diff --git a/src/src/IO/DICOM/DICOMHeaderHelper.cpp b/src/src/IO/DICOM/DICOMHeaderHelper.cpp
index 8c2dcac..ccc2582 100644
--- a/src/src/IO/DICOM/DICOMHeaderHelper.cpp
+++ b/src/src/IO/DICOM/DICOMHeaderHelper.cpp
@@ -138,16 +138,16 @@ void DICOMHeaderHelper::readHeaderFromFile(const char * filePath){
         }
 
         //try to read Orientation and Position
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[0], 0);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[1], 1);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[2], 2);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[3], 3);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[4], 4);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0037), fileHeader.Orientation[5], 5);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[0], 0);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[1], 1);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[2], 2);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[3], 3);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[4], 4);
+        dataset->findAndGetFloat64(DCM_ImageOrientationPatient, fileHeader.Orientation[5], 5);
 
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0032), fileHeader.Position[0], 0);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0032), fileHeader.Position[1], 1);
-        dataset->findAndGetFloat64(DcmTagKey(0x0020, 0x0032), fileHeader.Position[2], 2);
+        dataset->findAndGetFloat64(DCM_ImagePositionPatient, fileHeader.Position[0], 0);
+        dataset->findAndGetFloat64(DCM_ImagePositionPatient, fileHeader.Position[1], 1);
+        dataset->findAndGetFloat64(DCM_ImagePositionPatient, fileHeader.Position[2], 2);
         fileHeader.calculateImagePosition();
 
         //multi-frame data