RF data for the scientific research in MATLAB environment
Majority of the commercial ultrasound machines are closed for the researchers and do not provide access to raw RF signals. These signals carry valuable information about acoustic wave and tissue interactions and it could be employed fo the developments of new diagnostic methods. TELEMED offers research tools for scientific engineers working in biomedical ultrasound field which allows to analyze RF data acquired by the new generation TELEMED ultrasound scanner ArtUs which is currently in the pre-release stage.

The research package is implemented in the MATLAB® (MathWorks, Inc., Natick, Massachusetts) environment and contains graphical user interfaces (Figs. 1-5) which allows to import and review annotated RF data and collection of scripts illustrating conventional RF signal processing steps, which are typically used in the B mode image formation engine.

The tools open new possibilities for:

Engineering viewpoint

Clinical practice viewpoint

  • Developments of novel ultrasonic quantitative tissue characterisation methods
  • Derivation of novel biomarkers for: recognition, characterisation and differentiation of various lesions and assessment of treatment (i.e. thermal ablation efficiency, sonoporation)
  • Investigation of acoustic properties of tissue and tissue mimicking materials
  • In-vitro studies of tissue (i.e. investigation of biopsy samples)
  • Developments of novel parametric imaging techniques
  • New sources of contrast for imaging of various lesions (tumors, tissue fibrosis, atherosclerotic plaques and much more)
  • Creation of advanced digital image processing algorithms for speckle reduction, and image enhancement
  • Better quality of ultrasound diagnostic images more appropriate for visual expert’s evaluation
Tool allows to observe in realtime 2 streams, B+RF. Also tool allows to set scanning parameters, define area of interest, record RF data to disc and etc. C++ application.
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Fig. 1. RF Data Control tool

Tool allows to import into MATLAB and review recorded RF data and the main data acquisition parameters. MATLAB tool.
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Fig. 2. RF Data tool

Tool allows to filter acquired RF signals and to observe how the filtering influence to final ultrasonic B mode image. Various filters could be designed by using GUI. MATLAB tool.
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Fig. 3. Filters Analysis tool

The GUI allows to adjust dynamic range reduction curve and to observe how it affects final B mode image. MATLAB tool.
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Fig. 4. Dynamic Range control tool

The GUI allows to filter speckle noises. MATLAB tool.
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Fig. 5. Postprocessing control tool

The GUI allows to load and view RF data. Python tool.
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Fig. 6. RF Viewer tool

Tools, MATLAB scripts, Python scripts, source codes and manuals you can download here.