Development and evaluation of a large-area selenium-based flat-panel detector for real-time radiography and fluoroscopy

Akira Tsukamoto; Shinichi Yamada; Takayuki Tomisaki; Manabu Tanaka; Takuya Sakaguchi; Hiroshi Asahina; Kouhei Suzuki; Mitsushi Ikeda

doi:10.1117/12.349477

28 May 1999 Development and evaluation of a large-area selenium-based flat-panel detector for real-time radiography and fluoroscopy

Akira Tsukamoto, Shinichi Yamada, Takayuki Tomisaki, Manabu Tanaka, Takuya Sakaguchi, Hiroshi Asahina, Kouhei Suzuki, Mitsushi Ikeda

Author Affiliations +

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349477
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

The x-ray flat panel detector (FPD) is a key component of the next generation x-ray imaging systems which promote digitization of x-ray images. By developing FPD applicable to both fluoroscopy and radiography, it is expected that x-ray diagnostic systems will change dramatically not only in terms of performance, but also in shape and form. The purpose of this research is to develop a selenium-based FPD applicable to both radiography and fluoroscopy. This report presents the results of the work on new technology which can be applied to create clinically-useful view size detector. The prototype detector adopts 1000 micron thick selenium as the photoconductor, 23 cm square of field of view, 150 X 150 micron pixel pitch, 1536 X 1536 pixel number, and is capable of capturing images at up to 30 frames/second. The features of this prototype detector are: simple-structure selenium suitable for real-time readout, and a high voltage protection structure for the TFT array which acts at x-ray overexposure. To realize large field of view, the field uniformity performance of the selenium and TFT array has been improved, and noise from the TFT array has been minimized. In this paper, new physical performance related to MTF, input- and-output characteristics, image lag, blooming, etc., are discussed.

Citation Download Citation

Akira Tsukamoto, Shinichi Yamada, Takayuki Tomisaki, Manabu Tanaka, Takuya Sakaguchi, Hiroshi Asahina, Kouhei Suzuki, and Mitsushi Ikeda "Development and evaluation of a large-area selenium-based flat-panel detector for real-time radiography and fluoroscopy", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); https://doi.org/10.1117/12.349477

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available