/// <summary>
/// Applies user DICOM tag replacement rules to a dataset
/// </summary>
/// <param name="dicomDataSet">The dicom dataset.</param>
/// <param name="replacement">The replacement.</param>
public static void ApplyUserReplacement(DicomDataset dicomDataSet, TagReplacement replacement)
{
dicomDataSet = dicomDataSet ?? throw new ArgumentNullException(nameof(dicomDataSet));
replacement = replacement ?? throw new ArgumentNullException(nameof(replacement));
// We must do contains otherwise if the tag is present but empty it will return null
var tag = replacement.DicomTagIndex.DicomTag;
if (dicomDataSet.Contains(tag))
{
var sourceTagValue = dicomDataSet.GetSingleValueOrDefault(tag, string.Empty);
if (replacement.Operation == TagReplacementOperation.UpdateIfExists)
{
dicomDataSet.AddOrUpdate(tag, replacement.Value);
}
else if (replacement.Operation == TagReplacementOperation.AppendIfExists)
{
dicomDataSet.AddOrUpdate(tag, $"{sourceTagValue}{replacement.Value}");
}
else
{
throw new InvalidOperationException(nameof(replacement));
}
}
}
/// <summary>
/// Replaces the user tag.
/// </summary>
/// <param name="dicomDatasetDeAnonymized">The dicom dataset de anonymized.</param>
/// <param name="tagReplacement">The tag replacement.</param>
public static void ReplaceUserTag(
DicomDataset dicomDatasetDeAnonymized,
TagReplacement tagReplacement)
{
ApplyUserReplacement(dicomDatasetDeAnonymized, tagReplacement);
// Handle sequences recursive
foreach (var item in dicomDatasetDeAnonymized)
{
if (item is DicomSequence dicomSequence)
{
foreach (var dataset in dicomSequence.Items)
{
ReplaceUserTag(dataset, tagReplacement);
}
}
}
}
