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Devarakonda SB, Myers MR, Banerjee RK. Comparison of Heat Transfer Enhancement Between Magnetic and Gold Nanoparticles During HIFU Sonication. J Biomech Eng 2019; 140:2681004. [PMID: 30003252 DOI: 10.1115/1.4040120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Indexed: 12/16/2022]
Abstract
Long procedure times and collateral damage remain challenges in high-intensity focused ultrasound (HIFU) medical procedures. Magnetic nanoparticles (mNPs) and gold nanoparticles (gNPs) have the potential to reduce the acoustic intensity and/or exposure time required in these procedures. In this research, we investigated relative advantages of using gNPs and mNPs during HIFU thermal-ablation procedures. Tissue-mimicking phantoms containing embedded thermocouples (TCs) and physiologically acceptable concentrations (0.0625% and 0.125%) of gNPs were sonicated at acoustic powers of 5.2 W, 9.2 W, and 14.5 W, for 30 s. It was observed that when the concentration of gNPs was doubled from 0.0625% to 0.125%, the temperature rise increased by 80% for a power of 5.2 W. For a fixed concentration (0.0625%), the energy absorption was 1.7 times greater for mNPs than gNPs for a power of 5.2 W. Also, for the power of 14.5 W, the sonication time required to generate a lesion volume of 50 mm3 decreased by 1.4 times using mNPs, compared with gNPs, at a concentration of 0.0625%. We conclude that mNPs are more likely than gNPs to produce a thermal enhancement in HIFU ablation procedures.
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Affiliation(s)
- Surendra B Devarakonda
- Department of Mechanical, Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221
| | - Matthew R Myers
- Division of Applied Mechanics, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD 20993
| | - Rupak K Banerjee
- Fellow ASME Department of Mechanical, Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, 593 Rhodes Hall, ML 0072, Cincinnati, OH 45221 e-mail:
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Simoni V, Cafarelli A, Tognarelli S, Menciassi A. Ex Vivo Assessment of Multiple Parameters in High Intensity Focused Ultrasound. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:5705-5708. [PMID: 30441631 DOI: 10.1109/embc.2018.8513583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
High Intensity Focused Ultrasound (HIFU) is a very promising technology for a non-invasive treatment of several pathologies, especially in oncology. However, optimizing the stimulation parameters for better tuning the induced lethal effects (thermal and/or mechanical) in the targeted area is not trivial and it has not been achieved yet. The aim of this study is to present the results of a combined analysis of temperature, acoustic cavitation and lesion geometry induced in ex vivo tissues during HIFU procedures by varying power, sonication time and duty cycle. Temperature rise was analyzed using a thin wire thermocouple embedded in the sonicated tissue; stable and inertial cavitation were measured using a passive cavitation detector (PCD), and lesion volume was assessed using both ultrasound imaging and optical visualization. The obtained results may represent an important guideline for clinical treatments, providing useful nformation for better tuning HIFU operational parameters to induce a desired type of ablation (i.e. thermal, mechanical or a combination of both).
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Walden C, Soneson J, Weber MJ, Charthad J, Chia Chang T, Arbabian A, Myers M. Thermal analysis of ultrasound-powered miniaturized implants: A tissue-phantom study. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2018; 143:3373. [PMID: 29960486 DOI: 10.1121/1.5040470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Neurological implants that harvest ultrasound power have the potential to provide long-term stimulation without complications associated with battery power. An important safety question associated with long-term operation of the implant involves the heat generated by the interaction of the device with the ultrasound field. A study was performed in which the temperature rise generated by this interaction was measured. Informed by temperature data from thermocouples outside the ultrasound beam, a mathematical inverse method was used to determine the volume heat source generated by ultrasound absorption within the implant as well as the surface heat source generated within the viscous boundary layer on the surface of the implant. For the test implant used, it was determined that most of the heat was generated in the boundary layer, giving a maximum temperature rise ∼5 times that for absorption in an equivalent volume of soft tissue. This result illustrates that thermal safety guidelines based solely on ultrasound absorption of tissue alone are not sufficient. The method presented represents an alternative approach for quantifying ultrasound thermal effects in the presence of implants. The analysis shows a steady temperature rise of about 0.2 °C for every 100 mW/cm2 for the presented test implant.
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Affiliation(s)
- Candace Walden
- Electrical and Computer Engineering, University of Maryland, 8228 Paint Branch Drive, College Park, Maryland 20742, USA
| | - Joshua Soneson
- Division of Applied Mechanics, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
| | - Marcus J Weber
- Department of Electrical Engineering, Stanford University, 420 Via Palou, Stanford, California 94305-4070, USA
| | - Jayant Charthad
- Department of Electrical Engineering, Stanford University, 420 Via Palou, Stanford, California 94305-4070, USA
| | - Ting Chia Chang
- Department of Electrical Engineering, Stanford University, 420 Via Palou, Stanford, California 94305-4070, USA
| | - Amin Arbabian
- Department of Electrical Engineering, Stanford University, 420 Via Palou, Stanford, California 94305-4070, USA
| | - Matthew Myers
- Division of Applied Mechanics, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
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Bera C, Devarakonda SB, Kumar V, Ganguli AK, Banerjee RK. The mechanism of nanoparticle-mediated enhanced energy transfer during high-intensity focused ultrasound sonication. Phys Chem Chem Phys 2018; 19:19075-19082. [PMID: 28702635 DOI: 10.1039/c7cp03542j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this combined experimental and theoretical research, magnetic nano-particle (mNP) mediated energy transfer due to high intensity-focused ultrasound (HIFU) sonication has been evaluated. HIFU sonications have been performed on phantoms containing three different volume percentages (0%, 0.0047%, and 0.047%) of mNPs embedded in a tissue mimicking material (TMM). A theoretical model has been developed to calculate the temperature rise in the phantoms during HIFU sonication. It is observed from theoretical calculation that the phonon layer at the interface of the mNPs and TMM dominates the attenuation for higher (0.047%) concentration. However, for a lower concentration (0.0047%) of mNPs, intrinsic absorption is the dominating mechanism. Attenuation due to the viscous drag becomes the dominating mechanism for larger size mNPs (>1000 nm). At a higher concentration (0.047%), it is observed from theoretical calculations that the temperature rise is 25% less for gold nano-particles (gNPs) when compared to mNPs. However, at lower concentrations (0.0047% and 0.002%), the difference in temperature rise for the mNPs and gNPs is less than 2%.
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Affiliation(s)
- Chandan Bera
- Institute of Nano Science and Technology, Mohali, Punjab 160062, India
| | - Surendra B Devarakonda
- Mechanical and Materials Engineering Department, University of Cincinnati, Cincinnati, OH, USA
| | - Vishal Kumar
- Institute of Nano Science and Technology, Mohali, Punjab 160062, India
| | - Ashok K Ganguli
- Institute of Nano Science and Technology, Mohali, Punjab 160062, India and Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India
| | - Rupak K Banerjee
- Mechanical and Materials Engineering Department, University of Cincinnati, Cincinnati, OH, USA
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Devarakonda SB, Myers MR, Lanier M, Dumoulin C, Banerjee RK. Assessment of Gold Nanoparticle-Mediated-Enhanced Hyperthermia Using MR-Guided High-Intensity Focused Ultrasound Ablation Procedure. NANO LETTERS 2017; 17:2532-2538. [PMID: 28287747 DOI: 10.1021/acs.nanolett.7b00272] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
High-intensity focused ultrasound (HIFU) has gained increasing popularity as a noninvasive therapeutic procedure to treat solid tumors. However, collateral damage due to the use of high acoustic powers during HIFU procedures remains a challenge. The objective of this study is to assess the utility of using gold nanoparticles (gNPs) during HIFU procedures to locally enhance heating at low powers, thereby reducing the likelihood of collateral damage. Phantoms containing tissue-mimicking material (TMM) and physiologically relevant concentrations (0%, 0.0625%, and 0.125%) of gNPs were fabricated. Sonications at acoustic powers of 10, 15, and 20 W were performed for a duration of 16 s using an MR-HIFU system. Temperature rises and lesion volumes were calculated and compared for phantoms with and without gNPs. For an acoustic power of 10 W, the maximum temperature rise increased by 32% and 43% for gNPs concentrations of 0.0625% and 0.125%, respectively, when compared to the 0% gNPs concentration. For the power of 15 W, a lesion volume of 0, 44.5 ± 7, and 63.4 ± 32 mm3 was calculated for the gNPs concentration of 0%, 0.0625%, and 0.125%, respectively. For a power of 20 W, it was found that the lesion volume doubled and tripled for concentrations of 0.0625% and 0.125% gNPs, respectively, when compared to the concentration of 0% gNPs. We conclude that gNPs have the potential to locally enhance the heating and reduce damage to healthy tissue during tumor ablation using HIFU.
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Affiliation(s)
- Surendra B Devarakonda
- Department of Mechanical, Materials Engineering College of Engineering and Applied Science, University of Cincinnati , Cincinnati, Ohio 45221, United States
| | - Matthew R Myers
- Division of Solid and Fluid Mechanics Center for Devices and Radiological Health, U.S. Food and Drug Administration , Silver Spring, Maryland 20993, United States
| | - Mathew Lanier
- Department of Radiology, Cincinnati Children's Hospital Medical Center , Cincinnati, Ohio 45221, United States
| | - Charles Dumoulin
- Department of Radiology, Cincinnati Children's Hospital Medical Center , Cincinnati, Ohio 45221, United States
| | - Rupak K Banerjee
- Department of Mechanical, Materials Engineering College of Engineering and Applied Science, University of Cincinnati , Cincinnati, Ohio 45221, United States
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Enhanced thermal effect using magnetic nano-particles during high-intensity focused ultrasound. PLoS One 2017; 12:e0175093. [PMID: 28384646 PMCID: PMC5383424 DOI: 10.1371/journal.pone.0175093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 03/20/2017] [Indexed: 01/20/2023] Open
Abstract
Collateral damage and long sonication times occurring during high-intensity focused ultrasound (HIFU) ablation procedures limit clinical advancement. In this reserarch, we investigated whether the use of magnetic nano-particles (mNPs) can reduce the power required to ablate tissue or, for the same power, reduce the duration of the procedure. Tissue-mimicking phantoms containing embedded thermocouples and physiologically acceptable concentrations (0%, 0.0047%, and 0.047%) of mNPs were sonicated at acoustic powers of 5.2 W, 9.2 W, and 14.5 W, for 30 seconds. Lesion volumes were determined for the phantoms with and without mNPs. It was found that with the 0.047% mNP concentration, the power required to obtain a lesion volume of 13 mm3 can be halved, and the time required to achieve a 21 mm3 lesion decreased by a factor of 5. We conclude that mNPs have the potential to reduce damage to healthy tissue, and reduce the procedure time, during tumor ablation using HIFU.
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Devarakonda S, Ahmad Reza Dibaji S, Hariharan P, Myers MR, Banerjee RK. Characterization of Focal Location During High-Intensity Focused Ultrasound Ablation in a Tissue Phantom Using Remote Thermocouple Arrays1. J Med Device 2016. [DOI: 10.1115/1.4033243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Surendra Devarakonda
- Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221
| | - Seyed Ahmad Reza Dibaji
- Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221
| | - Prasanna Hariharan
- Division of Solid and Fluid Mechanics, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD 20993
| | - Matthew R. Myers
- Division of Solid and Fluid Mechanics, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD 20993
| | - Rupak K. Banerjee
- Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221
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Dibaji SAR, Banerjee RK, Liu Y, Soneson JE, Myers MR. Experimental validation of a nonlinear derating technique based upon Gaussian-modal representation of focused ultrasound beams. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2016; 139:2624. [PMID: 27250156 DOI: 10.1121/1.4948607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A technique useful for performing derating at acoustic powers where significant harmonic generation occurs is illustrated and validated with experimental measurements. The technique was previously presented using data from simulations. The method is based upon a Gaussian representation of the propagation modes, resulting in simple expressions for the modal quantities, but a Gaussian source is not required. The nonlinear interaction of modes within tissue is estimated from the nonlinear interaction in water, using appropriate amounts of source reduction and focal-point reduction derived from numerical simulations. An important feature of this nonlinear derating method is that focal temperatures can be estimated with little additional effort beyond that required to determine the focal pressure waveforms. Hydrophone measurements made in water were used to inform the derating algorithm, and the resulting pressure waveforms and increases in temperature were compared with values directly measured in tissue phantoms. For a 1.05 MHz focused transducer operated at 80 W and 128 W, the derated pressures (peak positive, peak negative) agreed with the directly measured values to within 11%. Focal temperature rises determined by the derating method agreed with values measured using a remote thermocouple technique with a difference of 17%.
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Affiliation(s)
- Seyed Ahmad Reza Dibaji
- Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, 2600 Clifton Avenue, Cincinnati, Ohio 45221, USA
| | - Rupak K Banerjee
- Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, 2600 Clifton Avenue, Cincinnati, Ohio 45221, USA
| | - Yunbo Liu
- Division of Applied Mechanics, Center for Devices and Radiological Health, United States Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
| | - Joshua E Soneson
- Division of Applied Mechanics, Center for Devices and Radiological Health, United States Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
| | - Matthew R Myers
- Division of Applied Mechanics, Center for Devices and Radiological Health, United States Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
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