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Benchuchu
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re: Developing the world's first real-time 3D OCT medical imaging system
Benchuchu   6/21/2011 3:00:46 AM
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I strongly agree with solarpower44. The FIRST realtime 3D (or 4D)OCT system was developed by the group at Johns Hopkins using GPU for both OCT image reconstruction (A-scan processing)and volume rendering. While this work uses FPGA for reconstruction and GPU volume rendering. The FPGA method has also been tried before [1,2]. Personally I prefer the GPU method with CUDA since it's the most cost effective approach. The FPGA module should also realize the function but it would cost much more money than a regular GPU. [1] T. E. Ustun, N. V. Iftimia, R. D. Ferguson, and D. X. Hammer, “Real-time processing for Fourier domain optical coherence tomography using a field programmable gate array,” Review of Scientific Instruments 79, 114301 (2008). [2] A. E. Desjardins, B. J. Vakoc, M. J. Suter, S. H. Yun, G. J. Tearney, B. E. Bouma, “Real-time FPGA processing for high-speed optical frequency domain imaging,” IEEE Transactions on Medical Imaging 28, 1468-1472 (2009).

particle60
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re: Developing the world's first real-time 3D OCT medical imaging system
particle60   5/23/2011 11:13:55 PM
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Hi, The image penetration depth is the length of actually acquired image in the direction of depth from the surface.

krisi
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re: Developing the world's first real-time 3D OCT medical imaging system
krisi   5/19/2011 1:41:09 PM
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To @particle60: what is the image penetration depth? Kris

particle60
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re: Developing the world's first real-time 3D OCT medical imaging system
particle60   5/19/2011 7:18:38 AM
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I checked the works cited by solarpower44 because I got interested in. Although they actually showed some real-time OCT, I think it is insufficient for MEDICAL IMAGING both in the image size and the image penetration depth. It seems this work's designs fit a bit better to target medical use as the title shows.

solarpower44
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re: Developing the world's first real-time 3D OCT medical imaging system
solarpower44   5/5/2011 7:54:11 PM
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This is not true. This is not the first real-time OCT. Too bad they don't cite other works. for example: Graphics Processing Unit Accelerated Non-uniform fast Fourier transform for ultrahigh-speed, real-time Fourier-domain OCT,” Opt. Exp., vol. 18, Iss. 22, pp. 23472-23487, Oct., 2010 Real-time 4D signal processing and visualization using graphics processing unit on a regular nonlinear-k Fourier-domain OCT system,” Optics Express, Vol. 18, Issue 11, pp. 11772-11784, 2010

krisi
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re: Developing the world's first real-time 3D OCT medical imaging system
krisi   5/2/2011 10:35:58 PM
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Agreed with SpeedEvil: it is an exciting but largely complementary technology to MRI or PET...I am editing a book on medical imaging for Wiley, looking for someone to write a chapter on OCT, if interested pls email: kris.iniewski@gmail.com, Kris

SpeedEvil
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re: Developing the world's first real-time 3D OCT medical imaging system
SpeedEvil   5/2/2011 5:29:30 PM
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MRI is great. MRI is also hideously expensive. OCT is potentially a lot cheaper than MRI, with faster scanning, but it does have severe limitations as to the depth of objects it can sense. It's another tool in the arsenal, not a magic bullet.

pip_010
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re: Developing the world's first real-time 3D OCT medical imaging system
pip_010   4/27/2011 10:11:51 AM
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well mri is 3D volume, not surface ! also 7T-mri can provide amazing detail with resolution : fraction of the millimeter in voxel size. anatomical scans do not require toxic fluids for contrast etc. and it is noninvasive and safe. bad sides : digestive and respiratory systems are notoriously hard in MRI, though SWIFT seems to mitigate the issue. real-time is challenging due to immense post-processing, though using GPU and distributed-cluster should be a viable option for MRI too.

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