Evaluation of exposure conditions on digital panoramic dental radiography equipment with CCD receptors
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- Matsumoto Yoshiyuki
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Hayashi Yasuhisa
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Yotsui Yoritaka
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Itagaki Keisuke
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Kawasaki Yasunori
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Koseki Takakazu
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
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- Koseki Yonoshin
- Graduate School of Dentistry(Oral Radiology)and Department of Oral Radiology, Osaka Dental University
Bibliographic Information
- Other Title
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- CCDデジタルパノラマX線画像システムの至適撮影条件について
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Description
We compared the perceived quality of panoramic dental images obtained using both digital charge-coupled devices(CCD)and analog radiographic film to determine the ideal clinical exposure conditions.Images were exposed on an averaged man phantom using same machine at 60, 70 and 80kV and 2, 4, 6, 8 and 10mA.Many clinicians have noted that the visual characteristics of images made using digital radiography are different from those of film based images.We selected 15 digital radiographs and made a computer program that allowed the observers to manipulate the contrast and brightness of the image.The diagnostic image quality was evaluated by six observers, five of whom were oral radiologists, and the other a postgraduate student.The observers were asked to evaluate 20 points on both the digital and analog images.We found that the best digital radiographic images were exposed at 70kV / 8mA, and the best analog images were at 70kV / 6mA.However, the digital images deteriorated at tube currents above 8mA for all tube voltages.The observers found no difference between the two methods for the 20 anatomical points evaluated.These results indicate that the digital system is a useful diagnostic tool that also reduces radiation exposure.We concluded that digital images are clinically equivalent to conventional film images for panoramic dental radiography.
Journal
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- Shikaigaku
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Shikaigaku 63 (1), 33-37, 2000
Osaka Odontological Society
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Details 詳細情報について
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- CRID
- 1390001204208766336
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- NII Article ID
- 110001724138
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- NII Book ID
- AN00099810
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- ISSN
- 2189647X
- 00306150
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed