Design of intergrated radiation detectors with a-Si photodiodes on ceramic scintillators for use in x-ray computed tomography

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/23.57404· OSTI ID:6609552

Takahashi, T; Itoh, H; Shimada, T; Takeuchi, H ^[1]

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1. Central Research Lab., Hitachi, Ltd., P.O. Box 2, Kokubunji, Tokyo (JP)

An integrated radiation detector with a-Si photodiodes on ceramic scintillators is designed for use in x-ray computed tomography. The output signal is estimated using Monte Carlo simulation. Results show that this detector has higher sensitivity than a c-Si photodiode/scintillator detector when a transparent layer between the scintillator and the thin film semiconductor is optimized. The noise characteristic is also considered when an integrated detector is coupled with an operational amplifier. Good agreement is shown between predicted and measured parameters.

• OSTI ID: 6609552
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Vol. 37:3; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
07 ISOTOPES AND RADIATION SOURCES
42 ENGINEERING
36 MATERIALS SCIENCE
CERAMICS
SCINTILLATOR-PHOTODIODE DETECTORS
INTEGRATED CIRCUITS
COMPUTERIZED TOMOGRAPHY
DESIGN
INDUSTRIAL RADIOGRAPHY
MONTE CARLO METHOD
NOISE
PULSE AMPLIFIERS
SILICON
X RADIATION
AMPLIFIERS
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SEMIMETALS
TOMOGRAPHY
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments
070204 - Radiation Sources- Industrial Uses
Radiometric
426000 - Engineering- Components
Electron Devices & Circuits- (1990-)
360204 - Ceramics
Cermets
& Refractories- Physical Properties