https://www.na-mic.org/w/index.php?action=history&feed=atom&title=Mbirn%3A_DTI_distortion_correction_%28post 2026-04-18T07:58:52Z Revision history for this page on the wiki MediaWiki 1.33.0 https://www.na-mic.org/w/index.php?title=Mbirn:_DTI_distortion_correction_(post&diff=3705&oldid=prev 2006-12-18T13:27:54Z

<p>Update from Wiki</p> <p><b>New page</b></p><div>'''GOALS'''<br /> <br /> * '''May - October 2005''' (S. Mori)<br /> ** We'll publish this tool. Manuscript should be ready by October / 2005.<br /> <br /> &lt;br /&gt;<br /> <br /> ----<br /> <br /> ----<br /> <br /> &lt;br /&gt;'''UPDATES'''<br /> <br /> * '''Progress for October 2004 - May 2005''' (S. Mori)<br /> ** Allen and Anders are working on EPI-B0 distortion correction based on phase measurements.<br /> ** Our goal is to develop a tool that can be applied to existing data which don't have phase map and can't be corrected by the phase-map approach. Also, the phase-map approach for parallel imaging is not yet available, I think. Thus, our goal is to develop a tool for:<br /> *** Measurement of distortion, which can be used to label badly distorted areas for subsequent data analysis, especially for morphological studies.<br /> *** Correction of distortion<br /> ** This tool assumes data are acquired by parallel imaging, in which distortion is not severe in most regions.<br /> *** This approach should be able to correct low-frequency distortion fairly well (Fig. 1).<br /> *** High frequency distortion could be difficult to correct but it can at least label such areas (Fig. 2).<br /> *** This is time-consuming approach (1-2 hours / data).<br /> ** We finished our initial studies and calculated average distortion maps (Fig. 1 and 2).<br /> ** We are currently working on user-front interface to make this tool available.<br /> <br /> [[Image:Mbirn_Mori_summaryMay2005.jpg|[[Image:Mbirn_Mori_summaryMay2005.jpg| Figures 5 and 6]]]]<br /> <br /> ----</div>

Andy