Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging

Ultrasound imaging is widely valued for its safety, non-invasiveness, and real-time capabilities but is often limited by operator variability, affecting image quality and reproducibility. Robot-assisted ultrasound may provide a solution by delivering more consistent, precise, and faster scans, poten...

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Main Authors: Yixuan Zheng, Hongyuan Ning, Eason Rangarajan, Aban Merali, Adam Geale, Lukas Lindenroth, Zhouyang Xu, Weizhao Wang, Philipp Kruse, Steven Morris, Liang Ye, Xinyi Fu, Kawal Rhode, Richard James Housden
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Sensors
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Online Access:https://www.mdpi.com/1424-8220/25/2/468
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author Yixuan Zheng
Hongyuan Ning
Eason Rangarajan
Aban Merali
Adam Geale
Lukas Lindenroth
Zhouyang Xu
Weizhao Wang
Philipp Kruse
Steven Morris
Liang Ye
Xinyi Fu
Kawal Rhode
Richard James Housden
author_facet Yixuan Zheng
Hongyuan Ning
Eason Rangarajan
Aban Merali
Adam Geale
Lukas Lindenroth
Zhouyang Xu
Weizhao Wang
Philipp Kruse
Steven Morris
Liang Ye
Xinyi Fu
Kawal Rhode
Richard James Housden
author_sort Yixuan Zheng
collection DOAJ
description Ultrasound imaging is widely valued for its safety, non-invasiveness, and real-time capabilities but is often limited by operator variability, affecting image quality and reproducibility. Robot-assisted ultrasound may provide a solution by delivering more consistent, precise, and faster scans, potentially reducing human error and healthcare costs. Effective force control is crucial in robotic ultrasound scanning to ensure consistent image quality and patient safety. However, existing robotic ultrasound systems rely heavily on expensive commercial force sensors or the integrated sensors of commercial robotic arms, limiting their accessibility. To address these challenges, we developed a cost-effective, lightweight, 3D-printed force sensor and a hybrid position–force control strategy tailored for robotic ultrasound scanning. The system integrates patient-to-robot registration, automated scanning path planning, and multi-sensor data fusion, allowing the robot to autonomously locate the patient, target the region of interest, and maintain optimal contact force during scanning. Validation was conducted using an ultrasound-compatible abdominal aortic aneurysm (AAA) phantom created from patient CT data and healthy volunteer testing. For the volunteer testing, during a 1-min scan, 65% of the forces were within the good image range. Both volunteers reported no discomfort or pain during the whole procedure. These results demonstrate the potential of the system to provide safe, precise, and autonomous robotic ultrasound imaging in real-world conditions.
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institution Kabale University
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series Sensors
spelling doaj-art-46d1480e04874af2a7cdf7243668ad482025-01-24T13:49:03ZengMDPI AGSensors1424-82202025-01-0125246810.3390/s25020468Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound ImagingYixuan Zheng0Hongyuan Ning1Eason Rangarajan2Aban Merali3Adam Geale4Lukas Lindenroth5Zhouyang Xu6Weizhao Wang7Philipp Kruse8Steven Morris9Liang Ye10Xinyi Fu11Kawal Rhode12Richard James Housden13School of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Medicine, Southern University of Science and Technology, Shenzhen 518055, ChinaSchool of Medicine, Southern University of Science and Technology, Shenzhen 518055, ChinaSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKSchool of Biomedical Engineering and Imaging Sciences, King’s College London, London SE1 7EH, UKUltrasound imaging is widely valued for its safety, non-invasiveness, and real-time capabilities but is often limited by operator variability, affecting image quality and reproducibility. Robot-assisted ultrasound may provide a solution by delivering more consistent, precise, and faster scans, potentially reducing human error and healthcare costs. Effective force control is crucial in robotic ultrasound scanning to ensure consistent image quality and patient safety. However, existing robotic ultrasound systems rely heavily on expensive commercial force sensors or the integrated sensors of commercial robotic arms, limiting their accessibility. To address these challenges, we developed a cost-effective, lightweight, 3D-printed force sensor and a hybrid position–force control strategy tailored for robotic ultrasound scanning. The system integrates patient-to-robot registration, automated scanning path planning, and multi-sensor data fusion, allowing the robot to autonomously locate the patient, target the region of interest, and maintain optimal contact force during scanning. Validation was conducted using an ultrasound-compatible abdominal aortic aneurysm (AAA) phantom created from patient CT data and healthy volunteer testing. For the volunteer testing, during a 1-min scan, 65% of the forces were within the good image range. Both volunteers reported no discomfort or pain during the whole procedure. These results demonstrate the potential of the system to provide safe, precise, and autonomous robotic ultrasound imaging in real-world conditions.https://www.mdpi.com/1424-8220/25/2/468robot-assisted ultrasound imagingforce control for robotic systemsforce sensor designmedical roboticsmulti-sensor fusionultrasound-compatible phantom design
spellingShingle Yixuan Zheng
Hongyuan Ning
Eason Rangarajan
Aban Merali
Adam Geale
Lukas Lindenroth
Zhouyang Xu
Weizhao Wang
Philipp Kruse
Steven Morris
Liang Ye
Xinyi Fu
Kawal Rhode
Richard James Housden
Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
Sensors
robot-assisted ultrasound imaging
force control for robotic systems
force sensor design
medical robotics
multi-sensor fusion
ultrasound-compatible phantom design
title Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
title_full Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
title_fullStr Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
title_full_unstemmed Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
title_short Design of a Cost-Effective Ultrasound Force Sensor and Force Control System for Robotic Extra-Body Ultrasound Imaging
title_sort design of a cost effective ultrasound force sensor and force control system for robotic extra body ultrasound imaging
topic robot-assisted ultrasound imaging
force control for robotic systems
force sensor design
medical robotics
multi-sensor fusion
ultrasound-compatible phantom design
url https://www.mdpi.com/1424-8220/25/2/468
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