Hartung-Gorre Verlag

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Series in Microelectronics

edited by       Qiuting Huang

Andreas Schenk

Mathieu Maurice Luisier

Bernd Witzigmann

Vol. 236






Pascal Alexander Hager


Design of Fully-Digital

Medical Ultrasound Imaging



2019. XVI, 192 pages. € 64,00.

ISBN 978-3-86628-649-8
















Ultrasound imaging is one of the most used clinical imaging modalities thanks to its real-time output, ease-of-use, portability and low cost.  From its inception, ultrasound imaging strongly relied on hardware innovations to be the enabler for new imaging modalities and system architectures.

In this thesis, several hardware innovations for future ultrasound systems are explored that focus on replacing analog system parts with digital solutions.  In a first part, fully-digital beamformers for 3D imaging are investigated as an alternative to replace existing mixed-signal solutions.  In a second part, a new system architecture for software-defined 2D imaging is explored.  To showcase the concept, a novel ultrasound probe was designed, which embeds an entire 64-channel ultrasound front-end within the probe handle, and provides access to the digitized sensor data over a 25 Gbit/s fiber-optics interface. This optical connector replaces the expensive analog cable harness used in conventional probes. The probe was then connected to an off-the-shelf PC equipped with a powerful GPU to demonstrate that advanced computeintensive ultrasound modalities can be implemented at low cost.


About the Author


Pascal Alexander Hager was born in Oberdiessbach, Switzerland, in 1990.  He received his M.Sc. degree in electrical engineering and information technology from ETH Zurich in 2014. He then joined the group of Prof. Dr. Luca Benini at the Integrated Systems Laboratory (IIS) at ETH Zurich. His research interests include medical ultrasound imaging, digital signal processing and low-power integrated circuit design.


Keywords: Ultrasound Imaging, Medical Imaging, Digital Ultrasound Probe, Software-defined Ultrasound, Ultrafast Imaging, Beamformer, GPU Beamforming, 3D ultrasound, Multiplexer Probe, Optical Link



Series in Microelectronics

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