

111

View full text Add to dashboard Cite

show abstract

“…Indirect flat panel detectors (FPDs) are widely used for digital X‐ray imaging; therefore improvements in their sensitivity and spatial resolution are required 1. FPDs are composed of a scintillator plate and a photodetector array plane.…”

Section: Composition and Properties Of The Pss Systemsmentioning

confidence: 99%

“…It is particularly difficult to find practical materials with a higher LY than that of Gd 2 O 2 S:Tb and CsI:Tl. CsI:Tl films,1, 2 which are grown by evaporation, possess light‐guiding properties because of their needle‐shaped microstructure, and have been used to improve the light collection efficiency. However, their light‐guiding properties are not optimal compared with an ideal needle‐shaped structure; the luminescent light is scattered because of insufficient separation between needles as well as their sidewall roughness.…”

Section: Composition and Properties Of The Pss Systemsmentioning

confidence: 99%

Development of Phase‐Separated Scintillators with Light‐Guiding Properties

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Active matrix flat panel X‐ray imager (AMFPI) has undergone extensive research since it has many advantages such as real‐time operation, improved image quality, computer‐aided diagnosis, and electronic filing over conventional analog X‐ray imaging technologies . The AMFPIs have thus been successfully introduced to such a variety of medical X‐ray imaging applications as radiography, mammography, fluoroscopy, angiography, and radiotherapy . It is classified into indirect conversion and direct conversion types by X‐ray detection principle.…”

mentioning

confidence: 99%

“…It is classified into indirect conversion and direct conversion types by X‐ray detection principle. In the indirect conversion, energetic X‐rays are captured and converted to visible light through scintillator layer such as cesium iodide . An array of amorphous silicon p‐i‐n photodiodes located below the scintillator then converts visible photons to electronic signal, so that amorphous silicon thin‐film transistors (a‐Si TFTs) transports the signal charge carriers to external readout integrated circuit (IC).…”

mentioning

confidence: 99%