From 64ad38ce964357ecfdbbac08479bd435d940b12e Mon Sep 17 00:00:00 2001
From: Bruno Alves de Faria <brunoalvesdefaria@gmail.com>
Date: Tue, 26 Sep 2017 09:40:58 -0300
Subject: [PATCH] Adding prior timepoint to the viewer data

---
 Packages/ohif-viewerbase/client/lib/prepareViewerData.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Packages/ohif-viewerbase/client/lib/prepareViewerData.js b/Packages/ohif-viewerbase/client/lib/prepareViewerData.js
index fcffd2efc..7252ebf3a 100644
--- a/Packages/ohif-viewerbase/client/lib/prepareViewerData.js
+++ b/Packages/ohif-viewerbase/client/lib/prepareViewerData.js
@@ -109,6 +109,14 @@ const getDataFromTimepoint = timepoint => {
         OHIF.log.warn('No Baseline found while opening a Follow-up Timepoint');
     }
 
+    const priorFilter = { latestDate: { $lt: timepoint.latestDate } };
+    const priorSorting = { sort: { latestDate: -1 } };
+    const prior = OHIF.studylist.timepointApi.timepoints.findOne(priorFilter, priorSorting);
+    if (prior && prior.timepointId !== baseline.timepointId) {
+        relatedStudies = relatedStudies.concat(prior.studyInstanceUids);
+        timepointIds.push(prior.timepointId);
+    }
+
     timepointIds.push(timepoint.timepointId);
 
     return {