フラットパネルディテクタシステムの画像評価  [in Japanese] Evalution of a Flat-panel Detector System  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

We evaluated the imaging performance of a flat-panel detector digital radiography system (CXDI-11 X-ray Digital Camera, Canon Inc.) and a computed radiography system (FCR9000C-HQ, Fuji Film). The characteristics of the two detectors and of the overall systems were compared. This included evaluation and comparison of the fundamental physical characteristics, including x-ray response curve, modulation transfer function (MTF), Wiener spectra, noise-equivalent quanta, and x-ray tube voltage-dependent detector response. Overall system performance was evaluated using receiver operating characteristic (ROC) analysis. The results of the study showed that the dynamic range of the CXDI-11 measured relative to the input x-ray flux was 10^3, similar to that of the FCR9000C-HQ. Both systems showed similar final MTFs, although the pre-sampling MTF of the CXDI-11 was better than that of the FCR9000C-HQ. Noise analysis, based on noise-equivalent quanta and Wiener spectra, showed that for normal exposure conditions the CXDI-11 had superior performance. With both systems, x-ray response (system output/incident x-ray exposure) increased with increasing x-ray tube voltage. ROC analysis indicated that the CXDI-11 was superior in overall performance.

Journal

  • Japanese Journal of Radiological Technology

    Japanese Journal of Radiological Technology 57(1), 68-77, 2001

    Japanese Society of Radiological Technology

References:  34

Cited by:  10

Codes

  • NII Article ID (NAID)
    110003439377
  • NII NACSIS-CAT ID (NCID)
    AN00197784
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0369-4305
  • Data Source
    CJP  CJPref  NII-ELS  J-STAGE 
Page Top