巻号一覧
37 巻 (1997)
- 4 号 p. 275-
- 3 号 p. 191-
- 2Supplement 号 p. 25-
- 2 号 p. 125-
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37 巻, 2 号
選択された号の論文の9件中1～9を表示しています
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上村 修三郎1997 年 37 巻 2 号 p. 125-126
発行日: 1997/09/10
公開日: 2011/09/05
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第三報 撮影方向の違いによる剖検下顎頭の骨形態異常検出率の比較菅原 千恵子, 高橋 章, 竹内 徹, 下村 学, 細木 秀彦, 小中 ひとみ, 上村 修三郎, 柴田 考典1997 年 37 巻 2 号 p. 127-135
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーThe detectability of osseous abnormalities of the mandibular condyle in two different projections using the panoramic x-ray unit was examined. Seventy two autopsy mandibular condyles with macroscopic osseous changes were selected. Corrected sagittal and frontal tomography and panoramic radiography were performed with the condyle in the tomographic layer. Panoramic radiography included two different projections, one at a horizontal angulation of 18° postero-medially from the frontal plane (lateral mode) and another 30° antero-medially (oblique mode). The vertical angulation of the x-ray tube was fixed upward 3° for the lateral and oblique projections. Radiographic concavity, osteophyte, sclerosis and erosion of the condyles were recorded. Sensitivity of the detection of these osseous abnormalities revealed by the two panoramic projections were calculated based on sagittal and frontal tomographic findings as a gold standard. Sensitivity of the detection of each abnormality revealed by lateral panoramic projections/oblique projections/combination of lateral and oblique projections were as follows. Concavity; 0.49/0.22/0.63, osteophyte; 0.69/0.38/0.69, erosion; 0.42/0.71/0.71, sclerosis; 0.46/0.38/0.50, total; 0.73/0.51/0.75. The oblique projection was essential for the detection of erosion, while the lateral projection for osteophyte. When panoramic radiography is employed as a scouting method for temporomandibular joint disease, two different projections are necessary to detect osseous abnormalities sensitively.抄録全体を表示PDF形式でダウンロード (2736K) -
古内 寿, 高橋 和裕, 三條 大助, 幸地 省子1997 年 37 巻 2 号 p. 136-142
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーThis study was designed to determine the most useful standard plane for X-ray CT of secondary bone grafting to alveolar clefts. Sequential CT images for maxillary bone of 4 child dry skulls were obtained with a thickness of 2mm and an interval of 2mm in the plane parallel to the anterior nasal spine-porion line (ANS-PO line), Frankfort horizon-tal plane (FH plane) and orbitomeatal line (OM line). The images in these 3 planes were compared. The images in the plane parallel to the ANS-PO line were most useful for understanding the form and width of alveolar clefts. The following is a summary of the results: 1) the plane parallel to the ANS-PO line has the nearest inclination to the occlusal plane, so the form and size of the alveolar clefts could be easily visualized, 2) plane setting in the ANS-PO line on scout view was simple, and CT cephalometric images in the ANS-PO line could be standardized before and after bone grafting, 3) the relationship between teeth and clefts on the CT images was simple to visualize, 4) the ANS-PO line could be used as the standard plane for analyzing growth of alveoli, 5) metal artifacts due to dental and orthodontic materials were minimized when using the ANS-PO line.抄録全体を表示PDF形式でダウンロード (2495K) -
阪本 真弥, 日向野 修一, 高橋 昭喜, 栗原 紀子, 笹野 高嗣, 三條 大助1997 年 37 巻 2 号 p. 143-150
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーTo find an appropriate fast sequence method for MR scanning of TMJ, 5 sequences (i. e., fast imaging with steady precession (FISP), fast low angle shot (FLASH), conventional T1-weighted spin echo (SE) and fast spin echo (FSE, TR/TE: 1100/12, 3000/15)) were compared in 14 TMJs in the closed mouth position in 7 volunteers with normal TMJs, using a 1.5 T MR system. All these imaging sequences were designed to finish within 3 minutes. Image contrast and contrast-to-noise ratio (CNR) between the disc and surrounding tissues (i. e., the space between the articular eminence and disc (SAD) and lateral pterygoid muscle) were evaluated. Visual evaluation including position and contours of the disc, border between the disc and surrounding tissues, cortical bone and fatty bone marrow of mandibular condyle, was also performed by 4 radiologists. The image contrast between the disc and SAD was highest in FLASH among the 5 sequences tested. There were no significant differences in CNR between the disc and surrounding tissues among the 5 sequences tested. In visual evaluation including position and contours of the disc, the border between the disc and surrounding tissues, FISP, FLASH and FSE-1100 showed high score, while FISP and FLASH showed low scores in assessing fatty bone marrow. We conclude that FLASH is the most reliable sequence in assessing disc position, and FSE-1100 is the most useful technique for TMJ imaging including bone evaluation.抄録全体を表示PDF形式でダウンロード (5618K) -
谷本 啓二, 石井 光道, 末井 良和, 山田 信一1997 年 37 巻 2 号 p. 151-155
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーA case of sialodochitis fibrinosa in the submandibular gland is reported. White mucous material consisting of eosinophils and fibrinous tissue obstructed the ductal lumen before the enlargement of the narrowed orifices of the bilateral submandibular glands. Sialodochitis was detected in the right submandibular gland sialogram. Increased IgE was shown by blood examination. Since a relationship with asthma and urticaria was suspected in this case, extensive allergic treatment was recommended. An inquiry made by telephone revealed the patient to be in a satisfactory condition 1 year and a half later.抄録全体を表示PDF形式でダウンロード (3676K) -
正木 文浩, 内藤 宗孝, 石上 友彦, 宮尾 宣行, 林 正之, 田中 貴信, 有地 榮一郎1997 年 37 巻 2 号 p. 156-163
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーDental magnetic attachments are currently used in clinical dentistry and are also very useful whenever denture retention is needed. The keeper may disturb MRI diagnosis, which is the most seious clinical problem of magnetic attachments. The purpose of this study was to examine the interference and differences in volume and form of the keeper in MRI. The results were as follows: 1. MRI artifacts were reduced ally to reductions volume of the keeper. MRI artifact size of keepers 1.00 and 0.60mm thick were less than half and less than 1/10 as compared to that with the 0.10mm thick keeper, respectively. 2. A 1.00mm sample keeper was placed into a subjects, maxillary 2 nd molar and the MRI artifact was quite large but did not reach the cranium. A 0.05mm thick sample keeper was also placed in the same area and the artifact was localized to the alveolar region.抄録全体を表示PDF形式でダウンロード (6032K) -
内田 啓一, 酒徳 明彦, 深澤 常克, 人見 昌明, 児玉 健三, 藤本 知一, 長内 剛, 和田 卓郎1997 年 37 巻 2 号 p. 164-165
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (1601K) -
王立放射線科医協会及び国立放射線防護庁報告―その(3)―日本歯科放射線学会放射線防護委員会1997 年 37 巻 2 号 p. 166-178
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (1484K) -
1997 年 37 巻 2 号 p. 179-182
発行日: 1997/09/10
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (522K)
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