[Mristudio-users] how to create .flg file

[susumu mori]

Hi SC,

I don't have much experience with 7T yet.
For 1.5T and 3T, I use 2.5mm isotropic resolution for 1.5T and 2.2mm for 3T.
I think 2.0mm is possible with 3T, but I prefer to have higher SNR (2.2mm)
than higher resolution (2.0mm)

For both Ts, I use the same 96x96 matrix (zerofilled to 192x192 (Siemens) or
256x256 (Philips)) so the FOV is 240 (2.5mm) or 212 (2.2mm).

For 1.5T, I use at least 60 DWIs (about 8-9 min), preferably 90 DWIs (more
than 10 min less than 15 min) and for 3T 24 - 60 DWIs (4.5-9 min).

This means, for Siemens, 12-orientation x multiple scans and for Philips
32-orientation x multiple scans.

I prefer b-value = 700, but 1,000 is also fine.

Parallel imaging is "must".

TE/TR is shortest, although for Philips, I add 5-10 ms to the shortest TE
due to Eddy current and gradient load issue.



On Tue, Aug 2, 2011 at 8:34 AM, [Seongjin] <choisj70 at gmail.com> wrote:

> Dear Susumu,
>
> I wonder do you have any reference parameter sets for different filed
> strenghts, e,g, 1.5 T, 3T, or 7T?
>
> All of the best,
> -SC
>
>
> On Tue, Aug 2, 2011 at 8:02 AM, susumu mori <susumu at mri.jhu.edu> wrote:
>
>> Hi Lydia,
>>
>> you first have to specify the filename in the opening data input window.
>> Then at the end of the session, DtiStudio asks where to save the info.
>>
>> We recently start using pixel-rejection instead of manual slice-by-slice
>> quality check. Please see
>> https://www.mristudio.org/wiki/changelog/dtistudio-3.0.2 for detail.
>>
>> Susumu
>>
>>
>> On Tue, Aug 2, 2011 at 7:49 AM, Lydia Wachsmuth <
>> lydia.wachsmuth at uni-muenster.de> wrote:
>>
>>> Hello,
>>> I am trying to remove bad images from my DTI-datasets.
>>> I work with Bruker data, 5 A0images, 30 directions (2 experiments / diff
>>> direction).
>>> I can load the data to the original image window, and cross out selected
>>> images. How do I save at this step in order to get the .flg file?
>>> Any suggestion will be appreciated
>>> Thank you
>>> Best,
>>> Lydia
>>>
>>> --
>>> Dr. phil.nat. Lydia Wachsmuth
>>> AG Experimentelle Magnetische Kernresonanz
>>> Institut für Klinische Radiologie - Universitätsklinikum Münster
>>> Westfälische Wilhelms-Universität Münster
>>> Waldeyerstr. 1 (Haus Rosenbach)
>>> 48149 Münster
>>> GERMANY
>>> Tel: +49 251 83 56146
>>> Fax: +49 251 83 52067
>>>
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>>
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