1
|
Abadi E, Barufaldi B, Lago M, Badal A, Mello-Thoms C, Bottenus N, Wangerin KA, Goldburgh M, Tarbox L, Beaucage-Gauvreau E, Frangi AF, Maidment A, Kinahan PE, Bosmans H, Samei E. Toward widespread use of virtual trials in medical imaging innovation and regulatory science. Med Phys 2024. [PMID: 39369717 DOI: 10.1002/mp.17442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 09/06/2024] [Accepted: 09/18/2024] [Indexed: 10/08/2024] Open
Abstract
The rapid advancement in the field of medical imaging presents a challenge in keeping up to date with the necessary objective evaluations and optimizations for safe and effective use in clinical settings. These evaluations are traditionally done using clinical imaging trials, which while effective, pose several limitations including high costs, ethical considerations for repetitive experiments, time constraints, and lack of ground truth. To tackle these issues, virtual trials (aka in silico trials) have emerged as a promising alternative, using computational models of human subjects and imaging devices, and observer models/analysis to carry out experiments. To facilitate the widespread use of virtual trials within the medical imaging research community, a major need is to establish a common consensus framework that all can use. Based on the ongoing efforts of an AAPM Task Group (TG387), this article provides a comprehensive overview of the requirements for establishing virtual imaging trial frameworks, paving the way toward their widespread use within the medical imaging research community. These requirements include credibility, reproducibility, and accessibility. Credibility assessment involves verification, validation, uncertainty quantification, and sensitivity analysis, ensuring the accuracy and realism of computational models. A proper credibility assessment requires a clear context of use and the questions that the study is intended to objectively answer. For reproducibility and accessibility, this article highlights the need for detailed documentation, user-friendly software packages, and standard input/output formats. Challenges in data and software sharing, including proprietary data and inconsistent file formats, are discussed. Recommended solutions to enhance accessibility include containerized environments and data-sharing hubs, along with following standards such as CDISC (Clinical Data Interchange Standards Consortium). By addressing challenges associated with credibility, reproducibility, and accessibility, virtual imaging trials can be positioned as a powerful and inclusive resource, advancing medical imaging innovation and regulatory science.
Collapse
Affiliation(s)
- Ehsan Abadi
- Center for Virtual Imaging Trials, Carl E. Ravin Advanced Imaging Laboratories, Departments of Radiology and Electrical & Computer Engineering, Medical Physics Graduate Program, Duke University, Durham, North Carolina, USA
| | - Bruno Barufaldi
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Miguel Lago
- Division of Imaging, Diagnostics and Software Reliability, OSEL, CDRH, U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | - Andreu Badal
- Division of Imaging, Diagnostics and Software Reliability, OSEL, CDRH, U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | | | - Nick Bottenus
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, Colorado, USA
| | - Kristen A Wangerin
- Research and Development, Pharmaceutical Diagnostics, GE HealthCare, Marlborough, Massachusetts, USA
| | | | - Lawrence Tarbox
- Department of Biomedical Informatics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Erica Beaucage-Gauvreau
- Institute of Physics-based Modeling for in silico Health (iSi Health), KU Leuven, Leuven, Belgium
| | - Alejandro F Frangi
- Christabel Pankhurst Institute, Division of Informatics, Imaging and Data Sciences, Department of Computer Science, University of Manchester, Manchester, UK
- Alan Turing Institute, British Library, London, UK
| | - Andrew Maidment
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Paul E Kinahan
- Departments of Radiology, Bioengineering, and Physics, University of Washington, Seattle, Washington, USA
| | - Hilde Bosmans
- Departments of Radiology and Medical Radiation Physics, KU Leuven, Leuven, Belgium
| | - Ehsan Samei
- Center for Virtual Imaging Trials, Carl E. Ravin Advanced Imaging Laboratories, Departments of Radiology and Electrical & Computer Engineering, Medical Physics Graduate Program, Duke University, Durham, North Carolina, USA
| |
Collapse
|
2
|
Hoang-Dang B, Halavi SE, Rotstein NM, Spivak NM, Dang NH, Cvijanovic L, Hiller SH, Vallejo-Martelo M, Rosenberg BM, Swenson A, Becerra S, Sun M, Revett ME, Kronemyer D, Berlow R, Craske MG, Suthana N, Monti MM, Zbozinek TD, Bookheimer SY, Kuhn TP. Transcranial Focused Ultrasound Targeting the Amygdala May Increase Psychophysiological and Subjective Negative Emotional Reactivity in Healthy Older Adults. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2024; 4:100342. [PMID: 39092138 PMCID: PMC11293512 DOI: 10.1016/j.bpsgos.2024.100342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/22/2024] [Accepted: 05/27/2024] [Indexed: 08/04/2024] Open
Abstract
Background The amygdala is highly implicated in an array of psychiatric disorders but is not accessible using currently available noninvasive neuromodulatory techniques. Low-intensity transcranial focused ultrasound (TFUS) is a neuromodulatory technique that has the capability of reaching subcortical regions noninvasively. Methods We studied healthy older adult participants (N = 21, ages 48-79 years) who received TFUS targeting the right amygdala and left entorhinal cortex (active control region) using a 2-visit within-participant crossover design. Before and after TFUS, behavioral measures were collected via the State-Trait Anxiety Inventory and an emotional reactivity and regulation task utilizing neutral and negatively valenced images from the International Affective Picture System. Heart rate and self-reported emotional valence and arousal were measured during the emotional reactivity and regulation task to investigate subjective and physiological responses to the task. Results Significant increases in both self-reported arousal in response to negative images and heart rate during emotional reactivity and regulation task intertrial intervals were observed when TFUS targeted the amygdala; these changes were not evident when the entorhinal cortex was targeted. No significant changes were found for state anxiety, self-reported valence to the negative images, cardiac response to the negative images, or emotion regulation. Conclusions The results of this study provide preliminary evidence that a single session of TFUS targeting the amygdala may alter psychophysiological and subjective emotional responses, indicating some potential for future neuropsychiatric applications. However, more work on TFUS parameters and targeting optimization is necessary to determine how to elicit changes in a more clinically advantageous way.
Collapse
Affiliation(s)
- Bianca Hoang-Dang
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Sabrina E. Halavi
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Natalie M. Rotstein
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Norman M. Spivak
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
- UCLA David Geffen School of Medicine Medical Scientist Training Program, University of California, Los Angeles, Los Angeles, California
| | - Nolan H. Dang
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Radiology, University of Colorado School of Medicine, Aurora, Colorado
| | - Luka Cvijanovic
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
| | - Sonja H. Hiller
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Mauricio Vallejo-Martelo
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California
| | - Benjamin M. Rosenberg
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Andrew Swenson
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
| | - Sergio Becerra
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Michael Sun
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
- Department of Psychological and Brain Sciences, Dartmouth College, Hanover, New Hampshire
| | - Malina E. Revett
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - David Kronemyer
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Rustin Berlow
- American Brain Stimulation Clinic, Del Mar, California
| | - Michelle G. Craske
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Nanthia Suthana
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Martin M. Monti
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Tomislav D. Zbozinek
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Susan Y. Bookheimer
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| | - Taylor P. Kuhn
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, Los Angeles, California
| |
Collapse
|
3
|
Salahshoor H, Ortiz M. Application of Data-Driven computing to patient-specific prediction of the viscoelastic response of human brain under transcranial ultrasound stimulation. Biomech Model Mechanobiol 2024; 23:1161-1177. [PMID: 38499911 DOI: 10.1007/s10237-024-01830-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 02/09/2024] [Indexed: 03/20/2024]
Abstract
We present a class of model-free Data-Driven solvers that effectively enable the utilization of in situ and in vivo imaging data directly in full-scale calculations of the mechanical response of the human brain to sonic and ultrasonic stimulation, entirely bypassing the need for analytical modeling or regression of the data. The well-posedness of the approach and its convergence with respect to data are proven analytically. We demonstrate the approach, including its ability to make detailed spatially resolved patient-specific predictions of wave patterns, using public-domain MRI images, MRE data and commercially available solid-mechanics software.
Collapse
Affiliation(s)
- Hossein Salahshoor
- Department of Civil and Environmental Engineering, Duke University, Durham, NC, 27708, USA.
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA.
| | - Michael Ortiz
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125, USA
- Hausdorff Center for Mathematics, University of Bonn, Bonn, 53115, Germany
| |
Collapse
|
4
|
Yang Y, Duan H, Zheng Y. Improved Transcranial Plane-Wave Imaging With Learned Speed-of-Sound Maps. IEEE TRANSACTIONS ON MEDICAL IMAGING 2024; 43:2191-2201. [PMID: 38271172 DOI: 10.1109/tmi.2024.3358307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Although transcranial ultrasound plane-wave imaging (PWI) has promising clinical application prospects, studies have shown that variable speed-of-sound (SoS) would seriously damage the quality of ultrasound images. The mismatch between the conventional constant velocity assumption and the actual SoS distribution leads to the general blurring of ultrasound images. The optimization scheme for reconstructing transcranial ultrasound image is often solved using iterative methods like full-waveform inversion. These iterative methods are computationally expensive and based on prior magnetic resonance imaging (MRI) or computed tomography (CT) information. In contrast, the multi-stencils fast marching (MSFM) method can produce accurate time travel maps for the skull with heterogeneous acoustic speed. In this study, we first propose a convolutional neural network (CNN) to predict SoS maps of the skull from PWI channel data. Then, use these maps to correct the travel time to reduce transcranial aberration. To validate the performance of the proposed method, numerical, phantom and intact human skull studies were conducted using a linear array transducer (L11-5v, 128 elements, pitch = 0.3 mm). Numerical simulations demonstrate that for point targets, the lateral resolution of MSFM-restored images increased by 65%, and the center position shift decreased by 89%. For the cyst targets, the eccentricity of the fitting ellipse decreased by 75%, and the center position shift decreased by 58%. In the phantom study, the lateral resolution of MSFM-restored images was increased by 49%, and the position shift was reduced by 1.72 mm. This pipeline, termed AutoSoS, thus shows the potential to correct distortions in real-time transcranial ultrasound imaging, as demonstrated by experiments on the intact human skull.
Collapse
|
5
|
Perolina E, Meissner S, Raos B, Harland B, Thakur S, Svirskis D. Translating ultrasound-mediated drug delivery technologies for CNS applications. Adv Drug Deliv Rev 2024; 208:115274. [PMID: 38452815 DOI: 10.1016/j.addr.2024.115274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/18/2024] [Accepted: 03/01/2024] [Indexed: 03/09/2024]
Abstract
Ultrasound enhances drug delivery into the central nervous system (CNS) by opening barriers between the blood and CNS and by triggering release of drugs from carriers. A key challenge in translating setups from in vitro to in vivo settings is achieving equivalent acoustic energy delivery. Multiple devices have now been demonstrated to focus ultrasound to the brain, with concepts emerging to also target the spinal cord. Clinical trials to date have used ultrasound to facilitate the opening of the blood-brain barrier. While most have focused on feasibility and safety considerations, therapeutic benefits are beginning to emerge. To advance translation of these technologies for CNS applications, researchers should standardise exposure protocol and fine-tune ultrasound parameters. Computational modelling should be increasingly used as a core component to develop both in vitro and in vivo setups for delivering accurate and reproducible ultrasound to the CNS. This field holds promise for transformative advancements in the management and pharmacological treatment of complex and challenging CNS disorders.
Collapse
Affiliation(s)
- Ederlyn Perolina
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand
| | - Svenja Meissner
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand
| | - Brad Raos
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand
| | - Bruce Harland
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand
| | - Sachin Thakur
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand
| | - Darren Svirskis
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Auckland 1023, New Zealand.
| |
Collapse
|
6
|
Angla C, Chouh H, Mondou P, Toullelan G, Perlin K, Brulon V, De Schlichting E, Larrat B, Gennisson JL, Chatillon S. New semi-analytical method for fast transcranial ultrasonic field simulation. Phys Med Biol 2024; 69:095017. [PMID: 38537292 DOI: 10.1088/1361-6560/ad3882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/27/2024] [Indexed: 04/25/2024]
Abstract
Objective.To optimize and ensure the safety of ultrasound brain therapy, personalized transcranial ultrasound simulations are very useful. They allow to predict the pressure field, depending on the patient skull and probe position. Most transcranial ultrasound simulations are based on numerical methods which have a long computation time and a high memory usage. The goal of this study is to develop a new semi-analytical field computation method that combines realism and computation speed.Approach.Instead of the classic ray tracing, the ultrasonic paths are computed by time of flight minimization. Then the pressure field is computed using the pencil method. This method requires a smooth and homogeneous skull model. The simulation algorithm, so-called SplineBeam, was numerically validated, by comparison with existing solvers, and experimentally validated by comparison with hydrophone measured pressure fields through anex vivohuman skull.Main results.SplineBeam simulated pressure fields were close to the experimentally measured ones, with a focus position difference of the order of the positioning error and a maximum pressure difference lower than 6.02%. In addition, for those configurations, SplineBeam computation time was lower than another simulation software, k-Wave's, by two orders of magnitude, thanks to its capacity to compute the field only at the focal spot.Significance.These results show the potential of this new method to compute fast and realistic transcranial pressure fields. The combination of this two assets makes it a promising tool for real time transcranial pressure field prediction during ultrasound brain therapy interventions.
Collapse
Affiliation(s)
- C Angla
- Université Paris-Saclay, CEA List, F-91120, Palaiseau, France
- Université Paris-Saclay, CNRS, Inserm, CEA, BioMaps, F-91190, Orsay, France
| | - H Chouh
- Université Paris-Saclay, CEA List, F-91120, Palaiseau, France
| | - P Mondou
- Université Paris-Saclay, CNRS, CEA, Neurospin F-91191, Gif-sur-Yvette, France
| | - G Toullelan
- Université Paris-Saclay, CEA List, F-91120, Palaiseau, France
| | - K Perlin
- Université Paris-Saclay, CEA List, F-91120, Palaiseau, France
| | - V Brulon
- Université Paris-Saclay, CNRS, Inserm, CEA, BioMaps, F-91190, Orsay, France
| | - E De Schlichting
- CHU Grenoble-Alpes, Service de Neurochirurgie, F-38700, Grenoble, France
| | - B Larrat
- Université Paris-Saclay, CNRS, CEA, Neurospin F-91191, Gif-sur-Yvette, France
| | - J-L Gennisson
- Université Paris-Saclay, CNRS, Inserm, CEA, BioMaps, F-91190, Orsay, France
| | - S Chatillon
- Université Paris-Saclay, CEA List, F-91120, Palaiseau, France
| |
Collapse
|
7
|
Wang L, Li J, Chen S, Fan Z, Zeng Z, Liu Y. Finite difference-embedded UNet for solving transcranial ultrasound frequency-domain wavefield. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2024; 155:2257-2269. [PMID: 38536062 DOI: 10.1121/10.0025391] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/08/2024] [Indexed: 09/20/2024]
Abstract
Transcranial ultrasound imaging assumes a growing significance in the detection and monitoring of intracranial lesions and cerebral blood flow. Accurate solution of partial differential equation (PDE) is one of the prerequisites for obtaining transcranial ultrasound wavefields. Grid-based numerical solvers such as finite difference (FD) and finite element methods have limitations including high computational costs and discretization errors. Purely data-driven methods have relatively high demands on training datasets. The fact that physics-informed neural network can only target the same model limits its application. In addition, compared to time-domain approaches, frequency-domain solutions offer advantages of reducing computational complexity and enabling stable and accurate inversions. Therefore, we introduce a framework called FD-embedded UNet (FEUNet) for solving frequency-domain transcranial ultrasound wavefields. The PDE error is calculated using the optimal 9-point FD operator, and it is integrated with the data-driven error to jointly guide the network iterations. We showcase the effectiveness of this approach through experiments involving idealized skull and brain models. FEUNet demonstrates versatility in handling various input scenarios and excels in enhancing prediction accuracy, especially with limited datasets and noisy information. Finally, we provide an overview of the advantages, limitations, and potential avenues for future research in this study.
Collapse
Affiliation(s)
- Linfeng Wang
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Jian Li
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Shili Chen
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Zheng Fan
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zhoumo Zeng
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Yang Liu
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
- International Institute for Innovative Design and Intelligent Manufacturing of Tianjin University in Zhejiang, Shaoxing 330100, China
| |
Collapse
|
8
|
Shen F, Fan F, Li F, Wang L, Wang R, Wang Y, Liu T, Wei C, Niu H. An efficient method for transcranial ultrasound focus correction based on the coupling of boundary integrals and finite elements. ULTRASONICS 2024; 137:107181. [PMID: 37847943 DOI: 10.1016/j.ultras.2023.107181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/21/2023] [Accepted: 10/08/2023] [Indexed: 10/19/2023]
Abstract
Transcranial focused ultrasound is a novel technique for the noninvasive treatment of brain diseases. The success of the treatment greatly depends on achieving precise and efficient intraoperative focus. However, compensating for aberrated ultrasound waves caused by the skull through numerical simulation-based phase corrections is a challenging task due to the significant computational burden involved in solving the acoustic wave equation. In this article, we propose a promising strategy using the coupling of the boundary integral equation method (BIEM) and the finite element method (FEM) to overcome the above limitation. Specifically, we adopt the BIEM to obtain the Robin-to-Dirichlet maps on the boundaries of the skull and then couple the maps to the FEM matrices via a dual interpolation technique, resulting in a computational domain including only the skull. Three simulation experiments were conducted to evaluate the effectiveness of the proposed method, including a convergence test and two skull-induced aberration corrections in 2D and 3D ultrasound. The results show that the method's convergence is guaranteed as the element size decreases, leading to a decrease in pressure error. The computation times for simulating a 500 kHz ultrasound field on a regular desktop computer were found to be 0.47 ± 0.01 s in the 2D case and 43.72 ± 1.49 s in the 3D case, provided that lower-upper decomposition (approximately 13 s in 2D and 2.5 h in 3D) was implemented in advance. We also demonstrated that more accurate transcranial focusing can be achieved by phase correction compared to the noncorrected results (with errors of 1.02 mm vs. 6.45 mm in 2D and 0.28 mm vs. 3.07 mm in 3D). The proposed strategy is valuable for enabling online ultrasound simulations during treatment, facilitating real-time adjustments and interventions.
Collapse
Affiliation(s)
- Fei Shen
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Fan Fan
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Fengji Li
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Li Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Rui Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yue Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Tao Liu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Cuibai Wei
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing 100050, China
| | - Haijun Niu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
| |
Collapse
|
9
|
Moradi Kashkooli F, Hornsby TK, Kolios MC, Tavakkoli JJ. Ultrasound-mediated nano-sized drug delivery systems for cancer treatment: Multi-scale and multi-physics computational modeling. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2024; 16:e1913. [PMID: 37475577 DOI: 10.1002/wnan.1913] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 05/18/2023] [Accepted: 05/30/2023] [Indexed: 07/22/2023]
Abstract
Computational modeling enables researchers to study and understand various complex biological phenomena in anticancer drug delivery systems (DDSs), especially nano-sized DDSs (NSDDSs). The combination of NSDDSs and therapeutic ultrasound (TUS), that is, focused ultrasound and low-intensity pulsed ultrasound, has made significant progress in recent years, opening many opportunities for cancer treatment. Multiple parameters require tuning and optimization to develop effective DDSs, such as NSDDSs, in which mathematical modeling can prove advantageous. In silico computational modeling of ultrasound-responsive DDS typically involves a complex framework of acoustic interactions, heat transfer, drug release from nanoparticles, fluid flow, mass transport, and pharmacodynamic governing equations. Owing to the rapid development of computational tools, modeling the different phenomena in multi-scale complex problems involved in drug delivery to tumors has become possible. In the present study, we present an in-depth review of recent advances in the mathematical modeling of TUS-mediated DDSs for cancer treatment. A detailed discussion is also provided on applying these computational models to improve the clinical translation for applications in cancer treatment. This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
Collapse
Affiliation(s)
| | - Tyler K Hornsby
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Michael C Kolios
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Jahangir Jahan Tavakkoli
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
| |
Collapse
|
10
|
Sigona MK, Manuel TJ, Anthony Phipps M, Boroujeni KB, Treuting RL, Womelsdorf T, Caskey CF. Generating Patient-Specific Acoustic Simulations for Transcranial Focused Ultrasound Procedures Based on Optical Tracking Information. IEEE OPEN JOURNAL OF ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2023; 3:146-156. [PMID: 38222464 PMCID: PMC10785958 DOI: 10.1109/ojuffc.2023.3318560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Optical tracking is a real-time transducer positioning method for transcranial focused ultrasound (tFUS) procedures, but the predicted focus from optical tracking typically does not incorporate subject-specific skull information. Acoustic simulations can estimate the pressure field when propagating through the cranium but rely on accurately replicating the positioning of the transducer and skull in a simulated space. Here, we develop and characterize the accuracy of a workflow that creates simulation grids based on optical tracking information in a neuronavigated phantom with and without transmission through an ex vivo skull cap. The software pipeline could replicate the geometry of the tFUS procedure within the limits of the optical tracking system (transcranial target registration error (TRE): 3.9 ± 0.7 mm). The simulated focus and the free-field focus predicted by optical tracking had low Euclidean distance errors of 0.5±0.1 and 1.2±0.4 mm for phantom and skull cap, respectively, and some skull-specific effects were captured by the simulation. However, the TRE of simulation informed by optical tracking was 4.6±0.2, which is as large or greater than the focal spot size used by many tFUS systems. By updating the position of the transducer using the original TRE offset, we reduced the simulated TRE to 1.1 ± 0.4 mm. Our study describes a software pipeline for treatment planning, evaluates its accuracy, and demonstrates an approach using MR-acoustic radiation force imaging as a method to improve dosimetry. Overall, our software pipeline helps estimate acoustic exposure, and our study highlights the need for image feedback to increase the accuracy of tFUS dosimetry.
Collapse
Affiliation(s)
- Michelle K Sigona
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
- Vanderbilt University Institute of Imaging Science, Nashville, TN 37232, USA
| | - Thomas J Manuel
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
- Vanderbilt University Institute of Imaging Science, Nashville, TN 37232, USA
| | - M Anthony Phipps
- Vanderbilt University Institute of Imaging Science, Nashville, TN 37232, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37212, USA
| | | | - Robert Louie Treuting
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
| | - Thilo Womelsdorf
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
- Department of Psychology, Vanderbilt University, Nashville, TN 37240, USA
| | - Charles F Caskey
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
- Vanderbilt University Institute of Imaging Science, Nashville, TN 37232, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37212, USA
| |
Collapse
|
11
|
Mondou P, Mériaux S, Nageotte F, Vappou J, Novell A, Larrat B. State of the art on microbubble cavitation monitoring and feedback control for blood-brain-barrier opening using focused ultrasound. Phys Med Biol 2023; 68:18TR03. [PMID: 37369229 DOI: 10.1088/1361-6560/ace23e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 06/27/2023] [Indexed: 06/29/2023]
Abstract
Focused ultrasound (FUS) is a non-invasive and highly promising method for targeted and reversible blood-brain barrier permeabilization. Numerous preclinical studies aim to optimize the localized delivery of drugs using this method in rodents and non-human primates. Several clinical trials have been initiated to treat various brain diseases in humans using simultaneous BBB permeabilization and drug injection. This review presents the state of the art ofin vitroandin vivocavitation control algorithms for BBB permeabilization using microbubbles (MB) and FUS. Firstly, we describe the different cavitation states, their physical significance in terms of MB behavior and their translation into the spectral composition of the backscattered signal. Next, we report the different indexes calculated and used during the ultrasonic monitoring of cavitation. Finally, the differentin vitroandin vivocavitation control strategies described in the literature are presented and compared.
Collapse
Affiliation(s)
- Paul Mondou
- Université de Strasbourg, CNRS, ICube, UMR7357, Strasbourg, France
- Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, 91191, Gif-sur-Yvette, France
| | - Sébastien Mériaux
- Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, 91191, Gif-sur-Yvette, France
| | - Florent Nageotte
- Université de Strasbourg, CNRS, ICube, UMR7357, Strasbourg, France
| | - Jonathan Vappou
- Université de Strasbourg, CNRS, ICube, UMR7357, Strasbourg, France
| | - Anthony Novell
- Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, 91191, Gif-sur-Yvette, France
- Université Paris-Saclay, CEA, CNRS, Inserm, BioMaps, SHFJ, 91401 , Orsay, France
| | - Benoit Larrat
- Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, 91191, Gif-sur-Yvette, France
| |
Collapse
|
12
|
Fan B, Goodman W, Cho RY, Sheth SA, Bouchard RR, Aazhang B. Computational modeling and minimization of unintended neuronal excitation in a LIFU stimulation. Sci Rep 2023; 13:13403. [PMID: 37591991 PMCID: PMC10435497 DOI: 10.1038/s41598-023-40522-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023] Open
Abstract
The neuromodulation effect of low-intensity focused ultrasound (LIFU) is highly target-specific. Unintended off-target neuronal excitation can be elicited when the beam focusing accuracy and resolution are limited, whereas the resulted side effect has not been evaluated quantitatively. There is also a lack of methods addressing the minimization of such side effects. Therefore, this work introduces a computational model of unintended neuronal excitation during LIFU neuromodulation, which evaluates the off-target activation area (OTAA) by integrating an ultrasound field model with the neuronal spiking model. In addition, a phased array beam focusing scheme called constrained optimal resolution beamforming (CORB) is proposed to minimize the off-target neuronal excitation area while ensuring effective stimulation in the target brain region. A lower bound of the OTAA is analytically approximated in a simplified homogeneous medium, which could guide the selection of transducer parameters such as aperture size and operating frequency. Simulations in a human head model using three transducer setups show that CORB markedly reduces the OTAA compared with two benchmark beam focusing methods. The high neuromodulation resolution demonstrates the capability of LIFU to effectively limit the side effects during neuromodulation, allowing future clinical applications such as treatment of neuropsychiatric disorders.
Collapse
Affiliation(s)
- Boqiang Fan
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, 77005, USA.
| | - Wayne Goodman
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, 77005, USA
- Department of Psychiatry and Behavioral Science, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Raymond Y Cho
- Department of Psychiatry and Behavioral Science, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sameer A Sheth
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, 77005, USA
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Richard R Bouchard
- Department of Imaging Physics, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Behnaam Aazhang
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, 77005, USA
| |
Collapse
|
13
|
Zhou C, Xu K, Ta D. Frequency-domain full-waveform inversion-based musculoskeletal ultrasound computed tomography. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2023; 154:279-294. [PMID: 37449785 DOI: 10.1121/10.0020151] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
Recently, full-waveform inversion (FWI) has become a promising tool for ultrasound computed tomography (USCT). However, as a computationally intensive technique, FWI suffers from computational burden, especially in conventional time-domain full-waveform inversion (TDFWI). On the contrary, frequency-domain full-waveform inversion (FDFWI) provides a relatively high computational efficiency as the propagation of discrete frequencies is much cheaper than full time-domain modeling. FDFWI has already been applied in soft tissue imaging, such as breast, but for the musculoskeletal model with high impedance contrast between hard and soft tissues, there is still a lack of an effective source estimation method. In this paper, a water-referenced data calibration method is proposed to address the source estimation challenge in the presence of bones, which achieves consistency between the measured and simulated data before the FDFWI procedure. To avoid the cycle-skipping local minimum effect and facilitate the algorithm convergence, a starting frequency criterion for musculoskeletal FDFWI is further proposed. The feasibility of the proposed method is demonstrated by numerical studies on retrieving the anatomies of the leg models and different musculoskeletal lesions. The study extends the advanced FDFWI method to the musculoskeletal system and provides an alternative solution for musculoskeletal USCT imaging with high computational efficiency.
Collapse
Affiliation(s)
- Chenchen Zhou
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, China
| | - Kailiang Xu
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, China
| | - Dean Ta
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, China
| |
Collapse
|