diff --git a/extensions/default/src/getPTImageIdInstanceMetadata.ts b/extensions/default/src/getPTImageIdInstanceMetadata.ts
index 0c9acc619..183a92beb 100644
--- a/extensions/default/src/getPTImageIdInstanceMetadata.ts
+++ b/extensions/default/src/getPTImageIdInstanceMetadata.ts
@@ -19,7 +19,6 @@ export default function getPTImageIdInstanceMetadata(
   if (
     dicomMetaData.SeriesDate === undefined ||
     dicomMetaData.SeriesTime === undefined ||
-    dicomMetaData.PatientWeight === undefined ||
     dicomMetaData.CorrectedImage === undefined ||
     dicomMetaData.Units === undefined ||
     !dicomMetaData.RadiopharmaceuticalInformationSequence ||
@@ -38,6 +37,10 @@ export default function getPTImageIdInstanceMetadata(
     throw new Error('required metadata are missing');
   }
 
+  if (dicomMetaData.PatientWeight === undefined) {
+    console.warn('PatientWeight missing from PT instance metadata');
+  }
+
   const instanceMetadata: InstanceMetadata = {
     CorrectedImage: dicomMetaData.CorrectedImage,
     Units: dicomMetaData.Units,