fix: update to use the header promise while acquiring the header for …

…making the image plane meta data consistent for each slice on every request
cornerstonejs · Jan 5, 2023 · 428e7ac · 428e7ac
1 parent ecd2c29
commit 428e7ac
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/src/nifti/VolumeAcquisitionStreamer.js b/src/nifti/VolumeAcquisitionStreamer.js
@@ -86,8 +86,10 @@ export default class VolumeAcquisitionStreamer {
   acquireHeaderOnly (imageIdObject, isRangeRead = true) {
     const fetcherData = this.getFetcherData(imageIdObject);
 
-    if (fetcherData.headerPromise) {
-      return fetcherData.headerPromise;
+    const headerPromise = fetcherData.headerPromise || fetcherData.headerOnlyPromise;
+
+    if (headerPromise) {
+      return headerPromise;
     }
 
     // if no one has requested the header of this volume yet, we create a

diff --git a/src/nifti/parseNiftiFile.js b/src/nifti/parseNiftiFile.js
@@ -127,7 +127,7 @@ function ensureUnitInMillimeters (nifti, header) {
 
 function getOrientationMatrix (header) {
   if (header.affine && header.sform_code > 0) {
-    return header.affine;
+    return header.affine.map((row) => row.slice());
   }
 
   if (header.qform_code > 0) {