Diagnostic Performance in PACS Workstation.

PACS 工作站中的诊断性能。

• 批准号: 01570587
• 负责人: NAKANO Yoshihisa
• 金额: $ 1.22万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01570587/
• 关键词: Radiographs; Pata compression; CRT; CRT診断

We investigated a clinically safe compression ratio of radiographs. Fifty-four 2048 square digitized radiographs were compressed with non-uniform block coding method and displayed in a 1000-line CRT or in a laser printer films. Ninety two pairs of compressed and original images trimmed into 1024 square ROIs were observed by 3 radiologists on the displaying windows optimum for each pair of images. The differnces between compressed and original images were evaluated with the following results : (1) Using the ratio of 12, some differences were recognized on both anatomic and pathologic structures in 60% on CRTs and 79% on films. (2) With the ratio of 8, some differences were recognized on anatomic structures in 7% and 10% respectively. (3) With the ratio of 5, no differences were found on anatomical structures. We concluded that the data compression ratio 5 is the absolutely safe and the ratio 8 is a relatively safe in clinical diagnosis.

我们研究了放射线照片的临床安全压缩比。使用非均匀的块编码方法压缩了54个2048平方数字化的X光片，并以1000线CRT或激光打印机膜显示。在显示每对图像的窗户最佳的窗户上，观察到了92对压缩和原始图像，并将其修剪成1024平方ROI。评估了压缩图和原始图像之间的不同结果：（1）使用12的比率，CRT的60％的解剖学和病理结构在60％的解剖学和病理结构上都识别出一些差异，而在膜上识别出79％的差异。 （2）以8比率为8，分别在7％和10％的解剖结构上识别出一些差异。 （3）比率为5，在解剖结构上没有发现差异。我们得出的结论是，数据压缩比5是绝对安全的，而比率8在临床诊断中相对安全。

项目成果

Minato K: "PACS development at Kyoto Univ.Hosp." Medical Imaging,Proc.SPIE. (1989)

Minato K：“京都大学医院的 PACS 开发。”

Kotarou Minato: "PACS prototype at Kyoto University Hospital" Proc.Medonfoー89. 389-392 (1989)

Kotarou Minato：“京都大学医院的 PACS 原型”Proc.Medonfo-89 (1989)。

Kotarou Minato: "PACS Development at Kyoto University Hospital Towand Integrat Digital Imaging Modalities" SPIE Medical Imaging. 1093. 20-23 (1989)

Kotarou Minato：“京都大学医院的 PACS 开发 Towand Integrat 数字成像模式”SPIE 医学成像。

中野善久: "京大病院PACSの現状映像情報" 21. 1989. (316-320)

Yoshihisa Nakano：“京都大学医院 PACS 的当前视频信息”21. 1989. (316-320)

Y. Nakano et al.: "Present Status of PACS at Kyoto University Hospital" Abstracts of Japan-Nordic IMACS Symposium. (1990)

Y. Nakano 等人：“京都大学医院 PACS 的现状”日本-北欧 IMACS 研讨会摘要。