Dento-alveolar three-dimensional imaging utilizing TACT tomo-synthesis, stereography and virtual cursor

利用 TACT 断层合成、立体成像和虚拟光标进行牙槽三维成像

• 批准号: 14571801
• 负责人: HAYAKAWA Yoshihiko
• 金额: $ 2.18万
• 依托单位: Tokyo Dental College
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14571801/
• 关键词: TACT; hologram; three-dimensional imaging; stereography; virtual cursor; 3D-reconstruction

(1)Reconstructed two-dimensional(2D) slices, which were generated by the Tuned-Aperture Computed Tomography(TACT) algorithm, an interactive, low-dose, low-cost, three-dimensional tomo-synthesis system, were applied for three-dimensional dento-alveolar imaging. The diagnostic task we examined was the assessment of impacted maxillary teeth. 2D slices and pseudo-holograms were found to significantly improved depiction of the buccal/palatal position of the impacted tooth. TACT was perceived to improve depiction of the buccal/palatal position of the impacted tooth and its relationship with adjacent teeth (p<.0001). TACT outperformed conventional images in terms of both subjective assessments for clinical decision making.(2)Further we evaluated the comparative diagnostic value of tomo-synthesis, pseudo-hologram and 3D(three-dimensional)-CT images. Pseudo-holograms as well as 2D slices generated by TACT. Reconstructed 3D-images of multi-detector row CT are comparatively evaluated as the depth … More discrimination and the diagnostic utility for the localization of impacted tooth and surrounding anatomic details. 2D slices and pseudo- holograms were found to significantly improved depiction of the buccal/palatal position. In cases of horizontal impaction, pseudo-holograms as well as 3D-CT were preferred to 2D slices. TACT occasionally altered treatment option selection.(3)Furthermore, glasses-free stereoscopic liquid-crystal display was applied to displaying dento-alveolar images. Due to the progress of 3D-viewing technology of the flat TFT display, the glasses-free stereoscopic display is available. Therefore, we examined to use a 3D-viewing display without eye-glasses to improve the recognition of 3D anatomical structure. 3D data set was easily modified by the provided software for the specific 3D-viewing system. The creation of contents for 3D-viewing is almost automatically performed. The spatial perception utilizing virtual cursor was depended on the number of views. The depth perception toward dento-alveolar structures somewhat improved by the stereoscopic view nevertheless observers were less attuned to the 3D-viewing display. Less

（1）采用交互式、低剂量、低成本的三维断层合成系统Tuned-Aperture Computed Tomography（TACT）算法生成的重建二维（2D）切片用于三维牙槽骨成像。我们检查的诊断任务是评估上颌埋伏牙。2D切片和伪全息图被发现显着改善的颊/腭位置的阻生牙齿的描述。TACT被认为可以改善对阻生牙颊/腭位置及其与邻牙关系的描述（p<0.0001）。TACT在临床决策的主观评估方面优于传统图像。（2）进一步评价了断层合成、伪全息图和三维CT图像的诊断价值。TACT生成的伪全息图以及2D切片。多探测器行CT的重建3D图像被比较地评价为深度 ...更多信息 识别和诊断实用性的定位埋伏牙和周围的解剖细节。发现2D切片和伪全息图显著改善了颊/腭位置的描绘。在水平撞击的情况下，伪全息图以及3D-CT优于2D切片。TACT偶尔会改变治疗选择。（3）采用裸眼立体液晶显示器显示牙槽骨图像。由于平板TFT显示器的3D观看技术的进步，裸眼立体显示器是可用的。因此，我们研究了使用不带眼镜的3D观看显示器来提高3D解剖结构的识别。3D数据集可以通过提供的软件轻松修改，用于特定的3D查看系统。用于3D观看的内容的创建几乎自动执行。利用虚拟光标的空间感知依赖于视图的数量。对牙槽骨结构的深度知觉有所改善，但观察者不太适应3D观看显示。少

项目成果

Comparative diagnostic value of interactive tomo-synthesis, pseudo-hologram, 3D-CT applied for three-dimensional dento-alveolar imaging

交互式断层合成、伪全息图、3D-CT应用于三维牙槽骨成像的诊断价值比较

• 发表时间: 2003
• 期刊: Radiology 229 Suppl.
• 作者: Y Hayakawa;N Kobayashi;Y Kousuge;M Wakoh;S-K Chen;A G Farman
• 通讯作者: A G Farman

Tuned-Aperture Computed Tomography (TACT【〇!R】)による歯および周囲組織の三次元画像診断の有用性

使用调谐孔径计算机断层扫描（TACT【〇!R】）对牙齿和周围组织进行 3D 图像诊断的实用性

• 发表时间: 2002
• 期刊: 映像情報MEDICAL 34・10
• 作者: 山本一普;早川吉彦;小林紀雄;光菅裕治;和光衛;関口浩;薬師寺仁;A.G.Farman
• 通讯作者: A.G.Farman

早川吉彦, 山本一普, 小林紀雄, 光菅裕治, 和光 衛, Farman AG: "Tuned-Aperture Computed Tomography(TACT^【○!R】)の歯科臨床応用(第2報)"歯科放射線. 43・2. 92 (2003)

Yoshihiko Hayakawa、Kazufu Yamamoto、Norio Kobayashi、Yuji Mitsuga、Mamoru Wako、Farman AG：“调谐孔径计算机断层扫描（TACT^ [○！R]）的临床牙科应用（第二次报告）”牙科放射学。 ）

Diagnostic value of tuned-aperture computed tomography versus conventional dento-alveolar imaging in assessment of impacted teeth.

调谐孔径计算机断层扫描与传统牙槽成像在评估阻生牙中的诊断价值。

• 发表时间: 2003
• 期刊: Oral Surgery Oral Medicine Oral Pathology Oral Radiology Endodontics 95・1
• 作者: Yamamoto K;Hayakawa Y;Kousuge Y;Wakoh M;Sekiguchi H;Yakushiji M;Farman AG
• 通讯作者: Farman AG

Tuned-Aperture Computed Tomography(TACT^<【○!R】>) to assess impacted teeth using 2D slices and 3D pseudo-holograms

调谐孔径计算机断层扫描 (TACT^<【○!R】>) 使用 2D 切片和 3D 伪全息图评估受影响的牙齿

• 发表时间: 2002
• 期刊: The Proceeding of the 16th International Congress of Computer Assisted Radiology and Surgery (CARS2002)(Elsevier)
• 作者: K Yamamoto;Y Hayakawa;N Kobayashi;Y Kousuge;M Wakoh;H Sekiguchi;M Yakushiji;A G Farman
• 通讯作者: A G Farman