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Ward RE, Martinez-Correa S, Tierradentro-García LO, Hwang M, Sehgal CM. Sonothrombolysis: State-of-the-Art and Potential Applications in Children. CHILDREN (BASEL, SWITZERLAND) 2023; 11:57. [PMID: 38255371 PMCID: PMC10814591 DOI: 10.3390/children11010057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/15/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
In recent years, advances in ultrasound therapeutics have been implemented into treatment algorithms for the adult population; however, the use of therapeutic ultrasound in the pediatric population still needs to be further elucidated. In order to better characterize the utilization and practicality of sonothrombolysis in the juvenile population, the authors conducted a literature review of current pediatric research in therapeutic ultrasound. The PubMed database was used to search for all clinical and preclinical studies detailing the use and applications of sonothrombolysis, with a focus on the pediatric population. As illustrated by various review articles, case studies, and original research, sonothrombolysis demonstrates efficacy and safety in clot dissolution in vitro and in animal studies, particularly when combined with microbubbles, with potential applications in conditions such as deep venous thrombosis, peripheral vascular disease, ischemic stroke, myocardial infarction, and pulmonary embolism. Although there is limited literature on the use of therapeutic ultrasound in children, mainly due to the lower prevalence of thrombotic events, sonothrombolysis shows potential as a noninvasive thrombolytic treatment. However, more pediatric sonothrombolysis research needs to be conducted to quantify the safety and ethical considerations specific to this vulnerable population.
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Affiliation(s)
- Rebecca E. Ward
- Department of Radiology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (R.E.W.); (S.M.-C.); (L.O.T.-G.); (M.H.)
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Santiago Martinez-Correa
- Department of Radiology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (R.E.W.); (S.M.-C.); (L.O.T.-G.); (M.H.)
| | - Luis Octavio Tierradentro-García
- Department of Radiology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (R.E.W.); (S.M.-C.); (L.O.T.-G.); (M.H.)
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Misun Hwang
- Department of Radiology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (R.E.W.); (S.M.-C.); (L.O.T.-G.); (M.H.)
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Chandra M. Sehgal
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Xue X, Zhang B, Moon S, Xu GX, Huang CC, Sharma N, Jiang X. Development of a Wearable Ultrasound Transducer for Sensing Muscle Activities in Assistive Robotics Applications. BIOSENSORS 2023; 13:134. [PMID: 36671969 PMCID: PMC9855872 DOI: 10.3390/bios13010134] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
Robotic prostheses and powered exoskeletons are novel assistive robotic devices for modern medicine. Muscle activity sensing plays an important role in controlling assistive robotics devices. Most devices measure the surface electromyography (sEMG) signal for myoelectric control. However, sEMG is an integrated signal from muscle activities. It is difficult to sense muscle movements in specific small regions, particularly at different depths. Alternatively, traditional ultrasound imaging has recently been proposed to monitor muscle activity due to its ability to directly visualize superficial and at-depth muscles. Despite their advantages, traditional ultrasound probes lack wearability. In this paper, a wearable ultrasound (US) transducer, based on lead zirconate titanate (PZT) and a polyimide substrate, was developed for a muscle activity sensing demonstration. The fabricated PZT-5A elements were arranged into a 4 × 4 array and then packaged in polydimethylsiloxane (PDMS). In vitro porcine tissue experiments were carried out by generating the muscle activities artificially, and the muscle movements were detected by the proposed wearable US transducer via muscle movement imaging. Experimental results showed that all 16 elements had very similar acoustic behaviors: the averaged central frequency, -6 dB bandwidth, and electrical impedance in water were 10.59 MHz, 37.69%, and 78.41 Ω, respectively. The in vitro study successfully demonstrated the capability of monitoring local muscle activity using the prototyped wearable transducer. The findings indicate that ultrasonic sensing may be an alternative to standardize myoelectric control for assistive robotics applications.
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Affiliation(s)
- Xiangming Xue
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Bohua Zhang
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Sunho Moon
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Guo-Xuan Xu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chih-Chung Huang
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Nitin Sharma
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Xiaoning Jiang
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
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