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<DIV><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Dear Susumu,</SPAN></DIV>
<P><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"></SPAN> </P>
<P><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Thanks for your comments. another question. How to use DTIstudio deal with 3T seimens DTI data, they are saved in volumes by volumes, not slice by sclice</SPAN></P>
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<DIV>Best,</DIV>
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<DIV>Jinsong<BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">发件人：</SPAN></B> susumu <susumu@mri.jhu.edu><BR><B><SPAN style="FONT-WEIGHT: bold">收件人：</SPAN></B> "DTI Studio, ROI Editor, Landmarker Questions/Support" <mristudio-users@mristudio.org><BR><B><SPAN style="FONT-WEIGHT: bold">已发送：</SPAN></B> 2009/4/17(周五), 下午3:41:48<BR><B><SPAN style="FONT-WEIGHT: bold">主题：</SPAN></B> Re: [Mristudio-users] re： MriView3D application close<BR></FONT><BR>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Hi Jinsong,</SPAN></FONT></P>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">1) I usually use 2.5 x 2.5 x 2.5 mm for 1.5 T. About 60 DWI (with 12-orientation, 5 repeated NEX=1 (preferable) or NEX=5) should give decent SNR, which should take about 7-8 min. With 3T, 30 DWI should look good (3.5-4 min). </SPAN></FONT></P>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">For this protocol, 240x240 mm / 96x96 will do.</SPAN></FONT></P>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">2) We also use 2.2 x 2.2 x 2.2 mm for 3T with 60 DWI (8 min).</SPAN></FONT></P>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">3) Your protocol is 240/128 = 1.9 x 1.9. With 3 mm slice, this is about the same as 2.2x2.2x2.2. So, I think 12-orientation x 5 (60DWI) should provide decent SNR. However, because you are using longer echo trains, you have longer echo time (= SNR loss), more distortion, and more blurring (less true resolution due to T2* decay during the long echo). I prefer 96x96 with that reason.</SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">4) I prefer NEX = 1 x 5 repetition rather than NEX = 5, but I believe recent Siemens scanners have an option for “no average” even if you use NEX = 5 (all 5 NEX data are saved separately).</SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">5) I use shortest TR and your TR seems right.</SPAN></FONT></P>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Susumu </SPAN></FONT></P>
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<P class=MsoNormal><B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> mristudio-users-bounces@mristudio.org [mailto:mristudio-users-bounces@mristudio.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>jinsong tang<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, April 15, 2009 12:06 AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> DTI Studio, ROI Editor, Landmarker Questions/Support<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Mristudio-users] re</SPAN></FONT><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt" lang=JA>：</SPAN></FONT><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> MriView3D application close</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Dear Susumu,</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><BR>This is my protocol of DTI and 3D scaning at SIEMENS 3T, Would you please review it and give me some suggestions.</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Thanks,</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Jinsong</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P></DIV>
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<P class=MsoNormal><B><FONT size=6 face="Times New Roman"><SPAN style="FONT-SIZE: 22pt; FONT-WEIGHT: bold">DTI:</SPAN></FONT></B></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Axial</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">FOV= 240</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>×</SPAN></FONT>240mm</P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Slice thickness= 3mm</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Slice number=45</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Gap=0mm</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Matrix=128</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>×</SPAN></FONT>128</P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="BACKGROUND: lime; FONT-SIZE: 12pt">NEX=5 or 1</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="BACKGROUND: lime; FONT-SIZE: 12pt">TR=6046ms </SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun; BACKGROUND: lime" lang=JA>？</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">TE=93 </SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Diffusion directiuon =12</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">b=1000, b0=0.</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P></DIV>
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<P class=MsoNormal><B><FONT size=5 face="Times New Roman"><SPAN style="FONT-SIZE: 18pt; FONT-WEIGHT: bold">3D </SPAN></FONT></B></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">TR= 2000ms</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">TE=2.6ms</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">FOV=240</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>×</SPAN></FONT>240mm</P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Slice thickness=1mm</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Gap=0mm</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Slices=176</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Matrix=256</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>×</SPAN></FONT>256</P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Slice orientation= sagittal </SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Flip angle=15º</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">NEX=1</SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
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<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><B><FONT size=2 face=SimSun><SPAN style="FONT-FAMILY: SimSun; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>发</SPAN></FONT></B><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>件人：</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> susumu <susumu@mri.jhu.edu><BR></SPAN></FONT><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>收件人：</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt" lang=JA> </SPAN></FONT><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt">"DTI Studio, ROI Editor, Landmarker Questions/Support" <mristudio-users@mristudio.org><BR></SPAN></FONT><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt;
FONT-WEIGHT: bold" lang=JA>已</SPAN></FONT></B><B><FONT size=2 face=SimSun><SPAN style="FONT-FAMILY: SimSun; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>发</SPAN></FONT></B><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>送：</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> 2009/4/9(</SPAN></FONT><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt" lang=JA>周四</SPAN></FONT><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt">), </SPAN></FONT><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt" lang=JA>下午</SPAN></FONT><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt">11:04:09<BR></SPAN></FONT><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt; FONT-WEIGHT: bold"
lang=JA>主</SPAN></FONT></B><B><FONT size=2 face=SimSun><SPAN style="FONT-FAMILY: SimSun; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>题</SPAN></FONT></B><B><FONT size=2 face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'; FONT-SIZE: 10pt; FONT-WEIGHT: bold" lang=JA>：</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> Re: [Mristudio-users] MriView3D application close</SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">Hi Hugh,</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">When you got this error, please suspect one of the following two reasons;</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">1) Memory shortage:</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">Even if you have many GB of memories, 32-bit Windows system can allocate only 1 - 1.5 GB to each program. To check if you have the memory problem, please restrict the slices to be calculated. In the initial data parameter window, there is a section called "Slices to be processed". Here you can specify only a portion of slices to be processed. Please limit the slices to, for example, 0-9 and see how it goes. If you can calculate tensors without errors, then you have the memory problem. The solution is; a) upgrade to the 64-bit system or b) devide the calculation to 2 batches (e.g. slice 0-29 for the first batch and 30-59 for the second batch), calculate all maps (e.g. FA), and later combine them.</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">2) Mismatch between the gradient table and the number of images:</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">For example, if you specify 12-orientation table and 30 volume images, then you get the error. After loading the data and before you go to the Dti Map tab, make sure that you have 1 b0 + 64 DWIs in the pull-down menu in the right column of the Image tab. If you have the correct number of the images, then you might have an error in your gradient table. Small mistakes such as missing "," are often difficult to detect. The best way is; a) load the data using DtiMapping under the "File" button on the top left, b) close the window, c) open the image paremater window again by clicking "DtiMapping" in the "File" button again, d) the window still remembers the gradient table you entered last time. This remembered window tells how DtiStudio interpreted your gradient table. If there is any syntax errors, you may find them much easier. For example,
if you enter, "4: 1 0.5 0", instead of "4: 1, 0.5, 0", then you would find, "4: 1, 0, 0".</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">If any of these do not solve the issue, please let us know.</SPAN></FONT></P>
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<P class=MsoNormal><FONT color=blue size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: blue; FONT-SIZE: 10pt">Susumu</SPAN></FONT></P>
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<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> mristudio-users-bounces@mristudio.org [mailto:mristudio-users-bounces@mristudio.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Hugh Wang<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, April 08, 2009 6:30 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> mristudio-users@mristudio.org<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Mristudio-users] MriView3D application close</SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Hi, <BR><BR>I was using the dtistudio (ver. 2.4) to look at the Siemens DICOM diffusion images (1baseline,64 gradients). After successfully loading the images, I click the "dti map" option at lower right corner. Whatever calculation I choose, it always gives me an error: <BR><BR>"MriView3D MFC Application has encountered a problem and needs to close. We are sorry for the inconvenience."<BR><BR>I tried several PCs, and the problem keeped the same. I would appreciate that if there's anyone having any idea on how to solve it. Thanks.<BR><BR clear=all>Best,<BR>Hugh</SPAN></FONT></P></DIV></DIV></DIV>
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<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><A href="http://cn.rd.yahoo.com/mail_cn/tagline/card/*http:/card.mail.cn.yahoo.com/" rel=nofollow target=_blank><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>好玩</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>贺</SPAN></FONT><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>卡等你</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>发</SPAN></FONT><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>，</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>邮</SPAN></FONT><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>箱</SPAN></FONT><FONT face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>贺</SPAN></FONT><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>卡全新上</SPAN></FONT><FONT
face=SimSun><SPAN style="FONT-FAMILY: SimSun" lang=JA>线</SPAN></FONT><FONT face="MS Mincho"><SPAN style="FONT-FAMILY: 'MS Mincho'" lang=JA>！</SPAN></FONT></A></SPAN></FONT></P></DIV></DIV></DIV></div><br>
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