Returns the offset of the DICOM element pElement in the DICOM file.
#include "Ltdic.h"
L_LTDIC_API L_INT64 L_DicomGetElementOffset(hDS, pElement)
A DICOM handle.
Pointer to a DICOMELEMENT structure within the Data Set.
Value | Meaning |
---|---|
DICOM_SUCCESS | The offset of the element is unknown. |
>0 | The offset of the element in the DICOM file. |
You must load a DICOM file using the flag DS_LOAD_STORE_OFFSETS to use this function. Otherwise, L_DicomGetElementOffset will always return 0.
This method is used to return the offset (or physical location) in a DICOM file of any DICOM element.
Win32, x64, Linux.
This example loads a DICOM file, and finds the physical offset of the TAG_PATIENT_ID in the file.
L_VOID DicomGetElementOffsetExample()
{
HDICOMDS hDS = L_DicomCreateDS(NULL);
if (hDS == NULL)
return;
L_TCHAR *pszFile = MAKE_IMAGE_PATH(TEXT("image2.dcm"));
L_DicomLoadDS(hDS, pszFile, DS_LOAD_STORE_OFFSETS);
pDICOMELEMENT pElement = L_DicomFindFirstElement(hDS, NULL, TAG_PATIENT_ID, TRUE);
if (pElement == NULL)
return;
// uOffset will contain the file offset of the TAG_PATIENT_ID element
L_INT64 uOffset = L_DicomGetElementOffset(hDS, pElement);
L_TCHAR szMsg[200]={0};
wsprintf(szMsg, TEXT("The offset of the TAG_PATIENT_ID in file '%s' is: 0x%x"), pszFile, uOffset);
OutputDebugString(szMsg);
// Clean up
L_DicomFreeDS(hDS);
}
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