Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses

Shigeru Kosuda, T. Kaji, H. Kobayashi, Masazumi Watanabe, Y. Iwasaki, S. Kusano

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Purpose: To compare interpretation performance on soft-copy presentations, with and without simple image manipulation, and on unmodified hard-copy presentations with regard to detection of pulmonary nodules and masses. Material and Methods: Fifty chest digital radiograph combinations of patients with a total of 60 nodules, 32 of which were 2.0 cm in diameter, were selected for the study. Three readers evaluated three separate image formats: unmodified hard-and soft-copies, and soft-copies with simple image manipulation of lung and mediastinum window settings, and zooming The screen display was 1600×1200 pixels with 8 bits/pixel. Results: The sensitivity, accuracy, detectability, and Az value of the soft-copy systems were clearly inferior to hard-copy evaluation. The mean Az values were 0.921 for unmodified hard-copy, 0.820 for image-manipulated soft-copy, and 0.781 for unmodified soft-copy. Conclusion: Soft-copy interpretations were not as sensitive in detecting pulmonary nodules and masses as hard-copy evaluation.

Original languageEnglish
Pages (from-to)420-424
Number of pages5
JournalActa Radiologica
Volume41
Issue number5
Publication statusPublished - 2000 Sep
Externally publishedYes

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Lung
Mediastinum
Thorax

Keywords

  • Image manipulation
  • Primary lung neoplasms, digital radiography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Kosuda, S., Kaji, T., Kobayashi, H., Watanabe, M., Iwasaki, Y., & Kusano, S. (2000). Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses. Acta Radiologica, 41(5), 420-424.

Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses. / Kosuda, Shigeru; Kaji, T.; Kobayashi, H.; Watanabe, Masazumi; Iwasaki, Y.; Kusano, S.

In: Acta Radiologica, Vol. 41, No. 5, 09.2000, p. 420-424.

Research output: Contribution to journalArticle

Kosuda, S, Kaji, T, Kobayashi, H, Watanabe, M, Iwasaki, Y & Kusano, S 2000, 'Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses', Acta Radiologica, vol. 41, no. 5, pp. 420-424.
Kosuda S, Kaji T, Kobayashi H, Watanabe M, Iwasaki Y, Kusano S. Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses. Acta Radiologica. 2000 Sep;41(5):420-424.
Kosuda, Shigeru ; Kaji, T. ; Kobayashi, H. ; Watanabe, Masazumi ; Iwasaki, Y. ; Kusano, S. / Hard-copy versus soft-copy with and without simple image manipulation for detection of pulmonary nodules and masses. In: Acta Radiologica. 2000 ; Vol. 41, No. 5. pp. 420-424.
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