# How to detect the presence of corner annotation and clear it from vtkrender?

**URL:** <https://discourse.vtk.org/t/how-to-detect-the-presence-of-corner-annotation-and-clear-it-from-vtkrender/7998>\
**Category:** Development\
**Created:** [March 7, 2022, 8:13am UTC](https://discourse.vtk.org/t/how-to-detect-the-presence-of-corner-annotation-and-clear-it-from-vtkrender/7998 "2022-03-07T08:13:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Usha\_Diggi](https://discourse.vtk.org/user_avatar/discourse.vtk.org/usha_diggi/32/4489_2.png) [@Usha\_Diggi](https://discourse.vtk.org/u/Usha_Diggi)\
**Post date:** [March 7, 2022, 8:13am UTC](https://discourse.vtk.org/t/how-to-detect-the-presence-of-corner-annotation-and-clear-it-from-vtkrender/7998/1 "2022-03-07T08:13:13Z")

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I am reading the multiple DICOM data on same view port and parallelly displaying its meta data on its renderer using vtk corner annotation.  
while 2nd data loading, its info is overlaying on first one…I tried clearing corner annotation but no luck…any help must be appreciated