Nuclear Medicine and Molecular Imaging

The Korean Society of Nuclear Medicine (대한핵의학회)
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Motion Correction in PET/CT Images

PET/CT 영상 움직임 보정

  • Woo, Sang-Keun (Molecular Imaging Research Center, Radiological and Medical Sciences Research Institute, Korea Institute of Radiological and Medical Sciences) ;
  • Cheon, Gi-Jeong (Molecular Imaging Research Center, Radiological and Medical Sciences Research Institute, Korea Institute of Radiological and Medical Sciences)
  • 우상근 (한국원자력의학원 방사선의학연구소 분자영상연구부) ;
  • 천기정 (한국원자력의학원 방사선의학연구소 분자영상연구부)
  • Published : 2008.04.30
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Abstract

PET/CT fused image with anatomical and functional information have improved medical diagnosis and interpretation. This fusion has resulted in more precise localization and characterization of sites of radio-tracer uptake. However, a motion during whole-body imaging has been recognized as a source of image quality degradation and reduced the quantitative accuracy of PET/CT study. The respiratory motion problem is more challenging in combined PET/CT imaging. In combined PET/CT, CT is used to localize tumors and to correct for attenuation in the PET images. An accurate spatial registration of PET and CT image sets is a prerequisite for accurate diagnosis and SUV measurement. Correcting for the spatial mismatch caused by motion represents a particular challenge for the requisite registration accuracy as a result of differences in PET/CT image. This paper provides a brief summary of the materials and methods involved in multiple investigations of the correction for respiratory motion in PET/CT imaging, with the goal of improving image quality and quantitative accuracy.

Keywords

References

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