Examination of the distance measurement error and exposed dose when using a 320-row area detector CT: A comparison with videofluoroscopic examination of swallowing

DOI Web Site 被引用文献12件 参考文献18件
  • Kanamori Daisuke
    Department of Oral and Maxillofacial Surgery, School of Medicine, Fujita Health University
  • Kagaya Hitoshi
    Department of Rehabilitation Medicine, School of Medicine, Fujita Health University
  • Fujii Naoko
    Department of Radiology, School of Medicine, Fujita Health University
  • Inamoto Yoko
    Department of Rehabilitation Medicine, School of Medicine, Fujita Health University
  • Nakayama Enri
    Department of Dysphagia Rehabilitation, Nihon University School of Dentistry
  • Suzuki Shoichi
    Faculty of Radiological Technology, School of Health Sciences, Fujita Health University
  • Mizutani Hideki
    Department of Oral and Maxillofacial Surgery, School of Medicine, Fujita Health University
  • Okada Sumiko
    Faculty of Rehabilitation, School of Health Sciences, Fujita Health University
  • Katada Kazuhiro
    Department of Radiology, School of Medicine, Fujita Health University
  • Saitoh Eiichi
    Department of Rehabilitation Medicine, School of Medicine, Fujita Health University

書誌事項

公開日
2011
DOI
  • 10.11336/jjcrs.2.18
公開者
一般社団法人 回復期リハビリテーション病棟協会

説明

Kanamori D, Kagaya H, Fujii N, Inamoto Y, Nakayama E, Suzuki S, Mizutani H, Okada S, Katada K, Saitoh E. Examination of the distance measurement error and exposed dose when using a 320-row area detector CT: A comparison with videofluoroscopic examination of swallowing. Jpn J Compr Rehabil Sci 2011; 2: 18-23 <br>Purpose: The purpose of this study was to compare the distance measurement error and exposed dose in 320-row area detector computed tomography (320-ADCT) and videofluoroscopic examination of swallowing (VF). <br>Method: We used markers of radiopacity attached to adult skull specimens to measure the distances between various sets of 2 points. In VF, we made the corrections using the mentalis marker. In 320-ADCT, we used a distance measurement tool. After obtaining the distance measurements, we compared the errors from VF and 320-ADCT. We used a RANDO Phantom to calculate the exposed dose by using thermoluminescence dosimeter (TLD) elements. <br>Results: In the case of VF, the relative error associated with the actual measured values was largest (12.9%) in the area between the mentalis and the left mandibular angle. In 320-ADCT, even the measurements with the largest error had a relative error within 0.34%. In VF, the dose absorbed through the skin on the incident side was 4.8 to 12.1 times higher than the dose absorbed on the opposite side, up to a maximum of 25.30 mGy; the effective dose was 1.05 mSv. Using 320-ADCT, the maximum dose absorbed through the skin was 47.07 mGy, and the effective dose was 1.65 mSv. <br>Conclusion: Compared with VF, the 320-ADCT approach produces a smaller measurement error, and observation is possible from a variety of directions. However, because the exposed dose is greater, a combination of both approaches should be skillfully used to evaluate eating and swallowing functions.

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