From 5935c027b1439d2878a2a8e866a89e069b6ef6f6 Mon Sep 17 00:00:00 2001
From: Evren Ozkan <evren217@gmail.com>
Date: Fri, 10 Jun 2016 17:37:07 -0400
Subject: [PATCH] Check study instances whether they have image data based on
 sopClassUid or rows (JPEG and PNG images do not have sopClassUid) in
 layoutManager as well

---
 Packages/viewerbase/lib/layoutManager.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Packages/viewerbase/lib/layoutManager.js b/Packages/viewerbase/lib/layoutManager.js
index d056deb6c..85fb2da00 100644
--- a/Packages/viewerbase/lib/layoutManager.js
+++ b/Packages/viewerbase/lib/layoutManager.js
@@ -51,7 +51,9 @@ LayoutManager = class LayoutManager {
                     // TODO: Change this when we add PDF and MPEG support
                     // See https://ohiforg.atlassian.net/browse/LT-227
                     var firstInstance = series.instances[0];
-                    if (!firstInstance.rows) {
+
+                    // All imaging modalities must have a valid value for sopClassUid or rows
+                    if (!firstInstance || (!isImage(firstInstance.sopClassUid) && !firstInstance.rows)) {
                         currentViewportData = {};
                     } else {
                         currentViewportData = {