Image Quality of an Intraoral Storage Phosphor Imaging System for Crinical Setting

用于临床环境的口内存储荧光成像系统的图像质量

• 批准号: 08672172
• 负责人: NISHMURA Kousuke
• 金额: $ 1.28万
• 依托单位: Kanagawa 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: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08672172/
• 关键词: digital imaging system; imaging plate; computed radiography; intraoral radiography; CRT image; 口内法エックス線撮影

With the digitalization of information concerning imaging diagnosis, many medical devices for digital imaging have been developed. Digora was developed as a digital imaging system in which an imaging plate (IP) is used as an imaging sensor to obtain images of the oral. Since CRT images are used in such digital imaging systems, we made clinical imaging diagnoses based on CRT images using a Digora system to find an optimal IP,and then we attempted to establish parameters for the evaluation of digital imaging systems in the field of dentistry.(1) Characteristics of the digital imaging system with IP were examined by enlargement radiography, etc.to determine its usefulness. (2) The imaging format of Digora was converted to the film output for CR,in order to examine the ability of film images in making accurate diagnosis and that of CRT images. (3) The ability of recognizing normal mandibular anatomy was visually compared using a mandibular phantom between CRT images, conventional film imag … More es, and film images obtained with Digora. As a result, no differences were observed between those 3 kinds of images. (4) The ability to detect proximal surface caries did not differ between the 3 kinds of images. (5) The ability to diagnose decalcification of spongy bone did not differ neither between the 3 kinds of images. (6) From the findings described in (2), (3), (4), and (5), it was revealed that oral diseases could be accurately diagnosed using CRT images, indicating the unnecessity of film output. (7) When the ability to diagnose clinical cases (caries, radicular cyst, apical periodontitis, and marginal periodontitis) was compared between CRT images and film images, no difference was observed. (8) When irradiation time was compared among different types of IP in the Digora system (HR for Digora ; ST for general radiography ; UR for electron microscopic radiography), diagnosis could be made using a HR while an irradiation time was shortened to 1/4 that of D speed film, indicating that a dose could be reduced by using a HR.(9) When physical imaging properties of 3 types of IP were examined, a high MTF was obtained with UR whereas HR showed a satisfactory NEQ at a low dose. (10) As overall evaluation on the findings obtained in (8) and (9), an optimal IP in the Digora system for clinical cases was determined to be HR.We demonstrated the significance of evaluation of image sensors and output images in digital imaging systems and established parameters for the evaluation of digital imaging systems. Less

随着与影像诊断有关的信息的数字化，已经开发了许多用于数字成像的医疗设备。迪戈拉被开发为数字成像系统，其中成像板（IP）被用作成像传感器以获得口腔的图像。由于CRT图像被用于这种数字成像系统中，我们使用迪戈拉系统基于CRT图像进行临床成像诊断以找到最佳IP，然后我们试图建立用于牙科领域中的数字成像系统的评估的参数。(1)通过放大X线摄影检查具有IP的数字成像系统的特性，etc.to确定其有用性。(2)将迪戈拉的图像格式转换为CR的胶片输出，以检查胶片图像和CRT图像的准确诊断能力。(3)用下颌体模比较CRT图像、常规胶片图像和下颌体模对正常下颌骨解剖结构的识别能力。 ...更多信息 es和用迪戈拉获得的胶片图像。结果，在这3种图像之间没有观察到差异。(4)检测近端表面龋的能力在3种图像之间没有差异。(5)3种图像对松质骨脱钙的诊断能力无差异。(6)从（2）、（3）、（4）、（5）的结果可知，使用CRT图像能够正确地诊断口腔疾病，不需要胶片输出。(7)当CRT图像和胶片图像对临床病例（龋齿、根尖囊肿、根尖牙周炎和边缘牙周炎）的诊断能力进行比较时，没有观察到差异。(8)当比较迪戈拉系统中不同类型IP的照射时间时（HR用于迪戈拉; ST用于普通放射摄影; UR用于电子显微镜放射摄影），可以使用HR进行诊断，而照射时间缩短至D速度胶片的1/4，表明可以通过使用HR降低剂量。(9)当检查3种类型IP的物理成像特性时，UR获得了高MTF，而HR在低剂量下显示出令人满意的NEQ。(10)作为对（8）和（9）中获得的结果的总体评价，确定迪戈拉系统中用于临床病例的最佳IP为HR。我们证明了数字成像系统中图像传感器和输出图像评价的重要性，并建立了数字成像系统评价的参数。少

项目成果

西村 光輔: "口腔領域におけるイメージングプレート法X線ディジタル画像の臨床応用に関する研究" INNERVISION. 12巻8号. 60 (1997)

西村浩介：“口腔成像板法X射线数字图像的临床应用研究”INNERVISION，第12卷，第8.60期（1997年）。

Kousuke NISHIMURA: "Image Quality of an Intraoral Storage Phosphor Imaging System for Clinical Setting." INNERVISION. 12 : 8. 60 (1997)

Kousuke NISHIMURA：“用于临床环境的口内存储荧光成像系统的图像质量。”

西村光輔: "Digital Imaging System「Digora」の臨床応用" 日本歯科評論. 652号. 183-189 (1997)

Kosuke Nishimura：“数字成像系统“Digora”的临床应用”日本牙科评论第 652 期。183-189（1997 年）。

西村光輔: "口内撮影専用のコンピューテッドラジオグラフィーDigora^<【○!R】>について" 兵庫県歯科医師会機関誌「歯界月報」. 544号. 17-23 (1996)

Kosuke Nishimura：“关于口腔内摄影的计算机射线照相 Digora^<【○！R】>”兵库县牙科协会杂志“牙科月刊”第 544. 17-23（1996 年）。

西村光輔: "Digital Magnification Radiographyによる骨変化の画像工学的解析" 歯科放射線. 36巻2号. 81-85 (1996)

Kosuke Nishimura：“使用数字放大射线照相对骨骼变化进行图像工程分析”《牙科放射学》第 36 卷，第 2 期 81-85（1996 年）。