Creatis- Univesity of Lyon || NTNU || Technical University of Denmark

About

Evaluation framework
Each reconstruction method will be evaluated on the dataset presented above. For each data, a set of 75 steered plane-waves with angles from -16° to +16° has been simulated or acquired. The corresponding rawdata were saved either in RF or in IQ format (e.g. dataset_rf_numerical_pht.hdf5 and dataset_iq_numerical_pht.hdf5). In order to be as flexible as possible (in terms of programming language), each data has been saved in "hdf5" file format.
Numerical phantom

The figure below displays the numerical phantom that has been generated for the PICMUS framework purpose. Figure (a) corresponds to the backscattered amplitude of the scatterers used in the simulation. We set 20 scatterers per resolution cell. Figure (b) corresponds to the correspoding reconstructed image using the standard DAS technique with 75 plane-waves.

illustration of the numerical phantom used in the PICMUS framework

In vitro dataset

Based on the CIRS physcial phantom (040GSE model), we performed 3 series of acquisitions for different localizations. Each serie allows measuring a subset of the full metrics. For each of the three localizations, we acquired a serie of data with some variabilities on the positionning of the probe: i.e. small translations and 180° rotation of the probe. The goal is to measure the robustness of the different methods with respect to the acquisition conditions.

The figure below displays a sample for each image series of the three localizations.

illustration of the in vitro data used in the PICMUS framework