k-Wave

1. Kevin Mattheus Moerman
   

   Member
   Joined: Dec '12
   Posts: 2

   I am interested in numerical evaluation of elastic parameter inversion algorithms for MR Elastography (MRE).

   (In MRE the tissue is vibrated using an external actuator and MRI is used to image the resulting microscopic 3D displacements throughout the field of view. The curl of the data is used to suppress the effects of the compressional wave and shear is thus the mode of interest)

   Essentially I want to simulated (shear) wave propagation in an anisotropic (e.g. transversely isotropic or orthotropic) medium. It is often assumed that, following the application of external shear waves, the medium is harmonically oscillating in steady state. Given that simplification, can this toolbox be of use?

   Instead of initial pressures could one specify initial stiffness tensors/parameters?

   Thanks,

   Kevin

   Posted 11 years ago #

2. bencox
   

   Developer
   Joined: Mar '10
   Posts: 292

   Hi Kevin,

   At the moment k-Wave just simulates wave propagation in fluids (so no shear), although there is a plan in the future to add an elastic wave code which will include shear. I can't promise exactly when, but we're on the case!

   Regards,

   Ben

   Posted 11 years ago #

3. HaiPhong
   

   Member
   Joined: Oct '13
   Posts: 2

   Hi Ben,
   I'm looking for your release to suitable for simulation of harmonic shear wave propagation.I thinks it's very good if this tool support to shear wave propagation.
   I hope to see it soon.
   Thanks
   Haiphong.

   Posted 10 years ago #

4. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Haiphong, see my reply to your other question here.

   Posted 10 years ago #

5. Kevin Mattheus Moerman
   

   Member
   Joined: Dec '12
   Posts: 2

   Any new developments on 3D harmonic shear wave simulation?

   Posted 10 years ago #

6. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Kevin,

   The latest release of k-Wave (V1.1) includes a linear elastic code for isotropic media. This allows you to specify both velocity and stress sources. We are planning to extend this to orthotropic materials in future releases.

   Brad.

   Posted 10 years ago #

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