/// <summary>
/// Returns the existing stats for tag popularity, modality frequencies etc. If stats have not been loaded they are loaded
/// and primed with the Random <paramref name="r"/> (otherwise <paramref name="r"/> is ignored).
/// </summary>
/// <param name="r"></param>
/// <returns></returns>
public static DicomDataGeneratorStats GetInstance(Random r)
{
lock (InstanceLock)
{
return(_instance ?? (_instance = new DicomDataGeneratorStats(r)));
}
}
/// <summary>
/// Returns the existing stats for tag popularity, modality frequencies etc. If stats have not been loaded they are loaded
/// and primed with the Random <paramref name="r"/> (otherwise <paramref name="r"/> is ignored).
/// </summary>
/// <param name="r"></param>
/// <returns></returns>
public static DicomDataGeneratorStats GetInstance(Random r)
{
lock (InstanceLock)
{
if (_instance == null)
{
_instance = new DicomDataGeneratorStats(r);
}
return(_instance);
}
}
public Study(DicomDataGenerator parent, Person person, ModalityStats modalityStats, Random r)
{
/////////////////////// Generate all the Study Values ////////////////////
Parent = parent;
StudyUID = DicomUID.Generate();
StudyDate = person.GetRandomDateDuringLifetime(r).Date;
var stats = DicomDataGeneratorStats.GetInstance(r);
//if we know about the frequency of tag values for this modality?
if (stats.TagValuesByModalityAndTag.ContainsKey(modalityStats.Modality))
{
foreach (KeyValuePair <DicomTag, BucketList <string> > dict in stats.TagValuesByModalityAndTag[modalityStats.Modality])
{
//for each tag we know about
//if it's a study level one record it here
if (dict.Key == DicomTag.StudyDescription)
{
StudyDescription = dict.Value.GetRandom();
}
}
}
AccessionNumber = stats.GetRandomAccessionNumber(r);
StudyTime = stats.GetRandomTimeOfDay(r);
///////////////////// Generate all the Series (will also generate images) /////////////////////
//have a random number of series (based on average and standard deviation for that modality)
//but have at least 1 series!
int seriesCount = Math.Max(1, (int)modalityStats.SeriesPerStudyNormal.Sample());
Series = new ReadOnlyCollection <Series>(_series);
for (int i = 0; i < seriesCount; i++)
{
_series.Add(new Series(this, person, modalityStats, r));
}
}
/// <summary>
///
/// </summary>
/// <param name="r"></param>
/// <param name="outputDir"></param>
/// <param name="modalities">List of modalities to generate from e.g. CT,MR. The frequency of images generated is based on
/// the popularity of that modality in a clinical PACS. Passing nothing results in all supported modalities being generated</param>
public DicomDataGenerator(Random r, DirectoryInfo outputDir, params string[] modalities) : base(r)
{
OutputDir = outputDir;
var stats = DicomDataGeneratorStats.GetInstance(r);
if (modalities.Length == 0)
{
_modalities = stats.ModalityIndexes.Values.ToArray();
}
else
{
foreach (var m in modalities)
{
if (!stats.ModalityIndexes.ContainsKey(m))
{
throw new ArgumentException("Modality '" + m + "' was not supported, supported modalities are:" + string.Join(",", stats.ModalityIndexes.Select(kvp => kvp.Key)));
}
}
_modalities = modalities.Select(m => stats.ModalityIndexes[m]).ToArray();
}
}
private ModalityStats GetRandomModality()
{
return(DicomDataGeneratorStats.GetInstance(r).ModalityFrequency.GetRandom(_modalities));
}
