GetVtkInfoTextImage()->PutWindowLevel();
GetVtkInfoTextImage()->PutColorLevel();
GetVtkInfoTextImage()->PutPosition( (int)xx , (int)yy , (int)zz );
GetVtkInfoTextImage()->PutWindowLevel();
GetVtkInfoTextImage()->PutColorLevel();
GetVtkInfoTextImage()->PutPosition( (int)xx , (int)yy , (int)zz );