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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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Published on: September 11, 2011

Multibeam field emission x-ray system with half-scan reconstruction algorithm.

Yang Lu1, Hengyong Yu, Guohua Cao

  • 1Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. lvyang@sjtu.edu.cn

Medical Physics
|September 14, 2010
PubMed
Summary

A novel multibeam field emission x-ray (MBFEX) system and half-scan algorithm reduce scanning time and motion artifacts in dynamic imaging. This innovation enhances image quality for time-varying objects.

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Last Updated: Jun 8, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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Published on: January 8, 2013

Area of Science:

  • Medical Imaging
  • X-ray Technology
  • Image Reconstruction

Background:

  • Traditional X-ray systems face limitations in capturing dynamic processes due to motion artifacts.
  • Reducing scanning time is crucial for imaging time-varying objects.

Purpose of the Study:

  • To propose a multibeam field emission x-ray (MBFEX) system.
  • To develop a compatible half-scan fan-beam reconstruction algorithm for the MBFEX system.

Main Methods:

  • A linear CNT-based MBFEX source array and a segmented detector were designed.
  • A multihole collimator ensured precise beam alignment.
  • Simulations using dynamic Shepp-Logan phantoms demonstrated artifact reduction.

Main Results:

  • The MBFEX system and half-scan algorithm effectively reduced scanning time.
  • Image quality was significantly improved for time-varying objects.
  • Motion artifacts were substantially mitigated.

Conclusions:

  • The MBFEX technique presents a promising advancement for multisource imaging systems.
  • This approach offers potential for innovative solutions in medical diagnostics.