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Effective dose from direct and indirect digital panoramic units.

作者信息

Lee Gun-Sun, Kim Jin-Soo, Seo Yo-Seob, Kim Jae-Duk

机构信息

Department of Oral and Maxillofacial Radiology, School of Dentistry, Oral Biology Research Institute, Chosun University, Gwangju, Korea.

出版信息

Imaging Sci Dent. 2013 Jun;43(2):77-84. doi: 10.5624/isd.2013.43.2.77. Epub 2013 Jun 14.

DOI:10.5624/isd.2013.43.2.77
PMID:23807930
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3691377/
Abstract

PURPOSE

This study aimed to provide comparative measurements of the effective dose from direct and indirect digital panoramic units according to phantoms and exposure parameters.

MATERIALS AND METHODS

Dose measurements were carried out using a head phantom representing an average man (175 cm tall, 73.5 kg male) and a limbless whole body phantom representing an average woman (155 cm tall, 50 kg female). Lithium fluoride thermoluminescent dosimeter (TLD) chips were used for the dosimeter. Two direct and 2 indirect digital panoramic units were evaluated in this study. Effective doses were derived using 2007 International Commission on Radiological Protection (ICRP) recommendations.

RESULTS

The effective doses of the 4 digital panoramic units ranged between 8.9 µSv and 37.8 µSv. By using the head phantom, the effective doses from the direct digital panoramic units (37.8 µSv, 27.6 µSv) were higher than those from the indirect units (8.9 µSv, 15.9 µSv). The same panoramic unit showed the difference in effective doses according to the gender of the phantom, numbers and locations of TLDs, and kVp.

CONCLUSION

To reasonably assess the radiation risk from various dental radiographic units, the effective doses should be obtained with the same numbers and locations of TLDs, and with standard hospital exposure. After that, it is necessary to survey the effective doses from various dental radiographic units according to the gender with the corresponding phantom.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5112/3691377/f3e1e77da69c/isd-43-77-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5112/3691377/9a7709a55d58/isd-43-77-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5112/3691377/f3e1e77da69c/isd-43-77-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5112/3691377/9a7709a55d58/isd-43-77-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5112/3691377/f3e1e77da69c/isd-43-77-g002.jpg

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本文引用的文献

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The 2007 Recommendations of the International Commission on Radiological Protection. ICRP publication 103.国际放射防护委员会2007年建议。ICRP第103号出版物。
Ann ICRP. 2007;37(2-4):1-332. doi: 10.1016/j.icrp.2007.10.003.
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第三磨牙手术中下牙槽神经损伤的影像学预测
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Absorbed organ and effective doses from digital intra-oral and panoramic radiography applying the ICRP 103 recommendations for effective dose estimations.根据国际辐射防护委员会（ICRP）第103号出版物关于有效剂量估算的建议，得出数字化口腔内摄影和全景摄影的受照器官及有效剂量。
Br J Radiol. 2016 Oct;89(1066):20151052. doi: 10.1259/bjr.20151052. Epub 2016 Jul 25.
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Dosimetry of two extraoral direct digital imaging devices: NewTom cone beam CT and Orthophos Plus DS panoramic unit.两种口外直接数字化成像设备的剂量测定：NewTom锥形束CT和Orthophos Plus DS全景机
Dentomaxillofac Radiol. 2003 Jul;32(4):229-34. doi: 10.1259/dmfr/26310390.
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Radiographic equipment and techniques used in general dental practice: a survey of general dental practitioners in England and Wales.一般牙科实践中使用的放射成像设备和技术：对英格兰和威尔士普通牙科从业者的一项调查。
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An introduction to digital radiography in dentistry.牙科数字放射成像简介。
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