Comparison of low-contrast detail perception on storage phosphor radiographs and digital flat panel detector images

IEEE Transactions on Medical Imaging
S PeerWerner Jaschke

Abstract

A contrast detail analysis was performed to compare perception of low-contrast details on X-ray images derived from digital storage phosphor radiography and from a flat panel detector system based on a cesium iodide/amorphous silicon matrix. The CDRAD 2.0 phantom was used to perform a comparative contrast detail analysis of a clinical storage phosphor radiography system and an indirect type digital flat panel detector unit. Images were acquired at exposure levels comparable to film speeds of 50/100/200/400 and 800. Four observers evaluated a total of 50 films with respect to the threshold contrast for each detail size. The numbers of correctly identified objects were determined for all image subsets. The overall results show that low-contrast detail perception with digital flat panel detector images is better than with state of the art storage phosphor screens. This is especially true for the low-exposure setting, where a nearly 10% higher correct observation ratio is reached. Given its high detective quantum efficiency the digital flat panel technology based on the cesium iodide scintillator/amorphous silicon matrix is best suited for detection of low-contrast detail structures, which shows its high potential for clinical imag...Continue Reading

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Citations

Apr 24, 2008·European Radiology·Cornelia Schaefer-ProkopMathias Prokop
Feb 20, 2008·Radiation Protection Dosimetry·J M FernandezE Vano
Mar 24, 2011·AJR. American Journal of Roentgenology·Patrick McLaughlinMichael M Maher
Jul 9, 2004·The British Journal of Radiology·V TsapakiV Neofotistou
Mar 5, 2010·IEEE Transactions on Medical Imaging·Srinivasan Vedantham, Andrew Karellas
Jul 11, 2006·Journal of Biomedical Optics·Brian W PogueKeith D Paulsen
Feb 8, 2006·Radiation Protection Dosimetry·H P Busch, K Faulkner
Jul 18, 2003·Journal of Thoracic Imaging·Cornelia Schaefer-ProkopMathias Prokop
Jun 4, 2019·Journal of Applied Clinical Medical Physics·Bente KonstMagnus Båth
Feb 18, 2015·Science and Engineering Ethics·Ioanna SemendeferiIoannis Pavlidis
May 17, 2003·Investigative Radiology·Elmar KotterMathias Langer

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