feat: Add support for study instance UID in series and enhance DICOM import functionality

atlas/migrations/0101_series_study_instance_uid.py

@@ -0,0 +1,65 @@
+# Generated by Django 5.2.7 on 2026-05-11 08:56
+
+from django.db import migrations, models
+import pydicom
+
+
+def backfill_series_study_instance_uid(apps, schema_editor):
+    Series = apps.get_model('atlas', 'Series')
+    SeriesImage = apps.get_model('atlas', 'SeriesImage')
+
+    series_qs = Series.objects.filter(study_instance_uid__isnull=True)
+
+    for series in series_qs.iterator():
+        image_obj = (
+            SeriesImage.objects.filter(series_id=series.pk, removed=False)
+            .exclude(image='')
+            .order_by('pk')
+            .first()
+        )
+        if image_obj is None:
+            image_obj = (
+                SeriesImage.objects.filter(series_id=series.pk)
+                .exclude(image='')
+                .order_by('pk')
+                .first()
+            )
+
+        if image_obj is None or not image_obj.image:
+            continue
+
+        try:
+            with image_obj.image.open('rb') as fp:
+                ds = pydicom.dcmread(fp, stop_before_pixels=True, force=True)
+            value = ds.get('StudyInstanceUID')
+            if value is None:
+                continue
+            if hasattr(value, 'value'):
+                value = value.value
+            study_uid = str(value).strip()
+            if not study_uid:
+                continue
+
+            Series.objects.filter(pk=series.pk).update(study_instance_uid=study_uid)
+        except Exception:
+            continue
+
+
+def noop_reverse(apps, schema_editor):
+    return
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('atlas', '0100_casecollection_show_results_sharing_information'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='series',
+            name='study_instance_uid',
+            field=models.CharField(blank=True, db_index=True, max_length=255, null=True),
+        ),
+        migrations.RunPython(backfill_series_study_instance_uid, noop_reverse),
+    ]