C# 实现医学影像 DICOM 工作站(2):Dicom影像导入和工作列表

系列文章

1.C# 实现医学影像 DICOM 工作站(1):项目介绍

2.C# 实现医学影像 DICOM 工作站(2):Dicom影像导入和工作列表

3.C# 实现医学影像 DICOM 工作站(3):实现Dicom影像的展示

4.C# 实现医学影像 DICOM 工作站(4):实现Dicom影像的调窗,缩放,移动,旋转,透镜等功能

5.C# 实现医学影像 DICOM 工作站(5):实现Dicom影像序列的多平面重建(MPR)

6.C# 实现医学影像 DICOM 工作站(6):使用VTK实现影像序列的体绘制(VR)

7.C# 实现医学影像 DICOM 工作站(7):使用AI功能完成肺间质性疾病(ILD)的分析和源码下载

核心代码:

  private async void StartTask(){bool isImport = false;try{var fileInfos = await Task.Run(() =>{DirectoryInfo dir = new DirectoryInfo(SelectPath);var files = dir.GetFiles("*.*", SearchOption.AllDirectories);return files;});llLoading.Visibility = Visibility.Hidden;llLoadBar.Visibility = Visibility.Visible;llLoadBar.Value = 0;llLoadBar.Minimum = 0;llLoadBar.Maximum = fileInfos.Length;Action<string> actionBar = new Action<string>(UpdateBar);Action<string> actionMsg = new Action<string>(UpdateMsg);Dictionary<string, DcmSeries> dic = new Dictionary<string, DcmSeries>();await Task.Run(() =>{foreach (var fileInfo in fileInfos){try{this.Dispatcher.BeginInvoke(actionBar, fileInfo.FullName);var suffix = fileInfo.Extension.ToLower();if (suffix == ".dcm" || string.IsNullOrEmpty(suffix)){if (!DicomFile.HasValidHeader(fileInfo.FullName)){continue;}var file = DicomFile.Open(fileInfo.FullName);var data = file.Dataset;var seriesIuid = data.GetValueOrDefault<string>(DicomTag.SeriesInstanceUID, 0, null);if (string.IsNullOrEmpty(seriesIuid)){continue;}if (!dic.ContainsKey(seriesIuid)){var dcmSeries = new DcmSeries();dcmSeries.SeriesIuid = seriesIuid;dcmSeries.AccessionNo = data.GetValueOrDefault<string>(DicomTag.AccessionNumber, 0, null);dcmSeries.PatientName = data.GetValueOrDefault<string>(DicomTag.PatientName, 0, null);dcmSeries.PatientName = DicomUtil.GetPatientName(dcmSeries.PatientName);dcmSeries.Gender = data.GetValueOrDefault<string>(DicomTag.PatientSex, 0, null);dcmSeries.Modality = data.GetValueOrDefault<string>(DicomTag.Modality, 0, null);dcmSeries.PatientBrithDate = data.GetValueOrDefault<string>(DicomTag.PatientBirthDate, 0, null);dcmSeries.PatientId = data.GetValueOrDefault<string>(DicomTag.PatientID, 0, null);dcmSeries.SeriesDescription = data.GetValueOrDefault<string>(DicomTag.SeriesDescription, 0, null);dcmSeries.StudyDate = data.GetValueOrDefault<string>(DicomTag.StudyDate, 0, null);dcmSeries.StudyId = data.GetValueOrDefault<string>(DicomTag.StudyID, 0, null);dcmSeries.SeriesNumber = data.GetValueOrDefault<string>(DicomTag.SeriesNumber, 0, null);dcmSeries.Thinkness = data.GetValueOrDefault<string>(DicomTag.SliceThickness, 0, null);dcmSeries.FileCount = 0;dcmSeries.DicomFiles = new List<DcmFile>();dic.Add(seriesIuid, dcmSeries);}DcmSeries temSeries = dic[seriesIuid];DcmFile dcmFile = new DcmFile();dcmFile.InstanceNumbder = data.GetValueOrDefault<int>(DicomTag.InstanceNumber, 0, 1);dcmFile.SliceLocation = data.GetSingleValue<double>(DicomTag.SliceLocation);dcmFile.InstanceUid = data.GetValueOrDefault<string>(DicomTag.SOPInstanceUID, 0, null);dcmFile.Path = fileInfo.FullName;temSeries.DicomFiles.Add(dcmFile);}}catch (Exception ex){}}if (dic.Count > 0){isImport = true;this.Dispatcher.BeginInvoke(actionMsg, "正在进行归档.......");using (DicomDBContext db = DicomDBContext.getInstance()){foreach (var item in dic){string seriesUID = item.Key;var tem = db.DcmSerieses.Where(m => m.SeriesIuid == seriesUID).ToList();DcmSeries series = null;if (tem.Count() > 0){series = tem.First();db.DcmSerieses.Remove(series);var temList = db.DcmFiles.Where(m => m.SeriesId == series.Id).ToList();db.DcmFiles.RemoveRange(temList);db.SaveChanges();}series = item.Value;var listFiles = series.DicomFiles;series.DicomFiles = null;series.LastModified = DateTime.Now;series.FileCount = listFiles.Count;db.DcmSerieses.Add(series);db.SaveChanges();foreach (var dcmFile in listFiles){dcmFile.SeriesId = series.Id;}db.DcmFiles.AddRange(listFiles);db.SaveChanges();}}}});}catch (Exception ex){HandyControl.Controls.MessageBox.Show(ex.Message, "错误信息", MessageBoxButton.OK, MessageBoxImage.Error);}finally{this.Close();if (isImport){EventBus.Instance().TriggerReloadWorkList();}}}

核心代码讲解:

1. 代码首先完成获取目录下包括子目录中所有的文件

2.使用Fo-Dicom对所有文件进行判断,判断是否是DICOM文件

3.对于是Dicom的文件进行解析.对于工作站,和普通的PACS终端不同,我们使用Series作为工作列表的层级,方便处理.

DIcom中一般存在这样的层级关系Patient->Study->Series->Instance,即一般情况下,一个病人有多个检查,一个检查存在多个序列,一个序列有可能有多个实例.

我们这里使用Series作为工作列表的层级.

4.在获取获取序列底下所有dicom文件的同时,获取InstanceNumbder ,后面我将用该属性对序列文件进行排序.

5.数据库入库,保存为2个表,一个是Series表,主要记录检查相关信息,一个是File表,用来记录该序列所包含的文件