DicomElement Class

Summary

The DicomElement class holds information concerning the Data Elements contained in a DICOM data set.

Syntax

Objective-C

C++/CLI

Java

public class DicomElement

@interface LTDicomElement : NSObject

public class DicomElement

public ref class DicomElement

Remarks

When a data set is loaded from a DICOM file, only the tag, the value representation and the length of the stored value data is actually loaded. This information is stored in the DicomElement class.

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void DicomSetGetValueTest() 
{ 
   //Make sure to initialize the DICOM engine, this needs to be done only once  
   //In the whole application 
   DicomEngine.Startup(); 
   using (DicomDataSet dicomDataset = new DicomDataSet()) 
   { 
      dicomDataset.Reset(); 
      dicomDataset.Initialize(DicomClassType.Undefined, DicomDataSetInitializeType.ExplicitVRLittleEndian); 
      DicomElement element = dicomDataset.InsertElement(null, false, DicomTag.CineRate, DicomVRType.IS, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetIntValue(element, new int[] { 30 }, 1); 
         int[] value = dicomDataset.GetIntValue(element, 0, 1);// can also call GetLongValue 
         Debug.Assert(value[0] == 30); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.ChannelMaximumValue, DicomVRType.OB, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetByteValue(element, new byte[] { 55 }, 1); 
         byte[] value = dicomDataset.GetByteValue(element, 0, 1); 
         Debug.Assert(value[0] == 55); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.PregnancyStatus, DicomVRType.US, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetShortValue(element, new short[] { 2 }, 1); 
         short[] value = dicomDataset.GetShortValue(element, 0, 1); 
         Debug.Assert(value[0] == 2); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.SliceLocation, DicomVRType.DS, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetDoubleValue(element, new double[] { 10.5 }, 1); 
         double[] value = dicomDataset.GetDoubleValue(element, 0, 1); 
         Debug.Assert(value[0] == 10.5); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.PresentationPixelMagnificationRatio, DicomVRType.FL, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetFloatValue(element, new float[] { 3.2F }, 1); 
         float[] value = dicomDataset.GetFloatValue(element, 0, 1); 
         Debug.Assert(value[0] == 3.2F); 
 
         // Or you can use this overload 
         dicomDataset.SetFloatValue(element, 4.0F); 
         value = dicomDataset.GetFloatValue(element, 0, 1); 
         Debug.Assert(value[0] == 4.0F); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.InstanceCreationDate, DicomVRType.DA, false, 0); 
      if (element != null) 
      { 
         DicomDateValue[] newvalue = new DicomDateValue[1]; 
         newvalue[0].Year = 2004; 
         newvalue[0].Month = 1; 
         newvalue[0].Day = 8; 
         dicomDataset.SetDateValue(element, newvalue); 
         DicomDateValue[] value = dicomDataset.GetDateValue(element, 0, 1); 
         Debug.Assert((value[0].Year == 2004) && (value[0].Month == 1) && (value[0].Day == 8)); 
 
         // Or you can use the SetDateValue overload that takes a single DicomDateValue 
         dicomDataset.SetDateValue(element, new DicomDateValue(1961, 6, 5)); 
         value = dicomDataset.GetDateValue(element, 0, 1); 
         Debug.Assert((value[0].Year == 1961) && (value[0].Month == 6) && (value[0].Day == 5)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.InstanceCreationTime, DicomVRType.TM, false, 0); 
      if (element != null) 
      { 
         DicomTimeValue[] newvalue = new DicomTimeValue[1]; 
         newvalue[0].Hours = 2; 
         newvalue[0].Minutes = 3; 
         newvalue[0].Seconds = 5; 
         dicomDataset.SetTimeValue(element, newvalue); 
         DicomTimeValue[] value = dicomDataset.GetTimeValue(element, 0, 1); 
         Debug.Assert((value[0].Hours == 2) && (value[0].Minutes == 3) && (value[0].Seconds == 5)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.AcquisitionDateTime, DicomVRType.DT, false, 0); 
      if (element != null) 
      { 
         DicomDateTimeValue[] newvalue = new DicomDateTimeValue[1]; 
         newvalue[0].Year = 2004; 
         newvalue[0].Month = 1; 
         newvalue[0].Day = 8; 
         newvalue[0].Hours = 2; 
         newvalue[0].Minutes = 3; 
         newvalue[0].Seconds = 5; 
         dicomDataset.SetDateTimeValue(element, newvalue); 
         DicomDateTimeValue[] value = dicomDataset.GetDateTimeValue(element, 0, 1); 
         Debug.Assert((value[0].Hours == 2) && (value[0].Minutes == 3) && (value[0].Seconds == 5)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.PatientAge, DicomVRType.AS, false, 0); 
      if (element != null) 
      { 
         DicomAgeValue[] newvalue = new DicomAgeValue[1]; 
         newvalue[0].Number = 25; 
         newvalue[0].Reference = DicomAgeReferenceType.Days; 
         dicomDataset.SetAgeValue(element, newvalue); 
         DicomAgeValue[] value = dicomDataset.GetAgeValue(element, 0, 1); 
         Debug.Assert((value[0].Number == 25)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.PatientName, DicomVRType.PN, false, 0); 
      if (element != null) 
      { 
         dicomDataset.FreeElementValue(element); 
         dicomDataset.SetStringValue(element, "John Doe", DicomCharacterSetType.Default); 
         Debug.Assert(dicomDataset.GetElementValueCount(element) == 1); 
         Debug.Assert(dicomDataset.GetStringValue(element, 0) == "John Doe"); 
      } 
 
      byte[] inPreamble = new byte[128]; 
      for (int i = 0; i < 128; i++) 
      { 
         inPreamble[i] = (byte)i; 
      } 
      dicomDataset.SetPreamble(inPreamble, 0, 128); 
      byte[] outPreamble = dicomDataset.GetPreamble(128); 
 
      // Or you can use this overload which takes an offset 
      dicomDataset.GetPreamble(out outPreamble, 0, 128); 
 
      Debug.Assert(inPreamble.Length == outPreamble.Length); 
 
      element = dicomDataset.FindFirstElement(element, DicomTag.NumberOfRemainingSubOperations, true); 
      if (element != null) 
      { 
         //We don't really need to do this 
         dicomDataset.FreeElementValue(element); 
         byte[] inBinaryValue = new byte[2]; 
         inBinaryValue[0] = 0; 
         inBinaryValue[1] = 1; 
         dicomDataset.SetBinaryValue(element, inBinaryValue, 2); 
         byte[] outBinaryValue = dicomDataset.GetBinaryValue(element, 2); 
         Debug.Assert((outBinaryValue[0] == 0) && (outBinaryValue[1] == 1)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.StudyDate, DicomVRType.DA, false, 0); 
      if (element != null) 
      { 
         DicomDateValue date1 = new DicomDateValue(); 
         date1.Day = 1; 
         date1.Month = 2; 
         date1.Year = 2005; 
         DicomDateRangeValue[] newvalue = new DicomDateRangeValue[1]; 
         newvalue[0].Date1 = date1; 
         newvalue[0].Type = DicomRangeType.Lower; 
         dicomDataset.SetDateRangeValue(element, newvalue); 
         DicomDateRangeValue value = dicomDataset.GetDateRangeValue(element, 0); 
         Debug.Assert((value.Type == DicomRangeType.Lower) && (value.Date1.Year == 2005)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.StudyTime, DicomVRType.TM, false, 0); 
      if (element != null) 
      { 
         DicomTimeValue time1 = new DicomTimeValue(); 
         time1.Hours = 2; 
         time1.Minutes = 1; 
         time1.Seconds = 3; 
         DicomTimeRangeValue[] newvalue = new DicomTimeRangeValue[1]; 
         newvalue[0].Time1 = time1; 
         newvalue[0].Type = DicomRangeType.Lower; 
         dicomDataset.SetTimeRangeValue(element, newvalue); 
         DicomTimeRangeValue value = dicomDataset.GetTimeRangeValue(element, 0); 
         Debug.Assert((value.Type == DicomRangeType.Lower) && (value.Time1.Hours == 2)); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.PatientID, DicomVRType.LO, false, 0); 
      if (element != null) 
      { 
         dicomDataset.SetConvertValue(element, "154-4485", 1); 
         Debug.Assert(dicomDataset.GetConvertValue(element) == "154-4485"); 
      } 
 
      element = dicomDataset.InsertElement(null, false, DicomTag.SelectorULValue, DicomVRType.UL, false, 0); 
      if (element != null) 
      { 
         // Set two unsigned integer values (minimum and maximum unsigned 32-bit values) 
         long[] values = new long[] { 0, 4294967295 }; 
         dicomDataset.SetLongValue(element, values, 2); 
 
         string s = dicomDataset.GetConvertValue(element); 
         Debug.Assert(dicomDataset.GetConvertValue(element) == "0\\4294967295"); 
      } 
 
      dicomDataset.Save(Path.Combine(LEAD_VARS.ImagesDir, "Test.dcm"), DicomDataSetSaveFlags.None); 
   } 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

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Help Version 23.0.2024.8.20

Leadtools.Dicom Assembly

Introduction

Getting Started

Namespaces

Leadtools.Dicom Namespace

Assemblies