Slomka P J, Elliott E, Driedger A A
Department of Diagnostic Radiology, University of Western Ontario, London, Canada.
J Nucl Med. 2000 Jan;41(1):111-8.
In nuclear medicine practice, images often need to be reviewed and reports prepared from locations outside the department, usually in the form of hard copy. Although hard-copy images are simple and portable, they do not offer electronic data search and image manipulation capabilities. On the other hand, picture archiving and communication systems or dedicated workstations cannot be easily deployed at numerous locations. To solve this problem, we propose a Java-based remote viewing station (JaRViS) for the reading and reporting of nuclear medicine images using Internet browser technology.
JaRViS interfaces to the clinical patient database of a nuclear medicine workstation. All JaRViS software resides on a nuclear medicine department server. The contents of the clinical database can be searched by a browser interface after providing a password. Compressed images with the Java applet and color lookup tables are downloaded on the client side. This paradigm does not require nuclear medicine software to reside on remote computers, which simplifies support and deployment of such a system. To enable versatile reporting of the images, color tables and thresholds can be interactively manipulated and images can be displayed in a variety of layouts. Image filtering, frame grouping (adding frames), and movie display are available. Tomographic mode displays are supported, including gated SPECT.
The time to display 14 lung perfusion images in 128 x 128 matrix together with the Java applet and color lookup tables over a V.90 modem is <1 min. SPECT and PET slice reorientation is interactive (<1 s). JaRViS could run on a Windows 95/98/NT or a Macintosh platform with Netscape Communicator or Microsoft Intemet Explorer. The performance of Java code for bilinear interpolation, cine display, and filtering approaches that of a standard imaging workstation.
It is feasible to set up a remote nuclear medicine viewing station using Java and an Internet or intranet browser. Images can be made easily and cost-effectively available to referring physicians and ambulatory clinics within and outside of the hospital, providing a convenient alternative to film media. We also find this system useful in home reporting of emergency procedures such as lung ventilation-perfusion scans or dynamic studies.
在核医学实践中，图像通常需要在科室以外的地点进行查看并撰写报告，通常以硬拷贝形式呈现。尽管硬拷贝图像简单且便于携带，但它们不具备电子数据搜索和图像处理功能。另一方面，图像存档与通信系统或专用工作站无法轻易部署在众多地点。为解决这一问题，我们提出了一种基于Java的远程查看站（JaRViS），用于利用互联网浏览器技术读取和报告核医学图像。
JaRViS与核医学工作站的临床患者数据库相连接。所有JaRViS软件都驻留在核医学科室的服务器上。在提供密码后，可通过浏览器界面搜索临床数据库的内容。带有Java小程序和颜色查找表的压缩图像在客户端下载。这种模式不需要核医学软件驻留在远程计算机上，从而简化了此类系统的支持和部署。为实现对图像的通用报告，颜色表和阈值可进行交互式操作，图像可按多种布局显示。具备图像滤波、帧分组（添加帧）和电影显示功能。支持断层扫描模式显示，包括门控SPECT。
通过V.90调制解调器显示128×128矩阵的14幅肺灌注图像以及Java小程序和颜色查找表的时间不到1分钟。SPECT和PET切片重新定位是交互式的（<1秒）。JaRViS可在装有Netscape Communicator或Microsoft Internet Explorer的Windows 95/98/NT或Macintosh平台上运行。用于双线性插值、电影显示和滤波的Java代码性能与标准成像工作站相当。
利用Java和互联网或内联网浏览器建立远程核医学查看站是可行的。可为医院内外的转诊医生和门诊诊所轻松且经济高效地提供图像，为胶片介质提供了一种便捷的替代方式。我们还发现该系统在诸如肺通气-灌注扫描或动态研究等急诊程序的居家报告中很有用。
