[Mristudio-users] Overplus

[Prachi Dubey]

Hi All,
Has anyone had issues with gradient overplus on option with the Philips
Data. I have Philips dataset, with Overplus on and the rotate gradient
option should be checked for this datset. However, fiber tracking is not
accurate with the rotate option checked on. It is accurate without the
option.

Anyone faced this issue.

Prachi

On Tue, Aug 26, 2014 at 11:50 AM, Susumu Mori <smoriw at gmail.com> wrote:

> Hi Amit,
>
> The Talairach template is usually used to a rough estimation of the brain
> coordinates and, in my understanding, rarely used as a target of volume
> measurements.
> I must admit that we haven't used this template for volume measurements
> either.
>
> I would recommend you to use our MNI templates such as JHU-ss
> (single-subject).
>
> We are about to release an entirely new pipeline for T1/DTI segmentation
> based on a multi-atlas approach. I hope this will be a better solution for
> you in the near future.
>
>
> On Mon, Aug 25, 2014 at 9:11 AM, Amit Wani <amitwani111 at gmail.com> wrote:
>
>> Dear Experts,
>>
>> I am trying to calculate volumes of some structures (hippocampus,
>> cingulum etc) in T1 anatomical images. I used JHU Talairach template (1x1x1
>> mm3) available in ROIEditor as my reference image for analysis. I saved the
>> predefined ROIs for the structures as well.
>>
>> But when i calculated the volumes of these ROIs, they look little higher.
>> For example, for right side of hippocampus, number of voxels are 5901
>> (i.e., volume 5.9 cm3). But in literature, the volumes are in the range of
>> 2.5 - 3 cm3. Why is this difference?
>>
>> Thank you,
>> Amit.
>>
>>
>>
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>
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