实例介绍
【实例简介】医学dicom游览器C#源码
【实例截图】
【核心代码】
using Dicom;
using Dicom.Imaging;
using Dicom.Imaging.Codec;
using DICOMBrower.Command;
using DICOMBrower.Utils;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Reflection;
using System.Windows.Input;
using System.Windows.Media.Imaging;
namespace DICOMBrower.ViewModel
{
class DICOMViewModel : NotifyPropertyObject
{
#region 属性
/// <summary>
/// DICOM文件
/// </summary>
DicomFile _dicomFile;
DicomImage _dicomImage;
BitmapImage _image;
double _defaultWidth;
double _defaultHeight;
double _pointX;
double _pointY;
Cursor _cur;
List<Model.Dicom> _dicomElements = new List<Model.Dicom>();
#endregion
#region 字段
public DicomFile DcmFile
{
get => _dicomFile; set
{
_dicomFile = value;
RasiePropertyChanged("DcmFile");
}
}
public DicomImage DcmImage
{
get => _dicomImage; set
{
_dicomImage = value;
RasiePropertyChanged("DcmImage");
}
}
public BitmapImage Image
{
get => _image; set
{
_image = value;
RasiePropertyChanged("Image");
}
}
public Cursor Cur
{
get => _cur; set
{
_cur = value;
RasiePropertyChanged("Cur");
}
}
public List<Model.Dicom> DicomElements
{
get => _dicomElements; set
{
_dicomElements = value;
RasiePropertyChanged("DicomElements");
}
}
#endregion
#region 方法
private void SetDicomWinWidthWinCenter()
{
}
#endregion
public DelegateCommand OpenFile
{
get
{
return new DelegateCommand((obj) =>
{
// 在WPF中， OpenFileDialog位于Microsoft.Win32名称空间
Microsoft.Win32.OpenFileDialog dialog =
new Microsoft.Win32.OpenFileDialog
{
Filter = "dicom影像|*.dcm"
};
if (dialog.ShowDialog() == false)
{
return;
//lblFileName.Content = dialog.FileName;
}
_dicomFile = DicomFile.Open(dialog.FileName);
DicomFile newDcmFile = null;
// 如果Dicom图像是压缩过的 可能有问题
if (_dicomFile.FileMetaInfo.TransferSyntax.IsEncapsulated)
{
// 转换DICOM传输语法
DicomTranscoder dicomTranscoder = new DicomTranscoder(_dicomFile.FileMetaInfo.TransferSyntax, DicomTransferSyntax.ExplicitVRLittleEndian);
newDcmFile = dicomTranscoder.Transcode(_dicomFile);
}
DicomDataset dicomDataset = newDcmFile == null ? _dicomFile.Dataset : newDcmFile.Dataset;
//// 注意点：获取的像素值需要进行转化 实际像素值 = RescaleSlope * 获取像素值 RescaleIntercept，若BitsAllocated超过8会超出颜色值的表示范围0~255需要对其进行转化.
////读取dcm格式文件里相关元素值
//var strInstanceNumber = dicomDataset.GetString(DicomTag.InstanceNumber);
//var nWidth = dicomDataset.GetSingleValue<int>(DicomTag.Columns);
//var nHeight = dicomDataset.GetSingleValue<int>(DicomTag.Rows);
//// 窗宽
//var dWindowWidth = dicomDataset.GetSingleValue<double>(DicomTag.WindowWidth);
//// 窗位
//var dWindowCenter = dicomDataset.GetSingleValue<double>(DicomTag.WindowCenter);
//// 1表示灰度图像3表示彩色图像
//var nSamplesPerPixel = dicomDataset.GetSingleValueOrDefault<int>(DicomTag.SamplesPerPixel, 1);
//// 像素值的比例系数
//var dRescaleSlope = dicomDataset.GetSingleValueOrDefault<double>(DicomTag.RescaleSlope, 1);
//// 像素值的比例参数
//var dRescaleIntercept = dicomDataset.GetSingleValueOrDefault<double>(DicomTag.RescaleIntercept, 0);
//// 每一种颜色值所分配的存储位数
//var nBitsAllocated = dicomDataset.GetSingleValue<int>(DicomTag.BitsAllocated);
//// 像素值存储的最高位
//var nHighBit = dicomDataset.GetSingleValue<int>(DicomTag.HighBit);
//var strNumberOfFrames = String.Empty;
//dicomDataset.TryGetString(DicomTag.NumberOfFrames, out strNumberOfFrames);
//// 像素
//DicomElement dicomElement = dicomDataset.GetDicomItem<DicomElement>(DicomTag.PixelData);
//byte[] pixData = dicomElement.Buffer.Data;
// 解析DICOM数据
List<Model.Dicom> dicomElements = new List<Model.Dicom>();
//_dicomElements.Clear();
Type type = typeof(DicomTag);
FieldInfo[] fieldInfos = type.GetFields(BindingFlags.Public | BindingFlags.Static);
DicomElement dicomElement;
foreach (var field in fieldInfos)
{
dicomElement = dicomDataset.GetDicomItem<DicomElement>((DicomTag)field.GetValue(null));
if (dicomElement != null)
{
Model.Dicom dicom = new Model.Dicom
{
Tag = dicomElement.Tag.ToString(),
Vr = dicomElement.ValueRepresentation.ToString(),
Vm = dicomElement.Count,
Vl = (int)dicomElement.Length,
Value = dicomElement.Get<string>(),
Name = dicomElement.Tag.DictionaryEntry.Name
};
dicomElements.Add(dicom);
}
dicomElement = _dicomFile.FileMetaInfo.GetDicomItem<DicomElement>((DicomTag)field.GetValue(null));
if (dicomElement != null)
{
Model.Dicom dicom = new Model.Dicom
{
Tag = dicomElement.Tag.ToString(),
Vr = dicomElement.ValueRepresentation.ToString(),
Vm = dicomElement.Count,
Vl = (int)dicomElement.Length,
Value = dicomElement.Get<string>(),
Name = dicomElement.Tag.DictionaryEntry.Name
};
dicomElements.Add(dicom);
}
}
DicomElements = dicomElements;
_dicomImage = new DicomImage(dicomDataset);
// 设置默认DICOM影像窗宽窗位
_defaultWidth = _dicomImage.WindowWidth;
_defaultHeight = _dicomImage.WindowCenter;
// 将DICOM影像装换为bitmap
Bitmap bitmap = _dicomImage.RenderImage().Clone().As<Bitmap>();
// 转化为BitmapImage
Image = BitmapUtil.BitmapToBitmapImage(bitmap);
bitmap.Dispose();
});
}
}
public DelegateCommand<MouseEventArgs> LeftPressedAndMouseMove
{
get
{
return new DelegateCommand<MouseEventArgs>(new Action<MouseEventArgs>((e) =>
{
var point = e.GetPosition(e.Device.Target);
var min = (2 * _dicomImage.WindowCenter - _dicomImage.WindowWidth) / 2.0 0.5;
var max = (2 * _dicomImage.WindowCenter _dicomImage.WindowWidth) / 2.0 0.5;
_dicomImage.WindowWidth = point.X / _pointX * _defaultWidth;
if (_dicomImage.WindowWidth < min)
{
_dicomImage.WindowWidth = min;
}
if (_dicomImage.WindowWidth > max)
{
_dicomImage.WindowWidth = max;
}
_dicomImage.WindowCenter = point.Y / _pointY * _defaultHeight;
if (_dicomImage.WindowCenter < min)
{
_dicomImage.WindowCenter = min;
}
if (_dicomImage.WindowCenter > max)
{
_dicomImage.WindowCenter = max;
}
// 将DICOM影像装换为bitmap
Bitmap bitmap = _dicomImage.RenderImage().As<Bitmap>();
// 转化为BitmapImage
Image = BitmapUtil.BitmapToBitmapImage(bitmap);
bitmap.Dispose();
}), new Func<MouseEventArgs, bool>((e) =>
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Cur = Cursors.SizeWE;
if (_pointX == 0 && _pointY == 0)
{
var point = e.GetPosition(e.Device.Target);
_pointX = point.X;
_pointY = point.Y;
}
return true;
}
return false;
}));
}
}
public DelegateCommand<MouseEventArgs> MouseLeftButtonUp
{
get
{
return new DelegateCommand<MouseEventArgs>((e) =>
{
// 设置默认DICOM影像窗宽窗位
_defaultWidth = _dicomImage.WindowWidth;
_defaultHeight = _dicomImage.WindowCenter;
_pointX = 0;
_pointY = 0;
Cur = Cursors.Arrow;
});
}
}
}
}
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