I can think of two ways.<div><br></div><div>1) you can average the 6b0s and create one b0. Then the file size of the two datasets will be the same. </div><div>2) combine the two datasets into one file. You will get 6b0 + 60 direction + 1 b0 + 60 direction all in one file. Then your gradient table also needs to follow this order. You can combine them by loading all data into one DtiStudio window, select all 127 images for saving.<br>
<br><div class="gmail_quote">On Thu, Apr 5, 2012 at 7:35 PM, Bernd Wahlt <span dir="ltr"><<a href="mailto:bwahlt@gmail.com" target="_blank">bwahlt@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear DTI Experts,<br>
<br>
I have two datasets, both 60 directions, in one dataset only 1 b0 was<br>
collected and in the other i have 6 b0 images (same TE, TR etc.)<br>
Could you comment on whether these two datasets can be combined? I am<br>
worried about SNR issue but since both datasets have the<br>
same number of directions I believe the SNR would be the same but not<br>
sure about the effect of different number of b0 images<br>
collected, especially on FA.<br>
<br>
Thank you.<br>
<br>
Bernd<br>
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