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Patient setup verification procedure for a portal image in a computed radiography system with a high-resolution liquid-crystal display monitor

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Abstract

In our conventional visual inspection for setup verification, we have routinely used a console monitor of a CR system and a monitor of a treatment-planning system (i.e., the separate-monitor method) in order to avoid the need for CR portal-film generation. However, the separate-monitor method provided insufficient precision in detecting setup errors. We devised a setup verification procedure that uses a high-resolution liquid-crystal display monitor (i.e., the single-monitor method). Our objective in the present study was to evaluate the precision of the single-monitor method. These two methods were compared in terms of the precision of visual inspection. The single-monitor method was significantly superior to the separate-monitor method in sensitivity and in the magnitude of the discrepancy that could not be detected. The single-monitor method provides higher precision in visual inspection than does the separate-monitor method, and is a useful verification procedure.

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Authors and Affiliations

  1. Department of Radiology, Osaka Prefectural Medical Center for Respiratory and Allergic Diseases, 3-7-1 Habikino, Habikino, Osaka, 583-8588, Japan

    Hideki Fujita, Michihiro Yamaguchi, Yuichi Bessho, Tomio Fujioka & Haruyuki Fukuda

  2. Department of Medical Physics and Engineering, Division of Medical Technology and Science, Course of Health Science, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka, 565-0870, Japan

    Hideki Fujita & Kenya Murase

Authors
  1. Hideki Fujita
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  2. Michihiro Yamaguchi
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  3. Yuichi Bessho
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  4. Tomio Fujioka
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  5. Haruyuki Fukuda
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  6. Kenya Murase
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Corresponding author

Correspondence to Hideki Fujita.

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Fujita, H., Yamaguchi, M., Bessho, Y. et al. Patient setup verification procedure for a portal image in a computed radiography system with a high-resolution liquid-crystal display monitor. Radiol Phys Technol 3, 46–52 (2010). https://doi.org/10.1007/s12194-009-0075-0

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  • DOI: https://doi.org/10.1007/s12194-009-0075-0

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