public bool IsPixelDataProcessable()
{
// The 'DICOM Viewer' can only process the pixel data, if:
// a) the IOD is a CT Slice (SOPClassName: 'Computed Tomography Image', SOPClassUID: '1.2.840.10008.5.1.4.1.1.2')
if (!this.SOPClassUID.Equals("1.2.840.10008.5.1.4.1.1.2"))
{
return(false);
}
// b) the Transfer Syntax of the IOD does not indicate a compression of the pixel data. Supported Transfer Syntaxes are:
// - Explicit VR Encoding, little endian: '1.2.840.10008.1.2.1'
// - Implicit VR Encoding, little endian: '1.2.840.10008.1.2'
// - Explicit VR Encoding, big endian: '1.2.840.10008.1.2.2'
//
// Compressed pixel data is not supported by the 'DICOM Viewer'
//
if (!(this.TransferSyntaxUID.Equals("1.2.840.10008.1.2.1") || this.TransferSyntaxUID.Equals("1.2.840.10008.1.2") || this.TransferSyntaxUID.Equals("1.2.840.10008.1.2.2")))
{
return(false);
}
// c) the IOD must contain pixel data (DICOM attribute (7FE0,0010) has to be present)
if (!DICOMParserUtility.DoesDICOMAttributeExist(this.XDocument, "(7FE0,0010)"))
{
return(false);
}
// All above criterias are fullfilled, return true
return(true);
}
public IOD(string theFileName)
{
DICOMParser aDICOMParser = new DICOMParser(theFileName);
this.XDocument = aDICOMParser.GetXDocument();
this.FileName = theFileName;
this.StudyInstanceUID = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, "(0020,000D)");
this.SeriesInstanceUID = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, "(0020,000E)");
this.SOPInstanceUID = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, "(0008,0018)");
this.SOPClassUID = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, "(0008,0016)");
this.SOPClassName = SOPClassDictionary.GetSOPClassName(this.SOPClassUID);
this.PatientName = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, DICOMTAG.PATIENT_NAME);
this.TransferSyntaxUID = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, "(0002,0010)");
// The SortOrder attribute is used for sorting the CT Slices within one series.
// For all other IOD's, the SortOrder attribute has no meaning.
// For sorting the CT Slices, the Z-Value is used.
// The Z-Value is tried to be determined either from
// - 'Image Position Patient' attribute (0020,0032) or from
// - 'Slice Location' attribute (0020,1041)
if (DICOMParserUtility.DoesDICOMAttributeExist(this.XDocument, DICOMTAG.IMAGE_POSITION_PATIENT))
{
// 'Image Position Patient' attribute will be encoded as "x\y\z"
string aImagePositionPatient = DICOMParserUtility.GetDICOMAttributeAsString(this.XDocument, DICOMTAG.IMAGE_POSITION_PATIENT);
string[] split = aImagePositionPatient.Split(new Char[] { '\\' });
this.SortOrder = Convert.ToDouble(split[2], CultureInfo.InvariantCulture);
}
else
{
if (DICOMParserUtility.DoesDICOMAttributeExist(this.XDocument, DICOMTAG.SLICE_LOCATION))
{
this.SortOrder = DICOMParserUtility.GetDICOMAttributeAsDouble(this.XDocument, DICOMTAG.SLICE_LOCATION);
}
}
}
