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Portrait of Anders Tingberg. Photo

Anders Tingberg

Associate professor

Portrait of Anders Tingberg. Photo

Digital radiography: optimization of image quality and dose using multi-frequency software

Author

  • Helle Precht
  • Ole Gerke
  • Karin Rosendahl
  • Anders Tingberg
  • Dag Waaler

Summary, in English

BACKGROUND: New developments in processing of digital radiographs (DR), including multi-frequency processing (MFP), allow optimization of image quality and radiation dose. This is particularly promising in children as they are believed to be more sensitive to ionizing radiation than adults. OBJECTIVE: To examine whether the use of MFP software reduces the radiation dose without compromising quality at DR of the femur in 5-year-old-equivalent anthropomorphic and technical phantoms. MATERIALS AND METHODS: A total of 110 images of an anthropomorphic phantom were imaged on a DR system (Canon DR with CXDI-50 C detector and MLT[S] software) and analyzed by three pediatric radiologists using Visual Grading Analysis. In addition, 3,500 images taken of a technical contrast-detail phantom (CDRAD 2.0) provide an objective image-quality assessment. RESULTS: Optimal image-quality was maintained at a dose reduction of 61% with MLT(S) optimized images. Even for images of diagnostic quality, MLT(S) provided a dose reduction of 88% as compared to the reference image. Software impact on image quality was found significant for dose (mAs), dynamic range dark region and frequency band. CONCLUSION: By optimizing image processing parameters, a significant dose reduction is possible without significant loss of image quality.

Department/s

  • Medical Radiation Physics, Malmö

Publishing year

2012

Language

English

Pages

1112-1118

Publication/Series

Pediatric Radiology

Volume

42

Issue

9

Document type

Journal article

Publisher

Springer

Topic

  • Radiology, Nuclear Medicine and Medical Imaging

Status

Published

Research group

  • Medical Radiation Physics, Malmö

ISBN/ISSN/Other

  • ISSN: 1432-1998