A method for real-time viewing of images in telemedicine

Abstract

The invention discloses a real-time image viewing method in telemedicine for super-sized medical images, such as pathological slice images. According to the real-time image viewing method disclosed bythe invention, a partial thumbnail of the image is generated in a server processing mode, a thumbnail mapping method and a caching method of different zooming levels are designed, and a cache updating method is designed to save the storage space. When a client requests image data, and the server firstly determines whether to hit the cache, and generates thumbnails of a specified window and a zoomlevel in real time if the cache is not hit. The client reduces the operation delay of the image tuning window (such as dragging, zooming) by means of preloading. By monitoring a mouse (touch) event,whether the user stays in a certain area is judged through a certain rule, if the user stays in the area, the thumbnails of the next few levels of the staying area are preloaded, and a clear image ofthe target area is viewed in real time.

Description

technical field [0001] The invention belongs to the field of medical image processing, in particular to a method for real-time viewing of images in telemedicine. Background technique [0002] Medical imaging plays an important role in the medical process. Technologies such as MR, CT, DR and CR have been widely used in hospitals. Medical Image Storage System (PACS) is used in hospitals to store and manage various medical images. The traditional PACS is generally a C / S architecture, which is used in scenarios such as remote consultation, and has the disadvantages of complex deployment and high cost. In recent years, with the development of the Internet, Web PACS with B / S architecture has appeared, and medical images can be viewed through browsers on terminal devices such as tablets and mobile phones. However, medical images have the characteristics of high resolution and large file size. Browser-based image browsing needs to solve real-time problems and browsing fluency prob...

AI Technical Summary

Problems solved by technology

However, medical images have the characteristics of high resolution and large file size. Browser-based image browsing needs to solve real-time problems and browsing fluency problems under mobile networks.

[0003] The implementation of Web PACS can be divided into two categories: one method is to convert the image into a JPG of appropriate size on the server side, and then display it on the client side. The disadvantage of this method is that the window needs to be downloaded again during the browsing process. The operation response time is long; the other is to parse the image on the client side. The disadvantage of this method is that the client needs to have the ability to parse the image, and the image file needs to be downloaded once.

However, the size of medical images is often dozens or hundreds of megabytes, while the resolution of pathological slices in the pathology department can reach the order of 10,000×10,000, and the size is at the gigabyte level. May cause lag during browsing

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