From 8a767a798d42d281ddb9a0304f36db1e5894d0b5 Mon Sep 17 00:00:00 2001
From: Julien Lamy <lamy@unistra.fr>
Date: Mon, 11 Mar 2024 09:40:37 +0100
Subject: [PATCH] Fix repeated conversion of frame-specific elements

---
 src/python/dicomifier/dicom_to_nifti/meta_data.py | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/python/dicomifier/dicom_to_nifti/meta_data.py b/src/python/dicomifier/dicom_to_nifti/meta_data.py
index 4bb8581..5f3ca46 100644
--- a/src/python/dicomifier/dicom_to_nifti/meta_data.py
+++ b/src/python/dicomifier/dicom_to_nifti/meta_data.py
@@ -96,11 +96,13 @@ def get_meta_data(stack, cache=None):
         if frame is not None:
             # Fetch frame-specific elements
             groups = data_set[odil.registry.PerFrameFunctionalGroupsSequence][frame]
-            _fill_meta_data_dictionary(
-                groups, 
-                lambda tag, value: 
-                    elements.setdefault(tag, {}).update({i: value}), 
-                skipped, no_recurse)
+            if tag not in elements or isinstance(elements[tag], dict):
+                _fill_meta_data_dictionary(
+                    groups, 
+                    lambda tag, value: 
+                        elements.setdefault(tag, {}).update({i: value}), 
+                    skipped, no_recurse)
+            # Otherwise element has already been converted
     
     # Convert dictionary with possible holes to list: iteration is quicker.
     elements = {