diff --git a/atlas/models.py b/atlas/models.py
index ee26a74c..7637dcc3 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -423,7 +423,7 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
         examinations = [series.get_examination() for series in self.series.all()]
         return f"{self.pk}:{self.title} {'/'.join([str(c) for c in self.condition.all()])} [{', '.join(examinations)}]"
 
-    def get_case_dicom_json(self, case_title_as_patient_name=True):
+    def get_case_dicom_json(self, case_title_as_patient_name=True, priors=None):
         series_json = []
         for series in self.series.all():
             series_json.append(series.get_series_dicom_json())
@@ -432,7 +432,7 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
         if case_title_as_patient_name:
             patient_name = self.title
 
-        return {
+        studies_json = {
             "studies": [
                 {
                     "StudyInstanceUID": "1.3.6.1.4.1.14519.5.2.1.6279.6001.298806137288633453246975630178",
@@ -446,8 +446,26 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
                     "series": series_json,
                 }
             ]
+
         }
-        pass
+
+        if priors is not None:
+            for prior in priors:
+                studies_json["studies"].append(
+                {
+                    "StudyInstanceUID": "1.3.6.1.4.1.14519.5.2.1.6279.6001.298806137288633453246975630177",
+                    "StudyDate": "20000101",
+                    "StudyTime": "",
+                    "PatientName": patient_name,
+                    "PatientID": "LIDC-IDRI-0001",
+                    "AccessionNumber": "",
+                    "PatientAge": "",
+                    "PatientSex": "",
+                    "series": prior.prior_case.get_series_dicom_json(),
+                }
+            )
+
+        return studies_json
 
     def get_viva_details(self):
         return {
diff --git a/atlas/templates/atlas/collection_case_view_take.html b/atlas/templates/atlas/collection_case_view_take.html
index 5d2fe7c2..23a4c75a 100644
--- a/atlas/templates/atlas/collection_case_view_take.html
+++ b/atlas/templates/atlas/collection_case_view_take.html
@@ -46,14 +46,14 @@
 
     {% if collection.show_ohif_viewer %}
         <div>
-            <iframe id="viewer" style="width: 100%; height: 100%; border: none; padding: 0px;" src="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}"></iframe>
+            <iframe id="viewer" style="width: 100%; height: 100%; border: none; padding: 0px;" src="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:collection_case_dicom_json' collection.pk case.pk %}"></iframe>
         </div>
     {% endif %}
 
 
     {% if collection.show_ohif_viewer_link %}
         <div>
-            <a target="_blank" href="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}">View case in OHIF</a>
+            <a target="_blank" href="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:collection_case_dicom_json' collection.pk case.pk %}">View case in OHIF</a>
         </div>
     {% endif %}
 
diff --git a/atlas/urls.py b/atlas/urls.py
index 3acc6763..6cdb342f 100755
--- a/atlas/urls.py
+++ b/atlas/urls.py
@@ -121,6 +121,11 @@ urlpatterns = [
         views.collection_case_priors,
         name="collection_case_priors",
     ),
+    path(
+        "collection/<int:exam_id>/case/<int:case_id>/dicom_json",
+        views.collection_case_dicom_json,
+        name="collection_case_dicom_json",
+    ),
     path(
         "collection/<int:exam_id>/question_schemas",
         views.collection_question_schemas,
diff --git a/atlas/views.py b/atlas/views.py
index 49f28625..453fbd63 100755
--- a/atlas/views.py
+++ b/atlas/views.py
@@ -2326,6 +2326,13 @@ def use_dates_as_descriptions(request, pk):
 
     return HttpResponse("Done")
 
+def collection_case_dicom_json(request, exam_id, case_id):
+    case_detail = CaseDetail.objects.get(case=case_id, collection=exam_id)
+
+    priors = case_detail.caseprior_set.all()
+
+    return JsonResponse(case_detail.case.get_case_dicom_json(priors=priors))
+
 
 def case_dicom_json(request, pk):
     case = get_object_or_404(Case, pk=pk)