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Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
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Proton computed tomography using a 1D silicon diode array.

Peng Wang1, Jochen Cammin2, Francesca Bisello3

  • 1Texas Center for Proton Therapy, Irving, Texas 75063.

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|October 27, 2016
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Summary
This summary is machine-generated.

This study shows silicon diode arrays are feasible for proton imaging, enabling direct proton stopping power measurement for proton radiography (PR) and proton computed tomography (PCT) with good resolution.

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Area of Science:

  • Medical Physics
  • Particle Imaging
  • Detector Technology

Background:

  • Proton radiography (PR) and proton computed tomography (PCT) offer direct proton stopping power measurement.
  • Practical and cost-effective proton imaging detectors are currently limited.

Purpose of the Study:

  • To investigate the feasibility of proton imaging using a silicon diode array.
  • To assess the potential of silicon diode arrays for PR and PCT applications.

Main Methods:

  • A one-dimensional silicon diode detector array (1DSDA) was used for proton imaging.
  • Phantoms were imaged using translation and rotation for 2D proton radiographs.
  • Filtered backprojection was employed for PCT image reconstruction.

Main Results:

  • Successful acquisition of PR and PCT images of a PMMA cube using the 1DSDA.
  • Water equivalent thickness (WET) measured with 2.0 mm resolution and 1.5 mm maximum error.
  • PCT image reconstruction showed good agreement with simulations, resolving structures down to 2.0 mm.

Conclusions:

  • Silicon diode arrays are feasible for proton imaging.
  • This technology offers potential for fast image acquisition and high resolution in PR and PCT.