LaurelBridge.DCF.Examples.DicomDirOps Namespace
LAUREL BRIDGE

LaurelBridge.DCF.Examples.DicomDirOps Namespace

DICOM Connectivity Framework V3.4
The DicomDirOps example demonstates how to use DCF to perform file set operations related to DICOMDIRs.
Classes

  ClassDescription
Public classProgram
This example demonstrates how to create a new DICOMDIR, and how to update an existing one.
Examples

DicomDirOps Sample Code
public class Program
{
    private static readonly ILogger Logger = LogManager.GetCurrentClassLogger();

    /// <summary>
    /// Main entry point for DicomDirOps.
    /// </summary>
    [STAThread]
    public static void Main()
    {
        try
        {
            string assemblyLocation = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            if (String.IsNullOrEmpty(assemblyLocation))
                assemblyLocation = ".";
            string imagesDir = Path.Combine(assemblyLocation, "ExampleDicomDir");
            string study1ImagesDir = Path.Combine(imagesDir, "Study1");
            string study2ImagesDir = Path.Combine(imagesDir, "Study2");
            string dicomDirFilePath = Path.Combine(imagesDir, "DICOMDIR");

            // Delete the existing DICOMDIR file
            if (File.Exists(dicomDirFilePath))
            {
                File.Delete(dicomDirFilePath);
            }

            // Create the DicomDirectoryRecord using the given directory tree and save to disk
            DicomDir dicomDir = FileSetCreate(study1ImagesDir);
            Logger.InfoFormat("Dicom Directory Record:{0}{1}", Environment.NewLine, dicomDir.RootDir);
            dicomDir.Save(dicomDirFilePath);

            // Now update the existing DicomDirectoryRecord using the given directory
            DicomDir updatedDicomDir = FileSetUpdate(dicomDirFilePath, study2ImagesDir);
            Logger.InfoFormat("Updated Dicom Directory Record:{0}{1}", Environment.NewLine, updatedDicomDir.RootDir);
            updatedDicomDir.Save(dicomDirFilePath);
        }
        catch (Exception e)
        {
            Console.WriteLine("Exception caught during execution: {0}", e);
        }

        if (Debugger.IsAttached)
        {
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey();
        }
    }

    /// <summary>
    /// Creates a new Dicom Directory Record from the list of files contained in the given input directory.
    /// </summary>
    /// <param name="imageDir">The directory containing the images to add to the directory record.</param>
    /// <returns>The Dicom Directory Record containing information about the containing files from the input
    /// directory path, or null if there was an error.</returns>
    private static DicomDir FileSetCreate(string imageDir)
    {
        DicomDir dicomDir = new DicomDir();

        DirectoryInfo di = new DirectoryInfo(imageDir);

        // Our example Dicom files have the '.dcm' extension, but this is by no means mandatory.
        foreach (FileInfo file in di.GetFiles("*", SearchOption.AllDirectories))
        {
            // ignore any .txt file in the directory
            if (file.Extension == ".txt")
                continue;

            using (DicomFileInput dfi = new DicomFileInput(file.FullName))
            {
                DicomDataSet imageDs = dfi.ReadDataSetNoPixels();

                DicomDirectoryRecord root = dicomDir.RootDir;
                PatientDirectoryRecord patient = PatientDirectoryRecord.Find(root, imageDs, true, true);
                StudyDirectoryRecord study = StudyDirectoryRecord.Find(patient, imageDs, true, true);
                SeriesDirectoryRecord series = SeriesDirectoryRecord.Find(study, imageDs, true, true);
                if (ImageDirectoryRecord.Exists(series, imageDs))
                {
                    throw new InvalidOperationException("a matching image record already exists under that series");
                }
                ImageDirectoryRecord image = ImageDirectoryRecord.Create(series, imageDs, true);
                image.ReferencedFileId = file.Name;
            }
        }

        return dicomDir;
    }

    private static DicomDir FileSetUpdate(string dicomDirFilePath, string dir)
    {
        DicomDir dicomDir = new DicomDir(dicomDirFilePath);

        DirectoryInfo di = new DirectoryInfo(dir);

        // Our example Dicom files have the '.dcm' extension, but this is by no means mandatory.
        foreach (FileInfo file in di.GetFiles("*", SearchOption.AllDirectories))
        {
            // ignore any .txt file in the directory
            if (file.Extension == ".txt")
                continue;

            using (DicomFileInput dfi = new DicomFileInput(file.FullName))
            {
                DicomDataSet imageDs = dfi.ReadDataSetNoPixels();

                DicomDirectoryRecord root = dicomDir.RootDir;
                PatientDirectoryRecord patient = PatientDirectoryRecord.Find(root, imageDs, true, true);
                StudyDirectoryRecord study = StudyDirectoryRecord.Find(patient, imageDs, true, true);
                SeriesDirectoryRecord series = SeriesDirectoryRecord.Find(study, imageDs, true, true);
                if (ImageDirectoryRecord.Exists(series, imageDs))
                {
                    throw new InvalidOperationException("a matching image record already exists under that series");
                }
                ImageDirectoryRecord image = ImageDirectoryRecord.Create(series, imageDs, true);
                image.ReferencedFileId = file.Name;
            }
        }

        return dicomDir;
    }