This README.txt file was generated on 2024-02-19 by Naiara Korta Martiartu (naiara.korta@unibe.ch) ------------------- GENERAL INFORMATION ------------------- Contributor information: Name: Naiara Korta Martiartu Role/Function: Principal Investigator, Data Collector (main contact person) Institution: Institute of Applied Physics, University of Bern Address: Sidlerstrasse 5, 3012 Bern, Switzerland Email: naiara.korta@unibe.ch Name: Parisa Salemi Yolgunlu Role/Function: Data Collector Institution: Institute of Applied Physics, University of Bern Address: Sidlerstrasse 5, 3012 Bern, Switzerland Name: Martin Frenz Role/Function: Sponsor Institution: Institute of Applied Physics, University of Bern Address: Sidlerstrasse 5, 3012 Bern, Switzerland Name: Michael Jaeger Role/Function: Principal Investigator (alternative contact person) Institution: Institute of Applied Physics, University of Bern Address: Sidlerstrasse 5, 3012 Bern, Switzerland Email: michael.jaeger@unibe.ch Date of data collection: December 2022 - May 2023 Location of data collection: Institute of Applied Physics, University of Bern, Bern, Switzerland Keywords: pulse-echo ultrasound, attenuation imaging, tissue characterization, ultrasound tomography, Funding sources: N. K. M. received support of the University of Bern through the UniBe Initiator Grant to fund the tissue-mimicking phantoms in which the data is collected. This work also received support from Swiss National Science Foundation, Grant number: 205320_179038 ------------------- SHARING/ACCESS INFORMATION ------------------- Related publication: Naiara Korta Martiartu et al. Pulse-echo ultrasound attenuation tomography. Under review in Physics in Medicine and Biology (2024) Related software: https://github.com/naiarako/attomo (DOI: 10.5281/zenodo.10678994) Please cite the accepted version of this publication in case you use the data. --------------------- DATA & FILE OVERVIEW --------------------- File List: Filename: Phantom_I.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom I described in the related publication. Date of creation: 2024-02-19 Filename: Phantom_II.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom II described in the related publication. Date of creation: 2024-02-19 Filename: Phantom_III.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom III described in the related publication. Date of creation: 2024-02-19 Filename: Phantom_IV.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom IV described in the related publication. Date of creation: 2024-02-19 Filename: Phantom_V.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom V described in the related publication. Date of creation: 2024-02-19 Filename: Phantom_VI.zip Short description: Raw radio-frequency signals collected on the custom-made calibrated CIRS phantom VI described in the related publication. Date of creation: 2024-02-19 Filename: Calibration_part1.zip Short description: Raw radio-frequency signals collected on the calibration phantom described in the related publication. First 5 acquisitions from a total of 10 acquisitions. Date of creation: 2024-02-19 Filename: Calibration_part2.zip Short description: Raw radio-frequency signals collected on the calibration phantom described in the related publication. Last 5 acquisitions from a total of 10 acquisitions. Date of creation: 2024-02-19 Filename: read_data.ipynb File type: Jupyter notebook Short description: A python-based jupyter-notebook that shows how to load the raw data in the *.zip files. Date of creation: 2024-02-19 -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection of data: Submitted raw ultrasound signals were collected in custom-made calibrated CIRS phantoms (Computerized Imaging Reference Systems, Inc. Norfolk, VA, USA) with inclusions of varying size, echogenicity, and attenuation. Phantom properties are described in the related publication. Data was collected in each transducer element after sequentially emitting a set of plane waves emission at different steering angles. We used a linear ultrasound that probe contains 256 transducer elements with an inter-element pitch of 0.2 mm. A total of 5 acquisitions were collected for phantoms and 10 for calibration. 2. Methods for processing the data: Submitted data contains raw radio-frequency signals, together with the acquisition properties. These can be accessed using the read_data.ipynb file. 3. Instrument: Data was acquired using the SuperSonic® MACH® 30 ultrasound system (Hologic® - Supersonic Imagine®, Aix en Provence, France) with the L18-5 linear probe. The emitted signal was a sinusoidal burst of three half cycles with a center frequency of 7.5 MHz. The system assumes a speed of sound of 1540 m/s to compute the time delays for steered plane-wave emissions at angles ranging from -27.5° to 27.5°, with an angular step of 0.5°. Sampling frequency: 40 MHz. 4. Calibration: Ten measurements in a homogeneous area of the phantoms were acquired for calibration data included in the zip file. 5. Environmental/experimental conditions: All measurements were taken at room temperature. True properties of the phantoms can be found in the related publication.