[Mristudio-users] Side-by-Side Configuration

[Shukla, Karan]

THANKS!


________________________________________
From: mristudio-users-bounces at mristudio.org [mristudio-users-bounces at mristudio.org] On Behalf Of Xin Li [xli16 at jhmi.edu]
Sent: Monday, September 27, 2010 10:44 AM
To: DTI Studio, ROI Editor,     DiffeoMap Questions/Support
Subject: Re: [Mristudio-users] Side-by-Side Configuration

Hello,

DtiStudio is a Microsoft Visual Studio application. You need to run the Microsoft Visual Studio Redistribution package "vcredist_x86.exe" before you run DtiStudio. The file "veredist_x86.exe" is available at https://www.mristudio.org/wiki/installation.

Regards,

Xin

----- Original Message -----
From: "Shukla, Karan" <Karan.Shukla at uth.tmc.edu>
Date: Monday, September 27, 2010 10:25 am
Subject: Re: [Mristudio-users] Side-by-Side Configuration
To: "DTI Studio, ROI Editor,    DiffeoMap Questions/Support" <mristudio-users at mristudio.org>


> I am working on a window 7, 32-bit OS and when trying to install DTI
> Studio i receive an error saying the side by side configuration is not
> correct and to please check event log or command line.....Any advice
> on troubleshooting this problem.
>
>  Thanks
>
>  ________________________________________
>  From: mristudio-users-bounces at mristudio.org
> [mristudio-users-bounces at mristudio.org] On Behalf Of Makki Malek [Malek.Makki at kispi.uzh.ch]
>  Sent: Saturday, September 25, 2010 12:07 PM
>  To: DTI Studio, ROI Editor,DiffeoMap Questions/Support
>  Subject: Re: [Mristudio-users] What is the difference between a TR
> 7500 and a TR 17000?
>
>   If you are using 2 Nex and no ASSET, than it is normal to take 10
> min. It is like acquiring 65 directions + 1 T2w. But I don't
> understnad the reason of the noise. With standard excitation I expect
> chemical shift artefact.
>
>  I recommend ASSET which will reduce the distortion and improve
> acquistion time. Any reason for not selecting it?
>
>  Regards
>
>
>  ________________________________
>
>  From: mristudio-users-bounces at mristudio.org on behalf of Lucas Lessa
>  Sent: Sat 9/25/2010 3:14 PM
>  To: ROI Editor DiffeoMap Questions/SupportDTI Studio
>  Subject: Re: [Mristudio-users] What is the difference between a TR
> 7500 and a TR 17000?
>
>
>  Good Morning Malek,
>
>  I'm using a 128x128 matrix, no ASSET, minimum TE and the  standard
> excitation with FatSat is turned off too.
>  I tried to cover the entire brain, using multiple directions (33) and
> 2 NEX.
>  The sequence takes about 10 min and the noise is quite significant.
>  Thank you.
>
>
>  --- Em sex, 24/9/10, Makki Malek <Malek.Makki at kispi.uzh.ch> escreveu:
>
>
>
>          De: Makki Malek <Malek.Makki at kispi.uzh.ch>
>          Assunto: Re: [Mristudio-users] What is the difference between
> a TR 7500 and a TR 17000?
>          Para: "DTI Studio, ROI Editor,DiffeoMap Questions/Support" <mristudio-users at mristudio.org>
>          Data: Sexta-feira, 24 de Setembro de 2010, 3:27
>
>
>
>          I agree with Susumo however there are some differences
> between vendors
>
>
>
>          We have similar GE system and I am sure that TR=17s is quite
> long for 33 directions and 50 slices.
>
>
>
>          Are you using 128x128 matrix? Asset On? optimal TE?
>
>
>
>          These systems do not allow to go below 2.5mm slice thickness
> with spectral slice excitation. Are you using standard excitation with
> FatSat which may increase SAR and thus increase the TR to compensate with
>
>
>
>          Con you provide further information about your protocol to
> figure it out
>
>
>
>          Regards
>
>
>
>          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>          Malek I. Makki, PhD
>
>          Diagnostic Imaging Department
>
>          MRI Center
>
>          Kinderspital Zurich
>
>
>
>          Phone. +41(0)44 266 3130
>
>          Fax:      +41(0)44 266 7153
>
>          malek.makki at kispi.uzh.ch
>
>          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
>
>
>
>
>
>  ________________________________
>
>
>          From: mristudio-users-bounces at mristudio.org [ On Behalf Of
> susumu mori
>          Sent: Thursday, September 23, 2010 11:28 PM
>          To: DTI Studio, ROI Editor, DiffeoMap Questions/Support
>          Subject: Re: [Mristudio-users] What is the difference between
> a TR 7500 and a TR 17000?
>
>
>
>          Usually, one-slice single-shot imaging takes less than 150ms,
> I believe. 50 slices thus should take about 50 x 150ms = 7.5 s.
>
>          This is the repetition time; within this time you are done
> with one 3D volume. With 33 directions and 3 b0s, for example, you
> spend 7.5s x 36 images = 4.5 min.
>
>
>
>          If you use repetition time of 17s, your total imaging time
> will be 17s x 36 = 10 min.
>
>
>
>          So, I would say, 17s is a bit too long and I recommend you to
> use the shortest TR, if possible.
>
>          I noticed that some older GE scanners do not allow to use the
> minimum TR such as 7.5s probably due to gradient heating. So, if the
> 17s is the shortest you can do, then, that is your only option.
>
>
>
>          Other than that, 2.2 mm isotropic could be a bit too small
> for 1.5T with 33 DWIs. The SNR may be a noisy side depending on your
> coil performance. We do 2.5 mm for 1.5T
>
>          On Thu, Sep 23, 2010 at 11:51 AM, Lucas Lessa
> <lucas_lessa at yahoo.com.br> wrote:
>
>  Dear friends,
>
>  I made a new protocol for a GE 1,5T HDX, using 33 directions and 50
> slices with 2.2 mm thickness.
>  I did this because the vendor programmed a sequence that uses only 12
> directions, 20 slices with 5 mm tichness and 1 NEX.
>  I tried to obtain an isotropic image with more signal.
>  But to to this I've changed the TR to 17000 (the maximum).
>  Is there any problem?
>  And, if is possible, can anyone explain for me the significance of this?
>  Thank you very much.
>
>  Lucas Lessa.
>
>
>
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>
>
>
>          -----Anexo incorporado-----
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