Physics

European Radiology

, Volume 12, Issue 7, pp 1741-1747

Clinical evaluation of digital radiography based on a large-area cesium iodide-amorphous silicon flat-panel detector compared with screen-film radiography for skeletal system and abdomen

  • Terue OkamuraAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Saori TanakaAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Koichi KoyamaAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Nishida NorihumiAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Hideo DaikokuyaAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Toshiyuki MatsuokaAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan
  • , Kenji KishimotoAffiliated withDepartment of Radiology, Osaka City University Hospital, 1–5-7, Ashahi-machi, Abeno-ku, Osaka 545-8586, Japan
  • , Masakatsu HatagawaAffiliated withDepartment of Radiology, Osaka City University Hospital, 1–5-7, Ashahi-machi, Abeno-ku, Osaka 545-8586, Japan
  • , Hiroaki KudohAffiliated withDepartment of Radiology, Osaka City University Hospital, 1–5-7, Ashahi-machi, Abeno-ku, Osaka 545-8586, Japan
    • , Ryusaku YamadaAffiliated withDepartment of Radiology, Osaka City University School of Medicine, 1–4-3, Ashahi-machi, Abeno-ku, Osaka 545-8585, Japan

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Abstract.

The aim of this clinical study was to compare the image quality of digital radiography using the new digital Bucky system based on a flat-panel detector with that of a conventional screen-film system for the skeletal structure and the abdomen. Fifty patients were examined using digital radiography with a flat-panel detector and screen-film systems, 25 for the skeletal structures and 25 for the abdomen. Six radiologists judged each paired image acquired under the same exposure parameters concerning three observation items for the bone and six items for the abdomen. Digital radiographic images for the bone were evaluated to be similar to screen-film images at the mean of 42.2%, to be superior at 50.2%, and to be inferior at 7.6%. Digital radiographic images for the abdomen were judged to be similar to screen-film images at the mean of 43.4%, superior at 52.4%, and inferior at 4.2%; thus, digital radiographic images were estimated to be either similar as or superior to screen-film images at over 92% for the bone and abdomen. On the statistical analysis, digital radiographic images were also judged to be preferred significantly in the most items for the bone and abdomen. In conclusion, the image quality of digital radiography with a flat-panel detector was superior to that of a screen-film system under the same exposure parameters, suggesting that dose reduction is possible with digital radiography.

Flat-panel detector Screen-film system Amorphous silicon Digital radiography Conventional radiography