How far is the automated 3-D segmentation of Brain MRI efficient compared to manual segmentation?

3d scanner using matlab image

Sandhya

We are doing a project on automated 3-D segmentation of brain MRI using MATLAB. We would like to know the extent to which "Surf" commands are efficient in producing reliable segmented 3-D image. The accuracy level, how much it is better compared to manual segmentation. We need statistical detail, kindly help us....

Answer
This correspondence deals with the development of an
automated 3-D segmentation of Brain MRI. The proposal is a
model-based approach for accurate, robust, and automated
tissue segmentation of brain MRI data of single as well as
multiple magnetic resonance sequences. The main contribution
of this study is that we employ an edge-based geodesic active
contour for the segmentation task by integrating both image
edge geometry and voxel statistical homogeneity into a novel
hybrid geometricâstatistical feature to regularize contour
convergence and extract complex anatomical structures. We
validate the accuracy of the segmentation results on simulated
brain MRI scans of both single T1-weighted and multiple T1/
T2/PD-weighted sequences. When compared to a current stateof-
the-art region based level-set segmentation formulation,
our white matter and gray matter segmentation resulted in
significantly higher accuracy levels with a mean improvement
in Dice similarity indexes. Thus the development of the project
is done using MATLAB simulation for results.
A Hybrid Automated 3D Segmentation in Brain MRI -------------------------------------------------------- Advantages of a MRI scan
⢠MRI scanners are good at looking at the non-bony parts
or "soft tissues" of the body. In particular, the brain, spinal
cord and nerves are seen much more clearly with MRI
than with regular x-rays and CAT scans.
⢠Also, muscles, ligaments and tendons are seen quite well
so that MRI scans are commonly used to look at knees
and shoulders following injuries.
⢠A MRI scanner uses no x-rays or other radiation.
⢠A disadvantage of MRI is itâs higher cost compared to a
regular x-ray or CAT scan. Also, CAT scans are frequently
better at looking at the bones that MRI.

ATi FirePRO V 8200 vs. Ati HD 5970?

Questioner

Which is better? Are both of these cards one of the same? Like how the ATi FirePRO M74820 is based on the HD 5870MR?

So I'm a engineering student (Aerospace):

My plan:

I'm wanting a laptop for a multipurpose reason. Be it entertainment, school, research (either school or independent) or gaming (as i might not take my PS3). So this is what I'm planning to do:
What I know I will be doing is 3D modeling, simulation, physics simulation, HE Physics (might take a double major), Quantum Mechanics, Data crunching, Algorithms, Programming (both High and Low Level), image/video analysis, conversion of natural algorithms (Image, Audio, Video into pure data), research/analysis maybe on the unknown/unseen/beyond (hard to explain ), being able to customize and create specialized functions, hacking/cracking/modifying, etc. Now i don't want any flame wars, but i wanted to do my own research, even though i know for a fact we might have to use the supercomputers and such for projects in university. So i believe some nice people here told me that just get a powerful cpu and gpu to handle your personal research but don't depend on it or something like that

Also these are the programs I plan to utilize in uni:
ABAQUS ADAMS Software
Adobe Acrobat ANSYS ASPEN HYSYS
ASTOS AUTOMATED DESIGN Backups and Creating CD-ROMS
C/C++ Carleton Site License Software CES4
Course NewsGroups Course Web Pages E-Mail
Femap FORTRAN Gas Turbine 9
GESOP Internet Securiety Lab Access
LABVIEW LINUX Loftsman
LS-DYNA MAPLE MATHCAD
Mathematica MATLAB MSC SOFTWARE
MS OFFICE Nastran, Patran, ... Printing
PTC Pro Engineer Rapid Prototyping Scanner
STK Tecplot Technical Support

Also i talked to some students and they did useAutoCAD, 3DS max and stuff as well!

So which GPU will most likely help me? Also is a core 2 quad Q8200 enough? or do I really really need to get a intel i7?

Answer
None of the applications listed are especially demanding from a graphical standpoint, so your selection for the GPU would have to be based on some other graphic intensive programs you plan to run on the same computer.

The multi-core option appeal is also limited by how many concurrent applications you will run, unless you develop multi-threaded or parallel algorithms.
Still, a general rule of thumb is that one should get the most powerful machine you can reasonably afford, if anything to future-proof your investment as much as possible.

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