【示例教程】如何使用LEADTOOLS实现一个简单的PACS查询客户端

本篇教程讲解如何使用相关的接口进行代码编写，实现Dicom协议中的查询操作。

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leadtools提供了封装后的dicom插件，可以非常方便的开发出dicom 通讯部分的组件，本篇教程讲解如何使用相关的接口进行代码编写，实现Dicom协议中的查询操作。 1.用vs2015创建一个winform项目，引用下面的dll，并在代码里引用

using Leadtools;using Leadtools.Dicom;using Leadtools.Dicom.Scu.Common;using Leadtools.Dicom.Scu;using Leadtools.MedicalViewer;using System.Net;using System.IO;

 2.创建下面的对象

// CFind highlevel 对象        private QueryRetrieveScu _cfind;        private DicomScp _server = new DicomScp();        private TreeNode _currentnode;        private MedicalViewer _viewer;

 3.初始化服务器和客户端参数，本次用的服务器即是开发包中运行pacs服务器设置程序后，创建的L19_PACS_SCP64在查询过程中主要是使用MatchStudy和MatchSeries事件来获取相应的结果，使用Moved事件来接收传输过来的图片

private void initServer() {            _server = new DicomScp();            _server.AETitle = "L19_PACS_SCP64";            _server.PeerAddress = IPAddress.Parse("10.32.1.75");            _server.Port = 534;            _server.Timeout = 30;        }

private void initCfind()        {            _cfind = new QueryRetrieveScu();            _cfind.AETitle = "L19_CLIENT64";            _cfind.HostPort = 1030;            //查询Study            _cfind.MatchStudy += _cfind_MatchStudy;            //查询Series            _cfind.MatchSeries += _cfind_MatchSeries;            //MOVE            _cfind.Moved += _cfind_Moved;        }

private void _cfind_MatchSeries(object sender, MatchEventArgs<Series> e)        {            TreeNode seriesnode = new TreeNode(e.Info.Date != null e.Info.Date.Value.ToShortDateString() : "未知");            seriesnode.Tag = e.Info;            _currentnode.Nodes.Add(seriesnode);        }        private void _cfind_MatchStudy(object sender, MatchEventArgs<Study> e)        {            TreeNode studynode = new TreeNode(e.Info.Patient.Name.Full);            studynode.Tag = e.Info;            querytree.Nodes.Add(studynode);        }

public delegate void ReceiveFindMovedDelegate(Leadtools.Dicom.Scu.Common.MovedEventArgs e);        private void _cfind_Moved(object sender, MovedEventArgs e)        {            ReceiveFindMoved(e);        }        //加载图片        void ReceiveFindMoved(MovedEventArgs e) {            if (InvokeRequired)            {                Invoke(new ReceiveFindMovedDelegate(ReceiveFindMoved), e);            }            else            {                ImageInstance instance = e.Instance as ImageInstance;                int cols = 1;                int rows = 1;                RasterImage ri = instance.Images;                if (instance != null && instance.Images != null)                {                    int pageCount = instance.Images.PageCount;                    if (pageCount > 1)                    {                        // Display at most 6 x 6 (36) frames                        if (pageCount >= 36)                        {                            cols = 6;                            rows = 6;                        }                        else                        {                            cols = (int)Math.Floor(Math.Sqrt(pageCount));                            rows = (int)Math.Ceiling((double)pageCount / cols);                        }                    }                    MedicalViewerMultiCell m = GetCell();                    m.Rows = rows;                    m.Columns = cols;                    if (m.Image != null)                    {                        for (int pageIndex = 0; pageIndex < instance.Images.PageCount; pageIndex++)                        {                            instance.Images.Page = pageIndex + 1;                            try                            {                                m.Image.AddPage(instance.Images);                            }                            catch (Exception ex)                            {                                Console.WriteLine(ex.Message);                            }                        }                    }                    else                    {                        m.Image = instance.Images;                    }                    if (pageCount > 1)                    {                        m.SetTag(0, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame);                        m.ShowTags = true;                    }                    m.SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData);                    // Give the medical viewer cell the focus                    if (_viewer.Cells.Count > 0 &&                          _viewer.Cells[0] is MedicalViewerBaseCell)                    {                        (_viewer.Cells[0] as MedicalViewerBaseCell).Selected = true;                    }                    m.SetScaleMode(MedicalViewerScaleMode.Fit);                }            }        }

 
初始化完成后即可使用下面的命令来查询查询study

_cfind.Find(_server, new FindQuery());

 查询特定study的series

FindQuery query = new FindQuery();Study study = td.Tag as Study;query.QueryLevel = QueryLevel.Series;query.PatientId = study.Patient.Id;query.StudyInstanceUID = study.InstanceUID;_cfind.Find(_server, query);

 用Move方法检索图片，参数依次为服务器对象，客户端aetitle，Study InstanceUID，Series InstanceUID

_cfind.Move(_server, _cfind.AETitle, (e.Node.Parent.Tag as Study).InstanceUID, (e.Node.Tag as Series).InstanceUID);

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