KEY-IMAGE ATTACHED ON-LINE DIGITAL REPORTING SYSTEM IN RADIOLOGICAL PRACTICE

近年来，CT、MRI、SPECT和PET在临床上得到了广泛的应用，每一项研究的图像数量都在迅速增加。这些图像由放射科医生和核内科医生进行解释，并将结果报告给临床医生。然而，对于忙碌的临床医生来说，根据报告的描述从大量图像中选择关键图像往往是困难的。因此，我们试图开发一种报告系统，其中关键的数字图像附在报告的描述上。本系统的设计思想如下：1.关键图像显示在医院信息系统(HIS)终端计算机上常用的CRT上。2.在保持足够的诊断信息的前提下，对关键图像进行尽可能多的压缩。3.关键图像与报告相辅相成。4.只有当临床医生对报告有疑问或不同意报告，并希望与Radiolog…讨论时，才使用原始图像对CT、MRI和核素扫描图像的数据压缩进行了研究。原始图像在CRT上显示为256x256Pix1和8bit/Pix1，用JPEG软件进行压缩。16名观察员根据两种评价标准对压缩图像进行评估。标准是观察者首先注意到图像质量恶化的压缩程度，其次是观察者首先注意到图像上病变特征的变化的压缩程度。在第一和第二标准下，图像数据平均能够分别压缩到16.3KB和11.7KB。在第二个标准中，观察者之间的结果差异比第一个标准中的结果的方差要大。这些图像是作为电子邮件的附件发送的。所附关键影像报告受到临床医生的好评。这一系统在报告SPECT方面特别有用。较少

Recently, CT, MRI, SPECT and PET have been widely used in clinical practice and a number of images per each study has increased rapidly. The images are interpreted by radiologists and nuclear physicians, and the results are reported to the clinicians. It is, however, often difficult for busy clinicians to select the key images among the large number of images according to the description of the report. We, therefore, have tried to develop a reporting system in which the key digital images are attaching to the description of the report. The concepts of our system are as following : 1. The key images are displayed on the usual CRT of the terminal computer on the hospital information system(HIS). 2. The key images are compressed as much as possible within keeping information enough for diagnosis. 3. The key images are complementary to the report. 4. The original images are used by clinicians only when they have questions or are disagree to the report, and want to discuss with the radiolog … More ists.Image data compression was studied in the images of CT, MRI and scintigram. The original images displayed on the CRT as 256x256pixe1 and 8bit/pixel were compression by the soft-ware of JPEG.The compressed images were evaluated by 16 observers according to the two appraisal standards : the first. standard was the compression degree in which the deterioration of the image quality was first noticed by the observer and the second was the compression degree in which the change of the lesion characteristic on the image was first noticed by the observer. With the first and second standard, the image data were be able to be compressed on average to 16.3KB and 11.7KB, respectively. In the second standard, the variants of the results among observers were larger than those of in the first standard.The image attached reporting system was experimented between the two hospitals using Internet. The images were sent as attaching files to the e-mail. The key-image attached reports were accepted favorably by the clinicians. This system was especially useful in reporting the SPECT. Less