Search found 13 matches

by Zahir Momin
Fri Sep 03, 2004 6:36 pm
Forum: BrainVISA
Topic: whole brain/slice histogram from FA and ADC Maps
Replies: 1
Views: 5852

whole brain/slice histogram from FA and ADC Maps

I was wondering if there is any way in anatomist to create whole brain histograms based on FA or ADC maps. Ideally I would like to exclude CSF from this histogram. Also, is it possible to create whole slice histogram based on FA or ADC maps? Again I would like to exclude CSF from this. Thank you for...
by Zahir Momin
Sat Aug 28, 2004 11:01 pm
Forum: BrainVISA
Topic: Region Of Interest Names
Replies: 1
Views: 5538

Region Of Interest Names

Dear Brainvisa users and developers, I am trying to select several regions of interest in the brain. I am very constrained by the choices that are offered in the regions of interest box. I need to name some of these regions of interest unique names such as Left Dentate Nucleus, etc. I was wondering ...
by Zahir Momin
Thu Aug 19, 2004 7:36 pm
Forum: BrainVISA
Topic: Region of Interst Area
Replies: 5
Views: 8055

Dear Riviere

Thank you very much for putting it up so quick.

Zahir
by Zahir Momin
Wed Aug 18, 2004 3:46 pm
Forum: BrainVISA
Topic: Brightness and Contrast
Replies: 1
Views: 5920

Brightness and Contrast

Is there any way to adjust the brightness and contrast when viewing MR images? This feature is customarily used to highling subtle features of a radiograph, CT, or MRI scan.
Zahir
by Zahir Momin
Wed Aug 18, 2004 3:43 pm
Forum: BrainVISA
Topic: Region of Interst Area
Replies: 5
Views: 8055

Dear Riviere

The development version on the website is an earlier version than the release version. Do you know how I can get my hands on the development version.

Zahir
by Zahir Momin
Wed Aug 18, 2004 5:59 am
Forum: BrainVISA
Topic: Can someone explain me how to use DTI interpolated tracking?
Replies: 4
Views: 4727

You should go through the pipeline or manually under diffusion menu's and create all the necessary FA, ADC, VR maps and such. When you want to do DTI interpolated tracking you will need to specify starting points. This is a seed from which tracks will be drawn. To pick this open FA map(any of the ma...
by Zahir Momin
Mon Aug 16, 2004 2:10 am
Forum: BrainVISA
Topic: Diffusion MRI Slice Alignment
Replies: 2
Views: 3908

Diffusion MRI Slice Alignment

Dear BrainVisa users and developers, Again, I am analyzing patient MRI data collected on day 0 and day 5. These are diabetic patients presenting with ketoacidosis(DKA). I need a way to align their MRI slices with each other. Is there any feature in BrainVisa or Anatomist that will allow me to do tha...
by Zahir Momin
Mon Aug 16, 2004 2:07 am
Forum: BrainVISA
Topic: Region of Interst Area
Replies: 5
Views: 8055

Region of Interst Area

Dear BrainVisa users and developers, I am using BrainVisa to to analyze differences in diffusion coefficient on day 0 and day 5 of patients that presented in acute diabetic ketoacidosis. I need to select a ROI of a particular area in terms of mm^2 or cm^2. I am using the Disc and modifiying its size...
by Zahir Momin
Sun Aug 15, 2004 10:34 pm
Forum: BrainVISA
Topic: Fractional Anisotropy & Apparent Diffusion Coefficient S
Replies: 7
Views: 7683

Dear Mr. Mangin, I tried running the AimsVoiStat, but it is not finding its libraries. I have set the environment varibables using the .sh file that is included with brainvisa. I must admit I have never ran any command prompt commands of BrainVisa, but am eager to learn the command prompt stuff beca...
by Zahir Momin
Thu Aug 12, 2004 5:28 am
Forum: BrainVISA
Topic: Fractional Anisotropy & Apparent Diffusion Coefficient S
Replies: 7
Views: 7683

I am using a tool called ImageJ from NIH. It is supposed to be very powerful. It has RAW import. However, I have to specify the data type. And FLOAT is not one of them. I am assuming this is similar to 32 bit unsigned number for freactional anisotropy maps. I tried importing as 32 bit signed, 32 bit...
by Zahir Momin
Wed Aug 11, 2004 1:58 am
Forum: BrainVISA
Topic: Fractional Anisotropy & Apparent Diffusion Coefficient S
Replies: 7
Views: 7683

Fractional Anisotropy & Apparent Diffusion Coefficient S

Dear BrainVisa users and developers, I have generated fractional anisotropy and diffusion coefficient maps of 55 gradient diffusion MRI data. I can see the axial slice represented map in BrainVisa. I can even choose a region of interest. Howerver, I can't see any features in BrainVisa where I can ta...
by Zahir Momin
Sun Aug 08, 2004 8:03 pm
Forum: BrainVISA
Topic: Fiber Track Visualization w/ Anatomic Overlay
Replies: 1
Views: 2999

Fiber Track Visualization w/ Anatomic Overlay

Dear Brainvisa users and Developers, I have generated some fiber tracks using BrainVisa's interpolated tracking system(thanks to support from BrainVisa developers). These fibers are visualized in Anatomist in 3D fashion. However, I am unable to fuse MRI slices with these fibers. I need to do that so...
by Zahir Momin
Sun Jul 18, 2004 8:37 am
Forum: BrainVISA
Topic: DTI Interpolated Tracking
Replies: 1
Views: 3188

DTI Interpolated Tracking

Dear Sir, I am using brainvisa to analyze some DICOM data. My data is in either 25 channel or 56 channels. I first create a database from preference menu. Thereafter I import the DICOM directory files. I am able to user Diffusion Tensor and Diffusion Maps and the output is generated. My sole aim, ho...