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Title: An apparatus and method for directly measuring the depth-dependent gain and spatial resolution of turbid scintillators

Abstract

Turbid (powder or columnar–structured) scintillators are widely used in indirect flat panel detectors (I–FPDs) for scientific, industrial, and medical radiography. Light diffusion and absorption within these scintillators is expected to cause depth–dependent variations in their x ray conversion gain and spatial blur. Furthermore, these variations degrade the detective quantum efficiency of I–FPDs at all spatial frequencies. Despite their importance, there are currently no established methods for directly measuring scintillator depth effects. This work develops the instrumentation and methods to achieve this capability.

Authors:
 [1];  [1];  [2];  [3];  [1]
  1. State Univ. of New York at Stony Brook, Stony Brook, NY (United States)
  2. Hamamatsu Photonics K.K. (Japan)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1484441
Alternate Identifier(s):
OSTI ID: 1475098
Report Number(s):
[BNL-209641-2018-JAAM]
[Journal ID: ISSN 0094-2405]
Grant/Contract Number:  
[SC0012704; DE‐SC0012704]
Resource Type:
Accepted Manuscript
Journal Name:
Medical Physics
Additional Journal Information:
[ Journal Volume: 45; Journal Issue: 11]; Journal ID: ISSN 0094-2405
Publisher:
American Association of Physicists in Medicine
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; flat panel detector; Lubberts effect; scintillator; Swank factor; x ray

Citation Formats

Howansky, Adrian, Lubinsky, A. R., Suzuki, Katsuhiko, Ghose, Sanjit, and Zhao, Wei. An apparatus and method for directly measuring the depth-dependent gain and spatial resolution of turbid scintillators. United States: N. p., 2018. Web. doi:10.1002/mp.13177.
Howansky, Adrian, Lubinsky, A. R., Suzuki, Katsuhiko, Ghose, Sanjit, & Zhao, Wei. An apparatus and method for directly measuring the depth-dependent gain and spatial resolution of turbid scintillators. United States. doi:10.1002/mp.13177.
Howansky, Adrian, Lubinsky, A. R., Suzuki, Katsuhiko, Ghose, Sanjit, and Zhao, Wei. Fri . "An apparatus and method for directly measuring the depth-dependent gain and spatial resolution of turbid scintillators". United States. doi:10.1002/mp.13177. https://www.osti.gov/servlets/purl/1484441.
@article{osti_1484441,
title = {An apparatus and method for directly measuring the depth-dependent gain and spatial resolution of turbid scintillators},
author = {Howansky, Adrian and Lubinsky, A. R. and Suzuki, Katsuhiko and Ghose, Sanjit and Zhao, Wei},
abstractNote = {Turbid (powder or columnar–structured) scintillators are widely used in indirect flat panel detectors (I–FPDs) for scientific, industrial, and medical radiography. Light diffusion and absorption within these scintillators is expected to cause depth–dependent variations in their x ray conversion gain and spatial blur. Furthermore, these variations degrade the detective quantum efficiency of I–FPDs at all spatial frequencies. Despite their importance, there are currently no established methods for directly measuring scintillator depth effects. This work develops the instrumentation and methods to achieve this capability.},
doi = {10.1002/mp.13177},
journal = {Medical Physics},
number = [11],
volume = [45],
place = {United States},
year = {2018},
month = {9}
}

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