From c333cbd99ed2f1ad03010d972f58a09453a1e57e Mon Sep 17 00:00:00 2001
From: Jorge <jlopes@ai4medimaging.com>
Date: Sat, 8 Jun 2024 00:53:11 +0100
Subject: [PATCH] fix only one frame

---
 src/normalizers.js | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/normalizers.js b/src/normalizers.js
index 912df5f5..f1f971d2 100644
--- a/src/normalizers.js
+++ b/src/normalizers.js
@@ -230,8 +230,15 @@ class ImageNormalizer extends Normalizer {
                 "Cannot populate shared groups uniquely without multiple frames"
             );
         }
+
         let [distance0, dataset0] = distanceDatasetPairs[0];
-        let distance1 = distanceDatasetPairs[1][0];
+
+        // If the frame is one, it is zero
+        let distance1 = 0;
+
+        if (ds.NumberOfFrames > 1) {
+            distance1 = distanceDatasetPairs[1][0];
+        }
 
         //
         // make the functional groups
@@ -347,10 +354,6 @@ class ImageNormalizer extends Normalizer {
         };
         let frameNumber = 1;
         this.datasets.forEach(dataset => {
-            if (ds.NumberOfFrames === 1)
-                ds.PerFrameFunctionalGroupsSequence = [
-                    ds.PerFrameFunctionalGroupsSequence
-                ];
             ds.PerFrameFunctionalGroupsSequence[
                 frameNumber - 1
             ].FrameContentSequence = {