【作者】 吴刚；

【导师】 赫枫龄；

【作者基本信息】 吉林大学 ， 工程硕士（专业学位）， 2016， 硕士

【摘要】 本文针对国民生活中医疗领域影像胶片获取时间长的问题,提出了一种基于微信终端的访问接口设计。通过对影像学领域相关技术的学习,了解了影像传输的接口协议,在此基础之上对于医疗机构的X光和CT两种设备进行了影像数据接口的提取,实现了由影像设备到服务器数据的传输。在获取了影像数据之后,搭建了与微信进行交互的服务器,并对服务器的性能进行了测试。整个课题工作共分为如下六个方面:1.影像学领域调研首先对常见的医学影像设备分类进行了调研。主要有X射线机,CT设备,核磁共振设备和超声成像设备四大类。其中CT和X射线为二维数据,而核磁共振产生的图像为三维数据,查看时需要专门的软件进行解析查看。影像设备统一遵循DICOM接口,该接口是美国放射协会和电气设备协会共同制定。最新标准为3.0版本,记录了数据格式、传输的硬件指标等等。重点研究了数据格式和通信协议对于通信接口设计的影响。2.X射线机影像数据的传输传统的X射线机输出文件为jpg格式的图片,对于旧式的X射线机仅仅支持电脑端查看,并不支持DICOM数据传输,因此对于其数据仅仅通过普通的TCP/IP协议来实现传输。通过对影像数据设备进行服务器的搭建,在另外一台网内服务器实现了对其图像数据的访问。3.CT数据的传输CT的图像数据也属于二维数据,由于CT的发展比X射线机较晚,因此大部分的CT设备都具有网络访问功能,通信协议均为DICOM。因此对于CT数据的获取通过DICOM协议可以直接获取。4.前端微信接口设计通过对微信原理的分析,设计了微信前端接口。实现了用户身份信息验证和影像数据查询的基本功能。对于身份验证通过手机号,数据库信息和时间三者同步计算,增加了数据的安全性。对于影像数据查询,主要解决了尺寸不匹配问题。5.服务器的搭建服务器系统共有4台服务器组成。其中一台为主服务器。另外三个为辅助服务器。辅助服务器一主要用于实现冗余。通过和主服务器交替工作来实现访问接口的不间断工作。辅助服务器二主要用于数据的管理,当有新的医学影像设备加入到整个系统时,可通过该系统进行数据的更新,同时当各个科室的影像数据及病人诊断信息有更新时,该服务器负责更新数据。辅助服务器三则主要用于对某一类影像数据进行批量的图像处理,并将处理后的图像放置到固定位置,对于教学和学术研讨时,可以从该位置获取相关数据,也可以通过其他的终端接口进行诊断信息的上传。该服务器的另外一个功能是将一些研讨科学成果推送至微信平台,促进影像教学的交流探讨。6.服务器的测试对于服务器的性能测试主要针对并发进行了测试。测试项目有请求响应时间测试、并发用户数、事物响应时间测试和系统硬件瓶颈四个大方面。最终经过测试满足系统最低每分钟访问量2000人的需求。更多还原

【Abstract】 A new design based on We Chat for the interface of Medical image is introduced. It mainly focus on the problem of people may wait a long time to get the film. Also the film is not easily storing for long time. So the related knowledge should be learnt first especially the communication protocol how to define the file formation. After these preparation the X-Ray machine and CT machine interfaces are got. Function transmitting from 2 machine to a PC through internet is implemented. At last a server communicated with We Chat is set up. It performance is tested. All content can be divided 6 parts.1. Investigation on ImagingMedical Imaging device are being investigated at first. It can be classified 4 different of kinds. They are CT, X-Ray, MRI and ultrasonic imaging device. CT and X-Ray machine output two-dimensional image, while MRI output three-dimensional image. So when checking the MIR image needs special software to view. Imaging machine follows the DICOM(Digital Imaging and Communication of Medicine) interface. This interface is defined by ACR(American College of Radiology) and NEMA(National Electrical Manufacturers Association). The newest version for DICOM is 3.0. It records the data format hardware type and communication protocol.2. X-Ray machine data communicationTraditional X-Ray machine output jpg files. For old X-Ray machine it only supports offline checking, not support DICOM checking. So TCP can satisfy demands by only sending jpg files. An environment is set on the computer and another server can use a IP to access the file.3. CT machine data communicationCT also outputs two-dimensional image. As it developed in recent years, it owns DICOM interface comparing to X-Ray machine. So the interface can use DICOM to access the data file.4. Design of We Chat interfaceAfter analyzing the We Chat principle, the interface used for communicating with We Chat is designed. The identification and data access have been implanted. For the identification, phone message is used. When a request is send, software will calculate the 6 number according to ID, data base state and time. This step adds data safety. For data access, the image dissatisfy We Chat problem is solved.5. Server Setting UpServer machine includes 4 machine. One is primary and the other 3 machine are redundancy. The redundancy machine No 1 is used to information redundancy. It will works by turn with primary machine. These 2 machine can make system work for a long time. The redundancy machine No 2 is used to manage data. When a new imaging device is added into system, it will update local information. Meanwhile when new image is created or new patient information is created, it also will do some action. The redundancy machine No 3 is used to deal with images in bulk. These images will be put in a specific location. When teaching or reviewing, they will become precious materials. Also the diagnostic information will be upload after talking. The No3 machine can send some research results to We Chat for imaging teaching.6. Server TestServer test mainly focus on concurrency testing. It includes response time, concurrency users, case response time and hardware limitation. At last an inclusion can be made that it can satisfy 2000 access per minute demand.更多还原