巻号一覧
50 巻 (2010)
- 4 号 p. 43-
- 3 号 p. 21-
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50 巻, 3 号
選択された号の論文の3件中1～3を表示しています
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原著
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秋山 広徳, 古跡 孝和, 板垣 恵輔, 四井 資隆, 蒲生 祥子, 清水谷 公成2010 年 50 巻 3 号 p. 21-26
発行日: 2010年
公開日: 2011/03/11
ジャーナル フリーObjective: In this study, to clarify quality control issues in a dental X-ray unit, we surveyed the uniformity and safety of absorbed doses and exposure time from dental X-ray units, and evaluated image quality of intraoral radiography at Osaka Dental University Hospital.
Materials and Methods: Measurements of dose and exposure time were carried out five times and the mean was calculated at twenty-two dental X-ray units in our university hospital using the standard parameters for the mandibular molar region in adults. Intraoral radiography for evaluation of image quality was taken using D-speed films under the standard parameters for the mandibular molar region in adults and E-speed films for pediatric patients. Evaluation of image quality was performed by three oral radiologists.
Results: Dose and exposure time differed significantly among units. Image quality of intraoral radiography using D-speed films was not significantly better than that of E-speed films.
Conclusion: This study demonstrated that it is necessary to establish a uniform dose and exposure time and to change D-speed films to E-speed films when obtaining intraoral radiography in our hospital.抄録全体を表示PDF形式でダウンロード (577K) -
森田 光子, 有地 淑子, 木瀬 祥貴, 後藤 真一, 泉 雅浩, 内藤 宗孝, 勝又 明敏, 有地 榮一郎2010 年 50 巻 3 号 p. 27-38
発行日: 2010年
公開日: 2011/03/11
ジャーナル フリーObjective: To clarify the educational effect of a lecture on differential imaging features comparing ameloblastomas and keratocystic odontogenic tumors of the mandibles presented to dental students.
Methods: Panoramic and CT images of 10 ameloblastomas and 10 keratocystic odontogenic tumors were randomly presented 114 dental students. Test scores, correct answer ratios, identification index, and understanding of the imaging features contributing to a correct diagnosis were serially evaluated before and after the lecture on the differential imaging features comparing the two types of tumors.
Results: The mean and standard deviation of the scoring ratios of dental students diagnosing these lesions on panoramic and CT images were 48.8 ± 10.8% and 52.5 ± 12.9%, respectively. After the lecture on the differential imaging features comparing the two tumors, the scoring ratios improved significantly. After the lecture, both the numbers of patients whose images were correctly diagnosed and the identification indices increased. The lecture also increased the number of imaging features recognized as contributing to the correct diagnosis.
Conclusion: A lecture on the differential imaging features comparing ameloblastomas and keratocystic odontogenic tumors of the mandibles contributed to the improvement of imaging diagnosis skills among dental students.抄録全体を表示PDF形式でダウンロード (785K)
写真供覧
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内田 啓一, 内山 真紀子, 木村 晃太, 三木 学, 黒岩 博子, 杉野 紀幸, 長内 秀, 望月 慎恭, 山田 真一郎, 藤木 知一, ...2010 年 50 巻 3 号 p. 39-41
発行日: 2010年
公開日: 2011/03/11
ジャーナル フリーPDF形式でダウンロード (333K)
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