A Liver Phantom Study: CT Radiation Dose Reduction and Different Image Reconstruction Algorithms Affect Diagnostic Quality

  title={A Liver Phantom Study: CT Radiation Dose Reduction and Different Image Reconstruction Algorithms Affect Diagnostic Quality},
  author={Kristina Ragnhild Br{\ae}nne and L. I. Flinder and Marit Almenning Martiniussen and Kristin Jensen and C. Reisse and L. Julsrud and A. C. Martinsen},
  journal={Journal of Computer Assisted Tomography},
Objective The aim of this study was to evaluate whether iterative reconstruction techniques for different dose levels and/or reduction of tube potential can increase liver lesion detectability. Methods An anthropomorphic liver phantom was scanned at different dose levels (CTDIvol 15 mGy, 7.5 mGy, 5 mGy, and 2.6 mGy) and tube potential levels (120 kV, 100 kV, and 80 kV). Images were reconstructed with the following algorithms: filtered back projection (FBP), adaptive statistical iterative… Expand
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Abdominal CT with model-based iterative reconstruction (MBIR): initial results of a prospective trial comparing ultralow-dose with standard-dose imaging.
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Model-based iterative reconstruction and adaptive statistical iterative reconstruction techniques in abdominal CT: comparison of image quality in the detection of colorectal liver metastases.
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Abdominal CT: comparison of adaptive statistical iterative and filtered back projection reconstruction techniques.
Comparison of image quality and lesion conspicuity on abdominal computed tomographic images acquired with different x-ray tube current-time products and reconstructed with adaptive statistical iterative reconstruction (ASIR) and filtered back projection (FBP) techniques shows ASIR lowers noise and improves diagnostic confidence in and conspicuity of subtle abdominal lesions at 8.4 mGy. Expand
Reducing Abdominal CT Radiation Dose With Adaptive Statistical Iterative Reconstruction Technique
ASIR technique allows radiation dose reduction for abdominal CT examinations whereas improving image noise compared with the FBP technique, which however, was mild and did not affect the diagnostic acceptability of images. Expand
Iterative reconstruction methods in two different MDCT scanners: physical metrics and 4-alternative forced-choice detectability experiments--a phantom approach.
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  • F. Mueck, M. Körner, +5 authors S. Wirth
  • Medicine
  • RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin
  • 2012
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Liver CT images reconstructed with MBIR model-based iterative reconstruction may allow up to 59% radiation dose reduction compared with the dose with ASIR adaptive statistical iterative reconstructions, without compromising depiction of findings or image quality. Expand