بناء متصفح DICOM Metadata في C#: Tutorial الكامل

using Aspose.Medical.Dicom;

public class DicomMetadataViewer
{
    public DicomMetadata ExtractMetadata(string filePath)
    {
        DicomFile dicomFile = DicomFile.Open(filePath);
        var dataset = dicomFile.Dataset;
        
        return new DicomMetadata
        {
            // Patient Information
            PatientName = dataset.GetString(DicomTag.PatientName),
            PatientID = dataset.GetString(DicomTag.PatientID),
            PatientBirthDate = dataset.GetString(DicomTag.PatientBirthDate),
            PatientSex = dataset.GetString(DicomTag.PatientSex),
            PatientAge = dataset.GetString(DicomTag.PatientAge),
            
            // Study Information
            StudyInstanceUID = dataset.GetString(DicomTag.StudyInstanceUID),
            StudyDate = dataset.GetString(DicomTag.StudyDate),
            StudyTime = dataset.GetString(DicomTag.StudyTime),
            StudyDescription = dataset.GetString(DicomTag.StudyDescription),
            AccessionNumber = dataset.GetString(DicomTag.AccessionNumber),
            ReferringPhysician = dataset.GetString(DicomTag.ReferringPhysicianName),
            
            // Series Information
            SeriesInstanceUID = dataset.GetString(DicomTag.SeriesInstanceUID),
            Modality = dataset.GetString(DicomTag.Modality),
            SeriesDescription = dataset.GetString(DicomTag.SeriesDescription),
            SeriesNumber = dataset.GetString(DicomTag.SeriesNumber),
            BodyPartExamined = dataset.GetString(DicomTag.BodyPartExamined),
            
            // Image Information
            SOPInstanceUID = dataset.GetString(DicomTag.SOPInstanceUID),
            SOPClassUID = dataset.GetString(DicomTag.SOPClassUID),
            InstanceNumber = dataset.GetString(DicomTag.InstanceNumber),
            ImageType = dataset.GetString(DicomTag.ImageType),
            
            // Technical Parameters
            Rows = dataset.GetString(DicomTag.Rows),
            Columns = dataset.GetString(DicomTag.Columns),
            BitsAllocated = dataset.GetString(DicomTag.BitsAllocated),
            BitsStored = dataset.GetString(DicomTag.BitsStored),
            PixelSpacing = dataset.GetString(DicomTag.PixelSpacing),
            SliceThickness = dataset.GetString(DicomTag.SliceThickness),
            
            // Equipment Information
            Manufacturer = dataset.GetString(DicomTag.Manufacturer),
            ManufacturerModelName = dataset.GetString(DicomTag.ManufacturerModelName),
            StationName = dataset.GetString(DicomTag.StationName),
            InstitutionName = dataset.GetString(DicomTag.InstitutionName),
            SoftwareVersions = dataset.GetString(DicomTag.SoftwareVersions)
        };
    }
}

public class DicomMetadata
{
    // Patient
    public string PatientName { get; set; }
    public string PatientID { get; set; }
    public string PatientBirthDate { get; set; }
    public string PatientSex { get; set; }
    public string PatientAge { get; set; }
    
    // Study
    public string StudyInstanceUID { get; set; }
    public string StudyDate { get; set; }
    public string StudyTime { get; set; }
    public string StudyDescription { get; set; }
    public string AccessionNumber { get; set; }
    public string ReferringPhysician { get; set; }
    
    // Series
    public string SeriesInstanceUID { get; set; }
    public string Modality { get; set; }
    public string SeriesDescription { get; set; }
    public string SeriesNumber { get; set; }
    public string BodyPartExamined { get; set; }
    
    // Image
    public string SOPInstanceUID { get; set; }
    public string SOPClassUID { get; set; }
    public string InstanceNumber { get; set; }
    public string ImageType { get; set; }
    
    // Technical
    public string Rows { get; set; }
    public string Columns { get; set; }
    public string BitsAllocated { get; set; }
    public string BitsStored { get; set; }
    public string PixelSpacing { get; set; }
    public string SliceThickness { get; set; }
    
    // Equipment
    public string Manufacturer { get; set; }
    public string ManufacturerModelName { get; set; }
    public string StationName { get; set; }
    public string InstitutionName { get; set; }
    public string SoftwareVersions { get; set; }
}

public class DicomTagBrowser
{
    public List<DicomTagInfo> GetAllTags(string filePath)
    {
        DicomFile dicomFile = DicomFile.Open(filePath);
        var tags = new List<DicomTagInfo>();
        
        foreach (var element in dicomFile.Dataset)
        {
            var tagInfo = new DicomTagInfo
            {
                Tag = element.Tag.ToString(),
                TagHex = $"({element.Tag.Group:X4},{element.Tag.Element:X4})",
                Keyword = element.Tag.DictionaryEntry?.Keyword ?? "Unknown",
                Name = element.Tag.DictionaryEntry?.Name ?? "Private Tag",
                VR = element.ValueRepresentation.Code,
                Length = element.Length,
                Value = GetDisplayValue(element)
            };
            
            tags.Add(tagInfo);
        }
        
        return tags;
    }

    private string GetDisplayValue(DicomElement element)
    {
        try
        {
            // Handle different value representations
            if (element.Length == 0)
                return "(empty)";
            
            if (element.Length > 256)
                return $"(binary data, {element.Length} bytes)";
            
            // Try to get string value
            var values = element.Get<string[]>();
            if (values != null && values.Length > 0)
            {
                return string.Join(" \\ ", values);
            }
            
            return "(unable to display)";
        }
        catch
        {
            return $"(binary data, {element.Length} bytes)";
        }
    }
}

public class DicomTagInfo
{
    public string Tag { get; set; }
    public string TagHex { get; set; }
    public string Keyword { get; set; }
    public string Name { get; set; }
    public string VR { get; set; }
    public long Length { get; set; }
    public string Value { get; set; }
}

public class ModalityMetadataExtractor
{
    public object ExtractModalitySpecificData(string filePath)
    {
        DicomFile dicomFile = DicomFile.Open(filePath);
        var dataset = dicomFile.Dataset;
        
        string modality = dataset.GetString(DicomTag.Modality);
        
        return modality switch
        {
            "CT" => ExtractCtMetadata(dataset),
            "MR" => ExtractMrMetadata(dataset),
            "CR" or "DX" => ExtractRadiographyMetadata(dataset),
            "US" => ExtractUltrasoundMetadata(dataset),
            "MG" => ExtractMammographyMetadata(dataset),
            _ => ExtractGenericMetadata(dataset)
        };
    }

    private CtMetadata ExtractCtMetadata(DicomDataset dataset)
    {
        return new CtMetadata
        {
            KVP = dataset.GetString(DicomTag.KVP),
            XRayTubeCurrent = dataset.GetString(DicomTag.XRayTubeCurrent),
            ExposureTime = dataset.GetString(DicomTag.ExposureTime),
            SliceThickness = dataset.GetString(DicomTag.SliceThickness),
            SpacingBetweenSlices = dataset.GetString(DicomTag.SpacingBetweenSlices),
            ConvolutionKernel = dataset.GetString(DicomTag.ConvolutionKernel),
            GantryTilt = dataset.GetString(DicomTag.GantryDetectorTilt),
            TableHeight = dataset.GetString(DicomTag.TableHeight),
            RotationDirection = dataset.GetString(DicomTag.RotationDirection),
            CTDIvol = dataset.GetString(DicomTag.CTDIvol),
            WindowCenter = dataset.GetString(DicomTag.WindowCenter),
            WindowWidth = dataset.GetString(DicomTag.WindowWidth)
        };
    }

    private MrMetadata ExtractMrMetadata(DicomDataset dataset)
    {
        return new MrMetadata
        {
            MagneticFieldStrength = dataset.GetString(DicomTag.MagneticFieldStrength),
            SequenceName = dataset.GetString(DicomTag.SequenceName),
            ScanningSequence = dataset.GetString(DicomTag.ScanningSequence),
            SequenceVariant = dataset.GetString(DicomTag.SequenceVariant),
            RepetitionTime = dataset.GetString(DicomTag.RepetitionTime),
            EchoTime = dataset.GetString(DicomTag.EchoTime),
            InversionTime = dataset.GetString(DicomTag.InversionTime),
            FlipAngle = dataset.GetString(DicomTag.FlipAngle),
            SliceThickness = dataset.GetString(DicomTag.SliceThickness),
            EchoTrainLength = dataset.GetString(DicomTag.EchoTrainLength),
            PixelBandwidth = dataset.GetString(DicomTag.PixelBandwidth),
            ImagingFrequency = dataset.GetString(DicomTag.ImagingFrequency)
        };
    }

    private RadiographyMetadata ExtractRadiographyMetadata(DicomDataset dataset)
    {
        return new RadiographyMetadata
        {
            KVP = dataset.GetString(DicomTag.KVP),
            ExposureTime = dataset.GetString(DicomTag.ExposureTime),
            XRayTubeCurrent = dataset.GetString(DicomTag.XRayTubeCurrent),
            Exposure = dataset.GetString(DicomTag.Exposure),
            ExposureIndex = dataset.GetString(DicomTag.ExposureIndex),
            TargetExposureIndex = dataset.GetString(DicomTag.TargetExposureIndex),
            DeviationIndex = dataset.GetString(DicomTag.DeviationIndex),
            DistanceSourceToDetector = dataset.GetString(DicomTag.DistanceSourceToDetector),
            DistanceSourceToPatient = dataset.GetString(DicomTag.DistanceSourceToPatient),
            Grid = dataset.GetString(DicomTag.Grid),
            ViewPosition = dataset.GetString(DicomTag.ViewPosition)
        };
    }

    private UltrasoundMetadata ExtractUltrasoundMetadata(DicomDataset dataset)
    {
        return new UltrasoundMetadata
        {
            TransducerType = dataset.GetString(DicomTag.TransducerType),
            TransducerFrequency = dataset.GetString(DicomTag.TransducerFrequency),
            DepthOfScanField = dataset.GetString(DicomTag.DepthOfScanField),
            MechanicalIndex = dataset.GetString(DicomTag.MechanicalIndex),
            ThermalIndex = dataset.GetString(DicomTag.SoftTissueThermalIndex),
            FrameTime = dataset.GetString(DicomTag.FrameTime),
            NumberOfFrames = dataset.GetString(DicomTag.NumberOfFrames)
        };
    }

    private MammographyMetadata ExtractMammographyMetadata(DicomDataset dataset)
    {
        return new MammographyMetadata
        {
            ViewPosition = dataset.GetString(DicomTag.ViewPosition),
            ImageLaterality = dataset.GetString(DicomTag.ImageLaterality),
            BreastImplantPresent = dataset.GetString(DicomTag.BreastImplantPresent),
            CompressionForce = dataset.GetString(DicomTag.CompressionForce),
            BodyPartThickness = dataset.GetString(DicomTag.BodyPartThickness),
            AnodeTargetMaterial = dataset.GetString(DicomTag.AnodeTargetMaterial),
            FilterMaterial = dataset.GetString(DicomTag.FilterMaterial),
            KVP = dataset.GetString(DicomTag.KVP),
            ExposureTime = dataset.GetString(DicomTag.ExposureTime),
            OrganDose = dataset.GetString(DicomTag.OrganDose)
        };
    }

    private GenericMetadata ExtractGenericMetadata(DicomDataset dataset)
    {
        return new GenericMetadata
        {
            Modality = dataset.GetString(DicomTag.Modality),
            StudyDescription = dataset.GetString(DicomTag.StudyDescription),
            SeriesDescription = dataset.GetString(DicomTag.SeriesDescription)
        };
    }
}

// Modality-specific metadata classes
public class CtMetadata
{
    public string KVP { get; set; }
    public string XRayTubeCurrent { get; set; }
    public string ExposureTime { get; set; }
    public string SliceThickness { get; set; }
    public string SpacingBetweenSlices { get; set; }
    public string ConvolutionKernel { get; set; }
    public string GantryTilt { get; set; }
    public string TableHeight { get; set; }
    public string RotationDirection { get; set; }
    public string CTDIvol { get; set; }
    public string WindowCenter { get; set; }
    public string WindowWidth { get; set; }
}

public class MrMetadata
{
    public string MagneticFieldStrength { get; set; }
    public string SequenceName { get; set; }
    public string ScanningSequence { get; set; }
    public string SequenceVariant { get; set; }
    public string RepetitionTime { get; set; }
    public string EchoTime { get; set; }
    public string InversionTime { get; set; }
    public string FlipAngle { get; set; }
    public string SliceThickness { get; set; }
    public string EchoTrainLength { get; set; }
    public string PixelBandwidth { get; set; }
    public string ImagingFrequency { get; set; }
}

public class RadiographyMetadata
{
    public string KVP { get; set; }
    public string ExposureTime { get; set; }
    public string XRayTubeCurrent { get; set; }
    public string Exposure { get; set; }
    public string ExposureIndex { get; set; }
    public string TargetExposureIndex { get; set; }
    public string DeviationIndex { get; set; }
    public string DistanceSourceToDetector { get; set; }
    public string DistanceSourceToPatient { get; set; }
    public string Grid { get; set; }
    public string ViewPosition { get; set; }
}

public class UltrasoundMetadata
{
    public string TransducerType { get; set; }
    public string TransducerFrequency { get; set; }
    public string DepthOfScanField { get; set; }
    public string MechanicalIndex { get; set; }
    public string ThermalIndex { get; set; }
    public string FrameTime { get; set; }
    public string NumberOfFrames { get; set; }
}

public class MammographyMetadata
{
    public string ViewPosition { get; set; }
    public string ImageLaterality { get; set; }
    public string BreastImplantPresent { get; set; }
    public string CompressionForce { get; set; }
    public string BodyPartThickness { get; set; }
    public string AnodeTargetMaterial { get; set; }
    public string FilterMaterial { get; set; }
    public string KVP { get; set; }
    public string ExposureTime { get; set; }
    public string OrganDose { get; set; }
}

public class GenericMetadata
{
    public string Modality { get; set; }
    public string StudyDescription { get; set; }
    public string SeriesDescription { get; set; }
}

public class DicomViewerConsole
{
    public void DisplayMetadata(string filePath)
    {
        var viewer = new DicomMetadataViewer();
        var metadata = viewer.ExtractMetadata(filePath);
        
        Console.WriteLine("═══════════════════════════════════════════════════════════");
        Console.WriteLine("                    DICOM METADATA VIEWER                    ");
        Console.WriteLine("═══════════════════════════════════════════════════════════");
        Console.WriteLine($"File: {Path.GetFileName(filePath)}");
        Console.WriteLine();
        
        PrintSection("PATIENT INFORMATION");
        PrintField("Patient Name", metadata.PatientName);
        PrintField("Patient ID", metadata.PatientID);
        PrintField("Birth Date", FormatDate(metadata.PatientBirthDate));
        PrintField("Sex", metadata.PatientSex);
        PrintField("Age", metadata.PatientAge);
        
        PrintSection("STUDY INFORMATION");
        PrintField("Study Date", FormatDate(metadata.StudyDate));
        PrintField("Study Time", FormatTime(metadata.StudyTime));
        PrintField("Description", metadata.StudyDescription);
        PrintField("Accession #", metadata.AccessionNumber);
        PrintField("Referring MD", metadata.ReferringPhysician);
        PrintField("Study UID", metadata.StudyInstanceUID);
        
        PrintSection("SERIES INFORMATION");
        PrintField("Modality", metadata.Modality);
        PrintField("Description", metadata.SeriesDescription);
        PrintField("Series #", metadata.SeriesNumber);
        PrintField("Body Part", metadata.BodyPartExamined);
        PrintField("Series UID", metadata.SeriesInstanceUID);
        
        PrintSection("IMAGE INFORMATION");
        PrintField("Instance #", metadata.InstanceNumber);
        PrintField("Image Type", metadata.ImageType);
        PrintField("Dimensions", $"{metadata.Columns} x {metadata.Rows}");
        PrintField("Bits Stored", metadata.BitsStored);
        PrintField("Pixel Spacing", metadata.PixelSpacing);
        PrintField("SOP Instance", metadata.SOPInstanceUID);
        
        PrintSection("EQUIPMENT");
        PrintField("Manufacturer", metadata.Manufacturer);
        PrintField("Model", metadata.ManufacturerModelName);
        PrintField("Station", metadata.StationName);
        PrintField("Institution", metadata.InstitutionName);
        PrintField("Software", metadata.SoftwareVersions);
        
        Console.WriteLine("═══════════════════════════════════════════════════════════");
    }

    private void PrintSection(string title)
    {
        Console.WriteLine();
        Console.WriteLine($"─── {title} ───");
    }

    private void PrintField(string label, string value)
    {
        string displayValue = string.IsNullOrEmpty(value) ? "(not specified)" : value;
        Console.WriteLine($"  {label,-15}: {displayValue}");
    }

    private string FormatDate(string dicomDate)
    {
        if (string.IsNullOrEmpty(dicomDate) || dicomDate.Length != 8)
            return dicomDate;
        
        return $"{dicomDate.Substring(0, 4)}-{dicomDate.Substring(4, 2)}-{dicomDate.Substring(6, 2)}";
    }

    private string FormatTime(string dicomTime)
    {
        if (string.IsNullOrEmpty(dicomTime) || dicomTime.Length < 6)
            return dicomTime;
        
        return $"{dicomTime.Substring(0, 2)}:{dicomTime.Substring(2, 2)}:{dicomTime.Substring(4, 2)}";
    }
}

[ApiController]
[Route("api/[controller]")]
public class DicomMetadataController : ControllerBase
{
    private readonly string _uploadPath = Path.Combine(Path.GetTempPath(), "dicom_uploads");

    public DicomMetadataController()
    {
        Directory.CreateDirectory(_uploadPath);
    }

    [HttpPost("upload")]
    public async Task<IActionResult> UploadAndExtract(IFormFile file)
    {
        if (file == null || file.Length == 0)
            return BadRequest("No file provided");

        var filePath = Path.Combine(_uploadPath, $"{Guid.NewGuid()}.dcm");
        
        try
        {
            using (var stream = new FileStream(filePath, FileMode.Create))
            {
                await file.CopyToAsync(stream);
            }

            var viewer = new DicomMetadataViewer();
            var metadata = viewer.ExtractMetadata(filePath);
            
            return Ok(metadata);
        }
        finally
        {
            if (System.IO.File.Exists(filePath))
                System.IO.File.Delete(filePath);
        }
    }

    [HttpPost("tags")]
    public async Task<IActionResult> GetAllTags(IFormFile file)
    {
        if (file == null || file.Length == 0)
            return BadRequest("No file provided");

        var filePath = Path.Combine(_uploadPath, $"{Guid.NewGuid()}.dcm");
        
        try
        {
            using (var stream = new FileStream(filePath, FileMode.Create))
            {
                await file.CopyToAsync(stream);
            }

            var browser = new DicomTagBrowser();
            var tags = browser.GetAllTags(filePath);
            
            return Ok(tags);
        }
        finally
        {
            if (System.IO.File.Exists(filePath))
                System.IO.File.Delete(filePath);
        }
    }

    [HttpPost("modality-specific")]
    public async Task<IActionResult> GetModalityMetadata(IFormFile file)
    {
        if (file == null || file.Length == 0)
            return BadRequest("No file provided");

        var filePath = Path.Combine(_uploadPath, $"{Guid.NewGuid()}.dcm");
        
        try
        {
            using (var stream = new FileStream(filePath, FileMode.Create))
            {
                await file.CopyToAsync(stream);
            }

            var extractor = new ModalityMetadataExtractor();
            var data = extractor.ExtractModalitySpecificData(filePath);
            
            return Ok(data);
        }
        finally
        {
            if (System.IO.File.Exists(filePath))
                System.IO.File.Delete(filePath);
        }
    }
}

public class MetadataReportGenerator
{
    public void GenerateCsvReport(string dicomDirectory, string outputPath)
    {
        var viewer = new DicomMetadataViewer();
        var records = new List<string>();
        
        // Header
        records.Add("FileName,PatientID,PatientName,StudyDate,Modality,SeriesDescription,Rows,Columns");
        
        var files = Directory.GetFiles(dicomDirectory, "*.dcm", SearchOption.AllDirectories);
        
        foreach (var file in files)
        {
            try
            {
                var metadata = viewer.ExtractMetadata(file);
                
                var record = string.Join(",",
                    EscapeCsv(Path.GetFileName(file)),
                    EscapeCsv(metadata.PatientID),
                    EscapeCsv(metadata.PatientName),
                    EscapeCsv(metadata.StudyDate),
                    EscapeCsv(metadata.Modality),
                    EscapeCsv(metadata.SeriesDescription),
                    metadata.Rows ?? "",
                    metadata.Columns ?? "");
                
                records.Add(record);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error processing {file}: {ex.Message}");
            }
        }
        
        File.WriteAllLines(outputPath, records);
    }

    public void GenerateJsonReport(string dicomDirectory, string outputPath)
    {
        var viewer = new DicomMetadataViewer();
        var metadataList = new List<object>();
        
        var files = Directory.GetFiles(dicomDirectory, "*.dcm", SearchOption.AllDirectories);
        
        foreach (var file in files)
        {
            try
            {
                var metadata = viewer.ExtractMetadata(file);
                metadataList.Add(new
                {
                    FileName = Path.GetFileName(file),
                    Metadata = metadata
                });
            }
            catch (Exception ex)
            {
                metadataList.Add(new
                {
                    FileName = Path.GetFileName(file),
                    Error = ex.Message
                });
            }
        }
        
        var json = JsonSerializer.Serialize(metadataList, new JsonSerializerOptions 
        { 
            WriteIndented = true 
        });
        
        File.WriteAllText(outputPath, json);
    }

    private string EscapeCsv(string value)
    {
        if (string.IsNullOrEmpty(value))
            return "";
        
        if (value.Contains(",") || value.Contains("\"") || value.Contains("\n"))
        {
            return $"\"{value.Replace("\"", "\"\"")}\"";
        }
        
        return value;
    }
}

class Program
{
    static void Main(string[] args)
    {
        // Activate license
        Metered metered = new Metered();
        metered.SetMeteredKey("your-public-key", "your-private-key");

        string dicomFile = @"C:\DICOM\sample.dcm";
        
        // Console viewer
        var consoleViewer = new DicomViewerConsole();
        consoleViewer.DisplayMetadata(dicomFile);
        
        // Browse all tags
        var browser = new DicomTagBrowser();
        var tags = browser.GetAllTags(dicomFile);
        
        Console.WriteLine($"\nTotal tags: {tags.Count}");
        
        // Generate report for directory
        var reportGenerator = new MetadataReportGenerator();
        reportGenerator.GenerateCsvReport(@"C:\DICOM\Studies", @"C:\Reports\metadata.csv");
    }
}