How I Can Get A <W:Pict> Tag From Word Document Using Open Xml

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C#3.5

MS-Word

OpenXML

i have a document which contains some

<w:pict>

tags in table. how i can read/get it using openxml or XDocument i want to Remove and then Add updated

<w:pict>

tag in the document.

<w:tr w:rsidR="007F23F0" w:rsidTr="00773840">
    <w:tc>
      <w:tcPr>
        <w:tcW w:w="4395" w:type="dxa" />
      </w:tcPr>
      <w:p w:rsidR="007F23F0" w:rsidP="00855D6B" w:rsidRDefault="007F23F0">
        <w:r>
          <w:t>Approver Signature:</w:t>
        </w:r>
        <w:fldSimple w:instr=" DOCPROPERTY  A1_Sign  \* MERGEFORMAT ">
          <w:r w:rsidR="00773840">
            <w:t>A1_Sign</w:t>
          </w:r>
        </w:fldSimple>
        <w:r w:rsidR="00773840">
          <w:pict>
            <v:shape id="_x0000_i1026" style="width:127.5pt;height:47.25pt" filled="t" o:preferrelative="f" type="#_x0000_t75" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml">
              <v:imagedata r:id="rId7" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" />
              <o:lock v:ext="edit" aspectratio="f" />
            </v:shape>
          </w:pict>
        </w:r>
      </w:p>
      <w:p w:rsidR="007F23F0" w:rsidP="00855D6B" w:rsidRDefault="007F23F0" />
      <w:p w:rsidR="007F23F0" w:rsidP="00855D6B" w:rsidRDefault="007F23F0" />
    </w:tc>
  </w:tr>

Please help.