Conversion of mammographic images to appear with the noise and sharpness characteristics of a different detector and x-ray system

Medical Physics
A MackenzieKenneth C Young

Abstract

Undertaking observer studies to compare imaging technology using clinical radiological images is challenging due to patient variability. To achieve a significant result, a large number of patients would be required to compare cancer detection rates for different image detectors and systems. The aim of this work was to create a methodology where only one set of images is collected on one particular imaging system. These images are then converted to appear as if they had been acquired on a different detector and x-ray system. Therefore, the effect of a wide range of digital detectors on cancer detection or diagnosis can be examined without the need for multiple patient exposures. Three detectors and x-ray systems [Hologic Selenia (ASE), GE Essential (CSI), Carestream CR (CR)] were characterized in terms of signal transfer properties, noise power spectra (NPS), modulation transfer function, and grid properties. The contributions of the three noise sources (electronic, quantum, and structure noise) to the NPS were calculated by fitting a quadratic polynomial at each spatial frequency of the NPS against air kerma. A methodology was developed to degrade the images to have the characteristics of a different (target) imaging system. Th...Continue Reading

References

Feb 28, 2003·Medical Physics·Andrew D A Maidment, Michael Albert
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Citations

Jul 5, 2012·Medical Physics·Lucy M WarrenKenneth C Young
Jun 25, 2015·European Radiology·Alistair MackenzieKenneth C Young
Apr 12, 2016·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Alistair MackenzieKenneth C Young
Jun 10, 2016·Medical Physics·Lucas R BorgesMarcelo A C Vieira
Jun 26, 2017·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Alistair MackenzieKenneth C Young
Apr 12, 2018·Physics in Medicine and Biology·Premkumar ElangovanKevin Wells
Jun 24, 2017·IEEE Transactions on Medical Imaging·Lucas R BorgesMarcelo A C Vieira
Jul 17, 2014·Physics in Medicine and Biology·Premkumar ElangovanKevin Wells
Oct 25, 2017·Physics in Medicine and Biology·N W MarshallH Bosmans
Apr 6, 2021·European Journal of Radiology·Joana BoitaIoannis Sechopoulos
May 25, 2021·Journal of Medical Imaging·Joana BoitaIoannis Sechopoulos

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