k-Wave

1. jackYANG
   

   Member
   Joined: Oct '19
   Posts: 69

   Hi everyone,
   I have been simulating phased-array ultrasound focusing through multiple layers of biological tissue (skin, fat and muscle)，at present, I am confused about the definition of these organizational parameters, can you help me find the accurate parameters(media.alpha_power,media.alpha_coeff,BonA)? If my media.alpha_power =1.1, f=1MHz, how can I define the correct media.alpha_coeff with three layers of organization.Also, who can tell me what BonA is,how does it affect the simulation of the kwave sound field,I know it can be defined as a matrix form,How do I correctly define nonlinear parameters from the literature or database to kwave， and it  would be nice to get your answer.

   Posted 6 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Jack,

   I've answered this before in this post.

   Each of the parameters can be defined as a matrix. See for example, the Heterogeneous Propagation Medium Example in MATLAB. The absorption and nonlinearity can be defined in the same way.

   Brad.

   Posted 6 years ago #

3. jackYANG
   

   Member
   Joined: Oct '19
   Posts: 69

   Hi Brad,
   thanks for your patient reply.

   Posted 6 years ago #

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