cleus (shown below) is visible in all three slices.</p></td>
   </tr>
 </table>
 <p align="center"><img src="Artwork/ttManualSegmentRightCaudate.gif" width="266" height="223"></p>
 <p align="left">Now we are ready to begin manual slice-by-slice segmentation.</p>
 <table width="80%"  border="1" align="center" cellpadding="4" cellspacing="0">
   <tr>
     <td width="36" valign="top"><img src="Artwork/ttIconAction.gif" width="36" height="36"></td>
     <td>Select the polygon tool in the IRIS toolbox (shown bel