<DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><FONT face="Times New Roman">Dear Specialists, </FONT></FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3></FONT></SPAN> </DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3>I meet a problem to ask your help. I try to use the level set method to segment blood vessels from MRA images. Now I have obtained main arteries as initial surface. For quicken the curve evolution‎, I want to employ narrow band method to evolve the surface. I want to know:</FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3>1. What function(filter) is able to construct a narrow band around surface to be evolved.</FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New
Roman" size=3>2. What is the stopping criterion for evolution? </FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3></FONT></SPAN> </DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US>Though I know of itkNarrowBandLevelSetImageFilter, itkNarroBandCurvesLevelSetImageFilter, </SPAN><SPAN lang=EN-US>itkNarrowBandThresholdSegmentationLevelSetImageFilter, I don¡¯t know how to use these function. </SPAN></FONT></FONT></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><FONT face="Times New Roman">Moreover, would you like to tell me how to learn to use one function by explanation in Doxygen, because there aren¡¯t application examples about most functions in ITK Software Guide. </FONT></FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman"
size=3></FONT></SPAN> </DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><FONT face="Times New Roman">Thank you for your help!</FONT></FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3></FONT></SPAN> </DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><FONT face="Times New Roman">Best wishes,</FONT></FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3></FONT></SPAN> </DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman" size=3>Sin</FONT></SPAN><SPAN lang=EN-US></SPAN></DIV><p> 
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