Local Transverse-Slice-Based Level-Set Method for Segmentation of 3-D High-Frequency Ultrasonic Backscatter From Dissected Human Lymph Nodes

2017 ◽  
Vol 64 (7) ◽  
pp. 1579-1591 ◽  
Author(s):  
Thanh Minh Bui ◽  
Alain Coron ◽  
Jonathan Mamou ◽  
Emi Saegusa-Beecroft ◽  
Tadashi Yamaguchi ◽  
...  
Keyword(s):  
Lymph Nodes ◽  
Level Set Method ◽  
Level Set ◽  
High Frequency ◽  
Ultrasonic Backscatter ◽  
Transverse Slice

Simulation of Propagating Acoustic Wavefronts with Random Sound Speed

2014 ◽  
Vol 16 (4) ◽  
pp. 1081-1101
Author(s):  
Sheri L. Martinelli
Keyword(s):  
Monte Carlo ◽  
Level Set Method ◽  
Level Set ◽  
High Frequency ◽  
Sound Speed ◽  
Input Data ◽  
Eikonal Equation ◽  
Random Variables ◽  
Full Field ◽  
Sources Of Uncertainty

AbstractA method for simulating acoustic wavefronts propagating under random sound speed conditions is presented. The approach applies a level set method to solve the Eikonal equation of high frequency acoustics for surfaces of constant phase, instead of tracing rays. The Lagrangian nature often makes full-field ray solutions difficult to reconstruct. The level set method captures multiple-valued solutions on a fixed grid. It is straightforward to represent other sources of uncertainty in the input data using this model, which has an advantage over Monte Carlo approaches in that it yields an expression for the solution as a function of random variables.

Level Set Method Optimized with the Euclidean Distance Transform

2019 ◽  
Author(s):  
Luis Fernando Segalla ◽  
Alexandre Zabot ◽  
Diogo Nardelli Siebert ◽  
Fabiano Wolf
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Euclidean Distance ◽  
Distance Transform ◽  
Euclidean Distance Transform
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