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Lu SS, Yang LL, Yang W, Wang J, Zhang XL, Yang L, Wen Y. Complications and adverse events of high-intensity focused ultrasound in its application to gynecological field - a systematic review and meta-analysis. Int J Hyperthermia 2024; 41:2370969. [PMID: 38945548 DOI: 10.1080/02656736.2024.2370969] [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: 01/09/2024] [Accepted: 06/17/2024] [Indexed: 07/02/2024] Open
Abstract
OBJECTIVE To analyze and summarize the types, incidence rates and relevant influencing factors of adverse events (AEs) after high-intensity focused ultrasound ablation of gynecological diseases and provide reference and basis for handling such events in clinical practice. METHOD We searched PubMed, Cochrane Library, Web of Science and Embase databases to retrieve all literature since its establishment until February 2024. We evaluated the quality of included literature and publication bias and conducted a meta-analysis of single group rates for various AEs using Stata 17.0. RESULTS This systematic review finally included 41 articles. We summarized 34 kinds of AEs in 7 aspects and conducted a single group rate meta-analysis and sub-group analysis of 16 kinds of AEs. Among the common AEs of High-Intensity Focused Ultrasound (HIFU), the incidence of lower abdominal pain/pelvic pain is 36.1% (95% CI: 24.3%∼48.8%), vaginal bleeding is 20.6% (95% CI: 13.9%∼28.0%), vaginal discharge is 14.0% (95% CI: 9.6%∼19.1%), myoma discharge is 24% (95% CI: 14.6%∼34.8%), buttock pain is 10.8% (95% CI: 6.0%∼16.5%) and sacral pain is 10% (95% CI: 8.8%∼11.2%). Serious complications include uterine rupture, necrotic tissue obstruction requiring surgical intervention, third degree skin burns and persistent lower limb pain or movement disorders. CONCLUSION The common AEs after HIFU surgery are mostly mild and controllable, and the incidence of serious complications is extremely low. By reasonable prevention and active intervention, these events can be further reduced, making it a safe and effective treatment method. It is a good choice for patients who crave noninvasive treatment or have other surgical contraindications.
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Affiliation(s)
- Shan-Shan Lu
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Lei-Lei Yang
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Wei Yang
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Jing Wang
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Xia-Lin Zhang
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Liu Yang
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yi Wen
- Gynecology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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Marinova M, Khouri DA, Küppers J, Ramig O, Strunk HM, Breuers J, Fazaal J, Fuhrmann C, Coenen M, Möhring C, Zhou T, Zhou X, Anhalt T, Sadeghlar F, Thudium M, Conrad R, Feldmann G, Brossart P, Glowka TR, Kalff JC, Essler M, Strassburg CP, Ko YD, Schmidt-Wolf IGH, Gonzalez-Carmona M. Study Protocol of a Randomized, Two-Arm, Phase I/II Trial Investigating the Feasibility, Safety, and Efficacy of Local Treatment with US-Guided High-Intensity Focused Ultrasound in Combination with Palliative Chemotherapy in Inoperable Pancreatic Cancer. J Clin Med 2024; 13:3717. [PMID: 38999283 PMCID: PMC11242276 DOI: 10.3390/jcm13133717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Pancreatic adenocarcinoma (PaC) still has a dismal prognosis, and despite medical advances, a bleak 5-year survival rate of only 8%, largely due to late diagnosis and limited curative surgical options for most patients. Frontline palliative treatment shows some survival advantages. However, the high disease mortality is accompanied by high morbidity including cancer-related pain and additional symptoms, which strongly impair patients' quality of life (QOL). At present, there is no established strategy for local therapy for PaC primarily aiming to manage local tumor growth and alleviate associated symptoms, particularly pain. In recent years, non-invasive high-intensity focused ultrasound (HIFU) has shown promising results in reducing cancer pain and tumor mass, improving patients' QOL with few side effects. STUDY DESIGN This is the first randomized controlled trial worldwide including 40 patients with inoperable pancreatic adenocarcinoma randomized into two groups: group A undergoing standard chemotherapy; and group B undergoing standard chemotherapy plus local HIFU treatment. This study aims to establish a robust evidence base by examining the feasibility, safety, and efficacy of US-guided HIFU in combination with standard palliative systemic therapy for unresectable PaC. Primary endpoint assessments will focus on parameters including safety issues (phase I), and local response rates (phase II).
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Affiliation(s)
- Milka Marinova
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | - David-Alexis Khouri
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | - Jim Küppers
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | - Olga Ramig
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Johannes Breuers
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | - Julia Fazaal
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | - Christine Fuhrmann
- D Clinical Study Core Unit Bonn, Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127 Bonn, Germany
| | - Martin Coenen
- D Clinical Study Core Unit Bonn, Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127 Bonn, Germany
| | - Christian Möhring
- Department of Internal Medicine I, University Hospital Bonn, 53127 Bonn, Germany
| | - Taotao Zhou
- Department of Internal Medicine I, University Hospital Bonn, 53127 Bonn, Germany
| | - Xin Zhou
- Department of Internal Medicine I, University Hospital Bonn, 53127 Bonn, Germany
| | - Thomas Anhalt
- Department of Internal Medicine I, University Hospital Bonn, 53127 Bonn, Germany
| | - Farsaneh Sadeghlar
- Department of Internal Medicine I, University Hospital Bonn, 53127 Bonn, Germany
| | - Marcus Thudium
- Department of Anesthesiology, University Hospital Bonn, 53127 Bonn, Germany
| | - Rupert Conrad
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Muenster, 48149 Muenster, Germany
| | - Georg Feldmann
- Department of Internal Medicine III, University Hospital Bonn, 53127 Bonn, Germany
| | - Peter Brossart
- Department of Internal Medicine III, University Hospital Bonn, 53127 Bonn, Germany
| | - Tim R. Glowka
- Department of Surgery, University Hospital Bonn, 53127 Bonn, Germany
| | - Jörg C. Kalff
- Department of Surgery, University Hospital Bonn, 53127 Bonn, Germany
| | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Yon-Dschun Ko
- Oncological Center, Johanniter Hospital, 53113 Bonn, Germany
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Keum H, Cevik E, Kim J, Demirlenk YM, Atar D, Saini G, Sheth RA, Deipolyi AR, Oklu R. Tissue Ablation: Applications and Perspectives. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2310856. [PMID: 38771628 DOI: 10.1002/adma.202310856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/05/2024] [Indexed: 05/22/2024]
Abstract
Tissue ablation techniques have emerged as a critical component of modern medical practice and biomedical research, offering versatile solutions for treating various diseases and disorders. Percutaneous ablation is minimally invasive and offers numerous advantages over traditional surgery, such as shorter recovery times, reduced hospital stays, and decreased healthcare costs. Intra-procedural imaging during ablation also allows precise visualization of the treated tissue while minimizing injury to the surrounding normal tissues, reducing the risk of complications. Here, the mechanisms of tissue ablation and innovative energy delivery systems are explored, highlighting recent advancements that have reshaped the landscape of clinical practice. Current clinical challenges related to tissue ablation are also discussed, underlining unmet clinical needs for more advanced material-based approaches to improve the delivery of energy and pharmacology-based therapeutics.
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Affiliation(s)
- Hyeongseop Keum
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Enes Cevik
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Jinjoo Kim
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Yusuf M Demirlenk
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Dila Atar
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Gia Saini
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Rahul A Sheth
- Department of Interventional Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Amy R Deipolyi
- Interventional Radiology, Department of Surgery, West Virginia University, Charleston Area Medical Center, Charleston, WV, 25304, USA
| | - Rahmi Oklu
- Laboratory for Patient Inspired Engineering, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA
- Division of Vascular & Interventional Radiology, Mayo Clinic, 5777 E Mayo Blvd, Phoenix, AZ, 85054, USA
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Del Campo Fonseca A, Ahmed D. Ultrasound robotics for precision therapy. Adv Drug Deliv Rev 2024; 205:115164. [PMID: 38145721 DOI: 10.1016/j.addr.2023.115164] [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: 09/30/2023] [Revised: 12/07/2023] [Accepted: 12/22/2023] [Indexed: 12/27/2023]
Abstract
In recent years, the application of microrobots in precision therapy has gained significant attention. The small size and maneuverability of these micromachines enable them to potentially access regions that are difficult to reach using traditional methods; thus, reducing off-target toxicities and maximizing treatment effectiveness. Specifically, acoustic actuation has emerged as a promising method to exert control. By harnessing the power of acoustic energy, these small machines potentially navigate the body, assemble at the desired sites, and deliver therapies with enhanced precision and effectiveness. Amidst the enthusiasm surrounding these miniature agents, their translation to clinical environments has proven difficult. The primary objectives of this review are threefold: firstly, to offer an overview of the fundamental acoustic principles employed in the field of microrobots; secondly, to assess their current applications in medical therapies, encompassing tissue targeting, drug delivery or even cell infiltration; and lastly, to delve into the continuous efforts aimed at integrating acoustic microrobots into in vivo applications.
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Affiliation(s)
- Alexia Del Campo Fonseca
- Department of Mechanical and Process Engineering, Acoustic Robotics Systems Lab, ETH Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland.
| | - Daniel Ahmed
- Department of Mechanical and Process Engineering, Acoustic Robotics Systems Lab, ETH Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland.
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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.
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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
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6
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Zhou K, Strunk H, Dimitrov D, Vidal-Jove J, Gonzalez-Carmona MA, Essler M, Jin C, Mei Z, Zhu H, Marinova M. US-guided high-intensity focused ultrasound in pancreatic cancer treatment: a consensus initiative between Chinese and European HIFU centers. Int J Hyperthermia 2023; 41:2295812. [PMID: 38159562 DOI: 10.1080/02656736.2023.2295812] [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: 11/01/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024] Open
Abstract
Purpose: Ultrasound-guided high-intensity focused ultrasound (USgHIFU) represents a safe and effective non-invasive thermoablative technique for managing inoperable pancreatic cancer. This treatment method significantly alleviates disease-related symptoms and reduces pancreatic tumor volume. However, the current body of evidence is constrained by a lack of randomized controlled trials. The utilization of USgHIFU is primarily indicated for patients with unresectable, locally advanced, or metastatic pancreatic cancer, particularly those experiencing symptoms due to a locally advanced primary tumor.Methods: This collaborative consensus paper, involving European and Chinese HIFU centers treating pancreatic cancer, delineates criteria for patient selection, focusing on those most likely to benefit from USgHIFU treatment. Consideration is given to endpoints encompassing symptom alleviation, local response rates, other oncological outcomes, as well as overall and progression-free survival. Additionally, this paper defines relevant contraindications, side effects, and complications associated with USgHIFU. The publication also explores the feasibility and role of USgHIFU within the context of palliative care, including standard systemic chemotherapy.Results: The non-invasive local treatment of advanced pancreatic cancer using HIFU should be regarded as an adjunctive option alongside systemic chemotherapy or best supportive care for managing this aggressive disease. Based on the ability of USgHIFU therapy to mitigate pain and reduce primary tumor volume, it should be considered as a complementary therapy for symptomatic patients with inoperable pancreatic cancer and as a potential means of tumor debulking. The underutilized yet promising USgHIFU exhibits the potential to enhance patients' quality of life by alleviating cancer-related pain. Experts in the field should evaluate this treatment option be evaluated by experts in this field, with this consensus paper potentially serving as a guiding resource for the medical community.Conclusions: US-guided HIFU for advanced pancreatic cancer addresses treatment goals, available options, success rates, and limitations. As a non-invasive, effective local therapy, complementary to chemotherapy and best supportive care, it plays a pivotal role in pain relief, reducing of tumor volume, and potentially improving survival rates.
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Affiliation(s)
- Kun Zhou
- Clinical Center for Tumor Therapy, 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | | | - Dobromir Dimitrov
- Department of Surgical Propedeutics, HIFU Center University Hospital St. Marina, Medical University Peleven, Pleven, Bulgaria
| | - Joan Vidal-Jove
- Institute Khuab, Comprehensive Tumor Center Barcelona, Barcelona, Spain
| | | | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, Germany
| | - Chengbin Jin
- Clinical Center for Tumor Therapy, 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Zhechuan Mei
- Department of Gastroenterology and Hepatology, 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Hui Zhu
- Clinical Center for Tumor Therapy, 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Milka Marinova
- Department of Nuclear Medicine, University Hospital Bonn, Germany
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7
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Coppola A, Grasso D, Fontana F, Piacentino F, Minici R, Laganà D, Ierardi AM, Carrafiello G, D’Angelo F, Carcano G, Venturini M. Innovative Experimental Ultrasound and US-Related Techniques Using the Murine Model in Pancreatic Ductal Adenocarcinoma: A Systematic Review. J Clin Med 2023; 12:7677. [PMID: 38137745 PMCID: PMC10743777 DOI: 10.3390/jcm12247677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/24/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a cancer with one of the highest mortality rates in the world. Several studies have been conductedusing preclinical experiments in mice to find new therapeutic strategies. Experimental ultrasound, in expert hands, is a safe, multifaceted, and relatively not-expensive device that helps researchers in several ways. In this systematic review, we propose a summary of the applications of ultrasonography in a preclinical mouse model of PDAC. Eighty-eight studies met our inclusion criteria. The included studies could be divided into seven main topics: ultrasound in pancreatic cancer diagnosis and progression (n: 21); dynamic contrast-enhanced ultrasound (DCE-US) (n: 5); microbubble ultra-sound-mediated drug delivery; focused ultrasound (n: 23); sonodynamic therapy (SDT) (n: 7); harmonic motion elastography (HME) and shear wave elastography (SWE) (n: 6); ultrasound-guided procedures (n: 9). In six cases, the articles fit into two or more sections. In conclusion, ultrasound can be a really useful, eclectic, and ductile tool in different diagnostic areas, not only regarding diagnosis but also in therapy, pharmacological and interventional treatment, and follow-up. All these multiple possibilities of use certainly represent a good starting point for the effective and wide use of murine ultrasonography in the study and comprehensive evaluation of pancreatic cancer.
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Affiliation(s)
- Andrea Coppola
- Diagnostic and Interventional Radiology Unit, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy (M.V.)
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
| | - Dario Grasso
- Diagnostic and Interventional Radiology Unit, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy (M.V.)
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
| | - Federico Fontana
- Diagnostic and Interventional Radiology Unit, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy (M.V.)
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
| | - Filippo Piacentino
- Diagnostic and Interventional Radiology Unit, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy (M.V.)
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
| | - Roberto Minici
- Radiology Unit, Dulbecco University Hospital, 88100 Catanzaro, Italy; (R.M.)
| | - Domenico Laganà
- Radiology Unit, Dulbecco University Hospital, 88100 Catanzaro, Italy; (R.M.)
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy
| | - Anna Maria Ierardi
- Radiology Unit, IRCCS Ca Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | | | - Fabio D’Angelo
- Department of Medicine and Surgery, Insubria University, 21100 Varese, Italy;
- Orthopedic Surgery Unit, ASST Sette Laghi, 21100 Varese, Italy
| | - Giulio Carcano
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
- Emergency and Transplant Surgery Department, ASST Sette Laghi, 21100 Varese, Italy
| | - Massimo Venturini
- Diagnostic and Interventional Radiology Unit, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy (M.V.)
- Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy
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8
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Shi R, Lv R, Dong Z, Cao Q, Wu R, Liu S, Ren Y, Liu Z, van der Mei HC, Liu J, Busscher HJ. Magnetically-targetable outer-membrane vesicles for sonodynamic eradication of antibiotic-tolerant bacteria in bacterial meningitis. Biomaterials 2023; 302:122320. [PMID: 37738742 DOI: 10.1016/j.biomaterials.2023.122320] [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: 07/10/2023] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 09/24/2023]
Abstract
Treatment of acute bacterial meningitis is difficult due to the impermeability of the blood-brain barrier, greatly limiting the antibiotic concentrations that can be achieved in the brain. Escherichia coli grown in presence of iron-oxide magnetic nanoparticles secrete large amounts of magnetic outer-membrane vesicles (OMVs) in order to remove excess Fe from their cytoplasm. OMVs are fully biomimetic nanocarriers, but can be inflammatory. Here, non-inflammatory magnetic OMVs were prepared from an E. coli strain in which the synthesis of inflammatory lipid A acyltransferase was inhibited using CRISPR/Cas9 mediated gene knockout. OMVs were loaded with ceftriaxone (CRO) and meso-tetra-(4-carboxyphenyl)porphine (TCPP) and magnetically driven across the blood-brain barrier for sonodynamic treatment of bacterial meningitis. ROS-generation upon ultrasound application of CRO- and TCPP-loaded OMVs yielded similar ROS-generation as by TCPP in solution. In vitro, ROS-generation by CRO- and TCPP-loaded OMVs upon ultrasound application operated synergistically with CRO to kill a hard-to-kill, CRO-tolerant E. coli strain. In a mouse model of CRO-tolerant E. coli meningitis, CRO- and TCPP-loaded OMVs improved survival rates and clinical behavioral scores of infected mice after magnetic targeting and ultrasound application. Recurrence did not occur for at least two weeks after arresting treatment.
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Affiliation(s)
- Rui Shi
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
| | - Rui Lv
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China
| | - Ziliang Dong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China; Science and Technology Innovation Center, Shandong First Medical University, Jinan, 250000, Shandong, PR China
| | - Qinghua Cao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China
| | - Renfei Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
| | - Sidi Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
| | - Yijin Ren
- University of Groningen and University Medical Center of Groningen, Department of Orthodontics, Hanzeplein 1, 9700 RB, Groningen, the Netherlands
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands.
| | - Jian Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou, 215123, Jiangsu, PR China.
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
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9
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Kim Y, Yu H, An S, Ha D, Jung B. Handheld microfocused ultrasound device for facial lifting: A preliminary study of ULTIGHT. J Cosmet Dermatol 2023; 22:2982-2988. [PMID: 37183576 DOI: 10.1111/jocd.15813] [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: 01/15/2023] [Revised: 04/11/2023] [Accepted: 05/02/2023] [Indexed: 05/16/2023]
Abstract
OBJECTIVE Although focused ultrasound modalities have achieved positive clinical results in noninvasive skin rejuvenation, they presented various side effects and particularly severe pain during treatment. This study introduces a microfocused ultrasound (MFU) device, ULTIGHT, to overcome the severe pain issue, providing quasi-facial lifting. MATERIALS AND METHODS Transducer surface was imaged with a scanning electron microscope. The energies of four treatment cartridges were measured using an ultrasound power meter. In vitro experiments were performed to quantitatively evaluate the MFU thermal zones (MFUTZs) and treatment line (TL) of 10 MFUTZs. Ex vivo experiments were performed to evaluate the MFUTZs and temperature rise in tissue. Clinical trials using eight volunteers were performed to qualitatively evaluate facial lifting. RESULTS The MFU transducer clearly showed a smooth and no air gap surface. ULTIGHT produced 10 discrete MFUTZs in a TL of length 10 mm. In ex vivo tissue, discrete linear MFUTZs were clearly observed at lower number of TLs; however, they started to aggregate at higher number of TLs. The temperature rise was linearly increased as a function of the number of treatments. A single MFUTZ resulted in a temperature rise of 3°C-10°C that could cause hyperthermia for body temperature. In the clinical trials, the volunteers showed quasi-facial lifting right after treatment on the lower facial region. CONCLUSIONS ULTIGHT provides relatively low energy, which may be advantageous or disadvantageous depending on clinical applications. Additionally, it has the advantage of being pain-free even without anesthetic during treatment, providing quasi-facial lifting right after treatment.
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Affiliation(s)
- Yongheon Kim
- Department of Biomedical Engineering, Yonsei University, Wonju-si, Korea
| | - Hyunseon Yu
- Department of Biomedical Engineering, Yonsei University, Wonju-si, Korea
| | | | | | - Byungjo Jung
- Department of Biomedical Engineering, Yonsei University, Wonju-si, Korea
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10
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Filippou A, Georgiou A, Nikolaou A, Evripidou N, Damianou C. Advanced software for MRgFUS treatment planning. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2023; 240:107726. [PMID: 37480647 DOI: 10.1016/j.cmpb.2023.107726] [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: 02/12/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND AND OBJECTIVES Herein, a user-friendly software platform for 3-dimensional Focused Ultrasound treatment planning based on Magnetic Resonance Imaging (MRI) images is presented. METHODS The software directly retrieves and loads MRI images. Various design tools can be used on the MRI images to define the treatment area and the sonication parameters. Based on the treatment plan, the software controls the robotic motion and motion pattern of Magnetic Resonance guided Focused Ultrasound (MRgFUS) robotic systems to execute the treatment procedure. Real-time treatment monitoring is achieved through MRI images and thermometry. The software's functionality and performance were evaluated in both laboratory and MRI environments. Different treatment plans were designed on MRI images and sonications were executed on agar-based phantoms and polymer films. RESULTS Magnetic Resonance (MR) thermometry maps were acquired in the agar-based phantoms. An exceptional agreement was observed between the software-planned treatment area and the lesions produced on the polymer films. CONCLUSIONS The developed software was successfully integrated with the MRI and robotic system controls for performing accurate treatment planning and real-time monitoring during sonications. The software provides an extremely user-friendly interface, while in the future it could be enhanced by providing dynamic modulation of the ultrasonic parameters during the treatment process.
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Affiliation(s)
- Antria Filippou
- Cyprus University of Technology, Department of Electrical Engineering, Computer Engineering, and Informatics, 30 Archbishop Kyprianou Str., Limassol 3036, Cyprus.
| | - Andreas Georgiou
- Cyprus University of Technology, Department of Electrical Engineering, Computer Engineering, and Informatics, 30 Archbishop Kyprianou Str., Limassol 3036, Cyprus
| | - Anastasia Nikolaou
- Cyprus University of Technology, Department of Electrical Engineering, Computer Engineering, and Informatics, 30 Archbishop Kyprianou Str., Limassol 3036, Cyprus.
| | - Nikolas Evripidou
- Cyprus University of Technology, Department of Electrical Engineering, Computer Engineering, and Informatics, 30 Archbishop Kyprianou Str., Limassol 3036, Cyprus.
| | - Christakis Damianou
- Cyprus University of Technology, Department of Electrical Engineering, Computer Engineering, and Informatics, 30 Archbishop Kyprianou Str., Limassol 3036, Cyprus.
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11
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Sadeghi-Goughari M, Rajabzadeh H, Han JW, Kwon HJ. Artificial intelligence-assisted ultrasound-guided focused ultrasound therapy: a feasibility study. Int J Hyperthermia 2023; 40:2260127. [PMID: 37748776 DOI: 10.1080/02656736.2023.2260127] [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: 06/26/2023] [Accepted: 09/12/2023] [Indexed: 09/27/2023] Open
Abstract
OBJECTIVES Focused ultrasound (FUS) therapy has emerged as a promising noninvasive solution for tumor ablation. Accurate monitoring and guidance of ultrasound energy is crucial for effective FUS treatment. Although ultrasound (US) imaging is a well-suited modality for FUS monitoring, US-guided FUS (USgFUS) faces challenges in achieving precise monitoring, leading to unpredictable ablation shapes and a lack of quantitative monitoring. The demand for precise FUS monitoring heightens when complete tumor ablation involves controlling multiple sonication procedures. METHODS To address these challenges, we propose an artificial intelligence (AI)-assisted USgFUS framework, incorporating an AI segmentation model with B-mode ultrasound imaging. This method labels the ablated regions distinguished by the hyperechogenicity effect, potentially bolstering FUS guidance. We evaluated our proposed method using the Swin-Unet AI architecture, conducting experiments with a USgFUS setup on chicken breast tissue. RESULTS Our results showed a 93% accuracy in identifying ablated areas marked by the hyperechogenicity effect in B-mode imaging. CONCLUSION Our findings suggest that AI-assisted ultrasound monitoring can significantly improve the precision and control of FUS treatments, suggesting a crucial advancement toward the development of more effective FUS treatment strategies.
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Affiliation(s)
- Moslem Sadeghi-Goughari
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Hossein Rajabzadeh
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Jeong-Woo Han
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Hyock-Ju Kwon
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
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12
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deSouza NM, Gedroyc W, Rivens I, ter Haar G. Tissue specific considerations in implementing high intensity focussed ultrasound under magnetic resonance imaging guidance. Front Oncol 2022; 12:1037959. [PMID: 36387108 PMCID: PMC9663991 DOI: 10.3389/fonc.2022.1037959] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/17/2022] [Indexed: 11/29/2022] Open
Abstract
High-intensity focused ultrasound can ablate a target permanently, leaving tissues through which it passes thermally unaffected. When delivered under magnetic resonance (MR) imaging guidance, the change in tissue relaxivity on heating is used to monitor the temperatures achieved. Different tissue types in the pre-focal beam path result in energy loss defined by their individual attenuation coefficients. Furthermore, at interfaces with different acoustic impedances the beam will be both reflected and refracted, changing the position of the focus. For complex interfaces this effect is exacerbated. Moreover, blood vessels proximal to the focal region can dissipate heat, altering the expected region of damage. In the target volume, the temperature distribution depends on the thermal conductivity (or diffusivity) of the tissue and its heat capacity. These are different for vascular tissues, water and fat containing tissues and bone. Therefore, documenting the characteristics of the pre-focal and target tissues is critical for effective delivery of HIFU. MR imaging provides excellent anatomic detail and characterization of soft tissue components. It is an ideal modality for real-time planning and monitoring of HIFU ablation, and provides non-invasive temperature maps. Clinical applications involve soft-tissue (abdomino-pelvic applications) or bone (brain applications) pre-focally and at the target (soft-tissue tumors and bone metastases respectively). This article addresses the technical difficulties of delivering HIFU effectively when vascular tissues, densely cellular tissues, fat or bone are traversed pre-focally, and the clinical applications that target these tissues. The strengths and limitations of MR techniques used for monitoring ablation in these tissues are also discussed.
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Affiliation(s)
- Nandita M. deSouza
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, United Kingdom
| | - Wladyslaw Gedroyc
- Faculty of Medicine, St. Mary’s Hospital, Imperial College, London, United Kingdom
| | - Ian Rivens
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, United Kingdom
| | - Gail ter Haar
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, United Kingdom
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13
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Lee TJ, Kim D, Kim T, Pak CJ, Suh HP, Hong JP. Rejuvenation of photoaged aged mouse skin using high intensity focused ultrasound. J Plast Reconstr Aesthet Surg 2022; 75:3859-3868. [DOI: 10.1016/j.bjps.2022.06.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022]
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14
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de Los Ríos Cardenas L, Bermeo Varon LA, de Albuquerque Pereira WC. Parameter estimation in high-intensity focused ultrasound therapy. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2022; 38:e3591. [PMID: 35289112 DOI: 10.1002/cnm.3591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/03/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Hyperthermia using High-Intensity Focused Ultrasound (HIFU) is an acoustic therapy for cancer treatment. This technique consists of an increase in the temperature field of the tumor to achieve coagulative necrosis and immediate cell death. Therefore, for having a successful treatment, the physical problem requires to know several properties due to the high variability from individual to individual, or even for the same individual under different physiological conditions. This article presents a numerical simulation of hyperthermia therapy for cancer treatment using HIFU, as well as the estimation of parameters that influence the physical problem. Two mathematical models were considered to solve the forward problem. The acoustic model based on acoustic pressure performs a frequency-domain study, and the bioheat transfer model a time-dependent study. These models were solved using Comsol Multiphysics® software in a 2D-axisymmetric rectangular domain to determine the temperature field. Parameter estimation was coded in Matlab Mathworks® environment using a Bayesian approach. The Markov Chain Monte Carlo method by the Metropolis-Hastings algorithm was implemented, and the simulated temperature measurements were considered. Results suggest that specific HIFU therapy can be performed for each patient by estimating appropriate parameters for cancer treatment and provides the possibility to define procedures before and during the treatment.
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15
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Kwizera EA, Stewart S, Mahmud MM, He X. Magnetic Nanoparticle-Mediated Heating for Biomedical Applications. JOURNAL OF HEAT TRANSFER 2022; 144:030801. [PMID: 35125512 PMCID: PMC8813031 DOI: 10.1115/1.4053007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/03/2021] [Indexed: 05/17/2023]
Abstract
Magnetic nanoparticles, especially superparamagnetic nanoparticles (SPIONs), have attracted tremendous attention for various biomedical applications. Facile synthesis and functionalization together with easy control of the size and shape of SPIONS to customize their unique properties, have made it possible to develop different types of SPIONs tailored for diverse functions/applications. More recently, considerable attention has been paid to the thermal effect of SPIONs for the treatment of diseases like cancer and for nanowarming of cryopreserved/banked cells, tissues, and organs. In this mini-review, recent advances on the magnetic heating effect of SPIONs for magnetothermal therapy and enhancement of cryopreservation of cells, tissues, and organs, are discussed, together with the non-magnetic heating effect (i.e., high Intensity focused ultrasound or HIFU-activated heating) of SPIONs for cancer therapy. Furthermore, challenges facing the use of magnetic nanoparticles in these biomedical applications are presented.
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Affiliation(s)
- Elyahb Allie Kwizera
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742
| | - Samantha Stewart
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742
| | - Md Musavvir Mahmud
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742
| | - Xiaoming He
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD 21201
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16
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Raghuram H, Keunen B, Soucier N, Looi T, Pichardo S, Waspe AC, Drake JM. A robotic magnetic resonance-guided high-intensity focused ultrasound platform for neonatal neurosurgery: Assessment of targeting accuracy and precision in a brain phantom. Med Phys 2022; 49:2120-2135. [PMID: 35174892 DOI: 10.1002/mp.15540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Intraventricular Hemorrhage (IVH) is one of the most serious neurovascular complications resulting from premature birth. It can result in clotting of blood within the ventricles, which causes a buildup of cerebrospinal fluid that can lead to posthemorrhagic ventricular dilation and posthemorrhagic hydrocephalus. Currently, there are no direct treatments for these blood clots as the standard of care is invasive surgery to insert a shunt. Magnetic resonance-guided high-intensity focused ultrasound (MRgHIFU) has been investigated as a non-invasive treatment to lyse blood clots. However, current MRgHIFU systems are not suitable in the context of treating IVH in neonates. PURPOSE We have developed a robotic MRgHIFU neurosurgical platform designed to treat the neonatal brain. This platform facilitates ergonomic patient positioning and directs treatment through their open anterior fontanelle while providing a larger treatment volume. The platform is based on an MR-compatible robot developed by our group. Further development of the platform has warranted investigation of its targeting ability to assess its feasibility in the neonatal brain. This study aimed to quantify the platform's targeting accuracy, precision, and repeatability using a brain phantom and clinical MRI system. METHODS A thermosensitive brain-mimicking phantom was developed to test the platform's targeting accuracy. Rectangular grid patterns were created with HIFU thermal energy "lesions" in the phantoms by targeting specific coordinate points. The intended target locations were demarcated by inserting carbon fibre rods through a targeting assessment template. Coordinates for the intended and actual targets were derived from T2-weighted MRI scans and the centroid distance between them was measured. Subsequently, the platform's targeting accuracy was quantified according to equations derived from ISO Standard 9283:1998. RESULTS HIFU ablation resulted in distinct thermal lesions within the thermosensitive phantoms, which appeared as discrete hypointense regions in T2-weighted MR scans. A total of 127 target points were included in the data analysis, which yielded a targeting accuracy of 0.6mm and targeting precision of 1.2mm. CONCLUSIONS The robotic MRgHIFU platform was shown to have a high degree of accuracy, precision, and repeatability. The results demonstrate the platform's functionality when targeting through simulated brain matter. These results serve as an initial verification of the platform targeting ability and showed promise towards the final application in a neonatal brain. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hrishikesh Raghuram
- Posluns Centre for Image Guided Innovation and Therapeutic Intervention, Hospital for Sick Children, Toronto, Ontario, M5G 1 × 8, Canada.,The Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, M5G 3G9, Canada
| | - Benjamin Keunen
- The Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, M5G 3G9, Canada
| | - Nathan Soucier
- Posluns Centre for Image Guided Innovation and Therapeutic Intervention, Hospital for Sick Children, Toronto, Ontario, M5G 1 × 8, Canada.,The Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, M5G 3G9, Canada
| | - Thomas Looi
- Posluns Centre for Image Guided Innovation and Therapeutic Intervention, Hospital for Sick Children, Toronto, Ontario, M5G 1 × 8, Canada.,Department of Medical Imaging, University of Toronto, Toronto, Ontario, M5T 1W7, Canada
| | - Samuel Pichardo
- Radiology and Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Adam C Waspe
- Posluns Centre for Image Guided Innovation and Therapeutic Intervention, Hospital for Sick Children, Toronto, Ontario, M5G 1 × 8, Canada.,Department of Medical Imaging, University of Toronto, Toronto, Ontario, M5T 1W7, Canada
| | - James M Drake
- Posluns Centre for Image Guided Innovation and Therapeutic Intervention, Hospital for Sick Children, Toronto, Ontario, M5G 1 × 8, Canada.,The Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, M5G 3G9, Canada.,Department of Neurosurgery, University of Toronto, Toronto, Ontario, M5S 1A1, Canada
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17
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Yan L, Huang H, Lin J, Yu R. High-intensity focused ultrasound treatment for symptomatic uterine fibroids: a systematic review and meta-analysis. Int J Hyperthermia 2022; 39:230-238. [PMID: 35094613 DOI: 10.1080/02656736.2022.2029956] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Ling Yan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, Xiamen, PR China
| | - Huimin Huang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, Xiamen, PR China
| | - Jingwen Lin
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, Xiamen, PR China
| | - Ruimei Yu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, Xiamen, PR China
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18
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Recker F, Thudium M, Strunk H, Tonguc T, Dohmen S, Luechters G, Bette B, Welz S, Salam B, Wilhelm K, Egger EK, Wüllner U, Attenberger U, Mustea A, Conrad R, Marinova M. Multidisciplinary management to optimize outcome of ultrasound-guided high-intensity focused ultrasound (HIFU) in patients with uterine fibroids. Sci Rep 2021; 11:22768. [PMID: 34815488 PMCID: PMC8611035 DOI: 10.1038/s41598-021-02217-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 11/08/2021] [Indexed: 12/22/2022] Open
Abstract
Little is known about the specific anaesthesiological and multidisciplinary management of high-intensity focused ultrasound (HIFU) in uterine fibroids. This observational single-center study is the first reporting on an interdisciplinary approach to optimize outcome following ultrasound (US)-guided HIFU in German-speaking countries. A sample of forty patients with symptomatic uterine fibroids was treated by HIFU. Relevant treatment parameters such as total treatment time for intervention, anaesthesia, and sonication time as well as total energy, body temperature, peri-interventional medication and complications were analyzed. Interventional variables did not correlate significantly either with opioid dose or with body temperature. The average fibroid volume reduction rate was 37.8% ± 23.5%, 48.5% ± 22.0% and 70.2% ± 25.5% after 3, 6 and 12 months, respectively. No major anaesthesiological complications occurred apart from an epileptic seizure prior to HIFU treatment in one patient. Peri-procedural hyperthermia (> 37.5 °C) occurred in two patients. Post-procedural two patients experienced a sciatic nerve irritation up to one year; one patient with very large treated fibroid experienced strong short-lasting post-procedural pain. There were two complication-free pregnancies of HIFU-treated patients. Multidisciplinary management is crucial to optimize safety and outcome of US-guided HIFU for uterine fibroids. Peri-procedural pain and temperature management are critical points where an adequate collaboration between anesthesiologist and interventionalist is mandatory.
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Affiliation(s)
- Florian Recker
- Department of Gynaecology and Gynaecological Oncology, University Hospital Bonn, Bonn, Germany
| | - Marcus Thudium
- Department of Anaesthesiology, University Hospital Bonn, Bonn, Germany
| | - Holger Strunk
- Department of Radiology, Städtisches Klinikum Solingen, Solingen, Germany
| | - Tolga Tonguc
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Sara Dohmen
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Guido Luechters
- Center for Development Research (ZEF), University Bonn, Bonn, Germany
| | - Birgit Bette
- Department of Anaesthesiology, University Hospital Bonn, Bonn, Germany
| | - Simone Welz
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Babak Salam
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Kai Wilhelm
- Department of Radiology, Johanniter Krankenhaus Bonn, Bonn, Germany
| | - Eva K Egger
- Department of Gynaecology and Gynaecological Oncology, University Hospital Bonn, Bonn, Germany
| | - Ullrich Wüllner
- Department of Neurology, University Hospital Bonn, Bonn, Germany
| | - Ulrike Attenberger
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Alexander Mustea
- Department of Gynaecology and Gynaecological Oncology, University Hospital Bonn, Bonn, Germany
| | - Rupert Conrad
- Clinic and Polyclinic for Psychosomatic Medicine and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Milka Marinova
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany. .,Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany.
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19
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Maestroni U, Tafuri A, Dinale F, Campobasso D, Antonelli A, Ziglioli F. Oncologic outcome of salvage high-intensity focused ultrasound (HIFU) in radiorecurrent prostate cancer. A systematic review. ACTA BIO-MEDICA : ATENEI PARMENSIS 2021; 92:e2021191. [PMID: 34487074 DOI: 10.23750/abm.v92i3.11475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 01/08/2023]
Abstract
INTRODUCTION External Beam Radiation Therapy (EBRT) is one of the option available for the treatment of clinically localized prostate cancer. In patients with radiorecurrent localized prostate cancer, Androgen Deprivation Therapy (ADT) is one of the most common therapeutic strategies. However, in the last decades, other salvage treatment options have been investigated, such as brachytherapy, cryoablation and High Intensity Focused Ultrasound (Hifu). MATERIAL AND METHODS The oncologic outcome of Hifu in a salvage setting after EBRT failure was investigated. We reviewed the literature from 2005 to 2020 in order to report the oncologic outcome of the technique. RESULTS A total of 1241 patients were analyzed, with a mean age of 68.6 years and a PSA value of 5.87 ng/mL before treatment. Mean follow-up was 24.3 months after treatment, ranging from 3 to 168 months. CONCLUSION Our review of the literature revealed that salvage Hifu is effective in the treatment of radiorecurrent clinically localized prostate cancer, with an overall survival of 85.2% at 5 years.
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20
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Han X, Huang R, Meng T, Yin H, Song D. The Roles of Magnetic Resonance-Guided Focused Ultrasound in Pain Relief in Patients With Bone Metastases: A Systemic Review and Meta-Analysis. Front Oncol 2021; 11:617295. [PMID: 34458131 PMCID: PMC8387143 DOI: 10.3389/fonc.2021.617295] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 07/19/2021] [Indexed: 01/06/2023] Open
Abstract
Objective Cancer pain, the most common skeleton-related event of bone metastases, significantly disturbs patients' life. MRI-guided focused ultrasound (MRgFUS) is a therapeutic option to relieve pain; however, its efficacy and safety have not been fully explored. Therefore, we aim to conduct a meta-analysis on studies reporting MRgFUS for patients with bone metastases. Methods Randomized controlled trials (RCT) and non-RCTs on MRgFUS treatment for patients with bone metastases were collected using PubMed, MEDLINE In-Process (US National Library of Medicine), National Institutes of Health (US National Library of Medicine), Embase (Elsevier), Web of Science, CINAHL, and the Cochrane Library between August 2007 and September 2019. Data on quantitative pain assessment before/after MRgFUS, response rate, and complication were extracted and analyzed. Results Fifteen eligible studies with 362 patients were selected in this meta-analysis. The average pain score was 6.74 (95% CI: 6.30-7.18) at baseline, 4.15 (95% CI: 3.31-4.99) at 0-1 week, 3.09 (95% CI: 2.46-3.72) at 1-5 weeks, and 2.28 (95% CI: 1.37-3.19) at 5-14 weeks. Compared with baseline, the pain improvement at 0-1 week was 2.54 (95% CI: 1.92-3.16, p < 0.01), at 1-5 weeks was 3.56 (95% CI: 3.11-4.02, p < 0.01), and at 5-14 weeks was 4.22 (95% CI: 3.68-4.76, p < 0.01). Change from baseline in OMEDD at 2 weeks after treatment was -15.11 (95% CI: -34.73, 4.50), at 1 month after treatment was -10.87 (95% CI: -26.32, 4.58), and at 3 months after treatment was -5.53 (95% CI: -20.44, 9.38). The overall CR rate was 0.36 (95% CI: 0.24-0.48), PR rate was 0.47 (95% CI: 0.36-0.58), and NR rate was 0.23 (95% CI: 0.13-0.34). Among 14 studies including 352 patients, 93 (26.4%) patients with minor complications and 5 (1.42%) patients with major complications were recorded. Conclusion This meta-analysis identifies MRgFUS as a reliable therapeutic option to relieve cancer pain for patients with metastatic bone tumors with controllable related complications.
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Affiliation(s)
- Xiaying Han
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Runzhi Huang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Division of Spine, Department of Orthopedics, Tongji Hospital affiliated to Tongji University School of Medicine, Shanghai, China.,Tongji University School of Medicine, Shanghai, China
| | - Tong Meng
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Huabin Yin
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dianwen Song
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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21
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Marinova M, Ghaei S, Recker F, Tonguc T, Kaverina O, Savchenko O, Kravchenko D, Thudium M, Pieper CC, Egger EK, Mustea A, Attenberger U, Conrad R, Hadizadeh DR, Strunk H. Efficacy of ultrasound-guided high-intensity focused ultrasound (USgHIFU) for uterine fibroids: an observational single-center study. Int J Hyperthermia 2021; 38:30-38. [PMID: 34420447 DOI: 10.1080/02656736.2021.1939444] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
INTRODUCTION To evaluate treatment response of uterine fibroids after ultrasound guided high-intensity focused ultrasound (USgHIFU) with a special focus on fibroid size and characterization based on Funaki classification scheme, as well as clinical response to treatment of leading fibroid-associated symptoms. MATERIALS AND METHODS Uterine fibroids treated by USgHIFU were assigned to Funaki type 1-3 based on T2-w-MRI. Differences in size, non-perfused volume ratio (NPVR) and volume reduction over time were determined using T1-/T2-w MRI sequences and contrast-enhanced sonography. Treatment effects on three leading fibroid-associated symptoms were also evaluated. Measurements were compared by mixed model, Bland-Altman's plot and Spearman's correlation. RESULTS In this prospective single-center study, 35 patients with 44 symptomatic uterine fibroids were treated by USgHIFU (n = 22, n = 12 and n = 10 assigned to Funaki type 1, 2 and 3, respectively). NPVRs of Funaki type 1 and 2 fibroids were significantly higher compared to type 3 (p = .0023). A significant fibroid shrinkage was observed independent of Funaki type compared to baseline: 38.8 ± 26.9%, 46.7 ± 30.3% and 54.5 ± 29.3% at 3, 6 and 12 months, respectively (each p < .05). Moreover, patients experienced a significant improvement of fibroid-associated hypermenorrhea (3.9 ± 1.3 vs. 2.3 ± 1.3), pressure in the pelvic area (3.5 ± 1.3 vs. 2.1 ± 0.9) and frequent urination (2.8 ± 1.5 vs. 1.9 ± 0.8) one year post-procedure (each p < .05), regardless of fibroid Funaki type. CONCLUSION Following USgHIFU, a significant shrinkage of uterine fibroids and improvement of leading fibroid-associated symptoms were demonstrated regardless of the Funaki type.
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Affiliation(s)
- Milka Marinova
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Shiwa Ghaei
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Florian Recker
- Clinic of Gynaecology and Gynaecological Oncology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Tolga Tonguc
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Olga Kaverina
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Oleksandr Savchenko
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Dmitrij Kravchenko
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Marcus Thudium
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Claus C Pieper
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Eva K Egger
- Clinic of Gynaecology and Gynaecological Oncology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Alexander Mustea
- Clinic of Gynaecology and Gynaecological Oncology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Ulrike Attenberger
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Rupert Conrad
- Clinic and Polyclinic for Psychosomatic Medicine and Psychotherapy, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Dariusch R Hadizadeh
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
| | - Holger Strunk
- Clinic for Diagnostic and Interventional Radiology, University Hospital Bonn, University Bonn, Bonn, Germany
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High-Intensity Focused Ultrasound: A Review of Mechanisms and Clinical Applications. Ann Biomed Eng 2021; 49:1975-1991. [PMID: 34374945 DOI: 10.1007/s10439-021-02833-9] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/08/2021] [Indexed: 01/20/2023]
Abstract
High Intensity Focused Ultrasound (HIFU) is an emerging and increasingly useful modality in the treatment of cancer and other diseases. Although traditional use of ultrasound at lower frequencies has primarily been for diagnostic imaging purposes, the development of HIFU has allowed this particular modality to expand into therapeutic use. This non-invasive and acoustic method involves the use of a piezoelectric transducer to deliver high-energy pulses in a spatially coordinated manner, while minimizing damage to tissue outside the target area. This review describes the history of the development of diagnostic and therapeutic ultrasound and explores the biomedical applications utilizing HIFU technology including thermally ablative treatment, therapeutic delivery mechanisms, and neuromodulatory phenomena. The application of HIFU across various tumor types in multiple organ systems is explored in depth, with particular attention to successful models of HIFU in the treatment of various medical conditions. Basic mechanisms, preclinical models, previous clinical use, and ongoing clinical trials are comparatively discussed. Recent advances in HIFU across multiple medical fields reveal the growing importance of this biomedical technology for the care of patients and for the development of possible pathways for the future use of HIFU as a commonplace treatment modality.
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Omura M, Takeuchi M, Nagaoka R, Hasegawa H. A study on understanding the physical mechanism of change in ultrasonic envelope statistical property during temperature elevation. Med Phys 2021; 48:3042-3054. [PMID: 33880793 DOI: 10.1002/mp.14890] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/02/2021] [Accepted: 04/04/2021] [Indexed: 01/16/2023] Open
Abstract
PURPOSE Our previous studies demonstrate that the variation in ultrasonic envelope statistics is correlated with the temperature change inside scattering media. This variation is identified as the change in the scatterer structure during thermal expansion or contraction. However, no specific evidence has been verified to date. This study numerically reproduces the change in the scatterer distribution during thermal expansion or contraction using finite element simulations and also investigates how the situation is altered by different material properties. METHODS The material properties of a linear elastic solid depend on the thermal expansion coefficient, thermal conductivity, specific heat, and initial scatterer number density. Three-dimensional displacements, calculated in the simulation, were sequentially used to update the positions of the randomly distributed scatterers. Ultrasound signals from the scatterer distribution were generated by simulating a 7.5-MHz linear array transducer whose specifications were the same as those in the experimental measurements of several phantoms and excised porcine livers. To represent the change in the envelope statistical feature, the absolute value of the ratio change in the logarithmic Nakagami (NA) parameter, Δ m , at each time was calculated as a value normalized with the initial NA parameter. RESULTS The change in the scatterer number density relates to the volume change during temperature elevation. The magnitude of the Δ m shift against the temperature change increases depending on the higher thermal expansion coefficient. In contrast, the relationship between Δ m and the scatterer number density is similar with any material property. Additionally, the changes in Δ m obtained by several experimental phantoms with low to high scatterer number densities are comparable with the numerical simulation results. CONCLUSIONS The change in Δ m is indirectly related to the change in the scatterer number density owing to the volume change during thermal expansion or contraction.
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Affiliation(s)
- Masaaki Omura
- Faculty of Engineering, Academic Assembly, University of Toyama, Gofuku 3190, Toyama, 9308555, Japan
| | | | - Ryo Nagaoka
- Faculty of Engineering, Academic Assembly, University of Toyama, Gofuku 3190, Toyama, 9308555, Japan
| | - Hideyuki Hasegawa
- Faculty of Engineering, Academic Assembly, University of Toyama, Gofuku 3190, Toyama, 9308555, Japan
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Kim JK, Cho SW, Kim H, Jo SC, Kim HG, Won TB, Kim JW, Lim JH, Rhee CS. Development of HIGH-INTENSITY FOCUSED ULTRASOUND(HIFU) Therapy in Inferior Turbinate Hypertrophy. Clin Exp Otorhinolaryngol 2021; 15:160-167. [PMID: 33781059 PMCID: PMC9149228 DOI: 10.21053/ceo.2020.02383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/09/2021] [Indexed: 11/25/2022] Open
Abstract
Objectives Inferior turbinate (IT) hypertrophy is the main cause of chronic nasal obstruction. We developed a high-intensity focused ultrasound (HIFU) ablation device to treat patients with IT hypertrophy. Methods First, computed tomography images of patients with no evidence of sinonasal disease were evaluated to measure and compare the IT, medial mucosal thickness (MT), and space between the nasal septum and IT according to clinical characteristics such as septal deviation. A HIFU prototype was developed based on the above human anatomical studies. The experimental study was performed in five pigs; the nasal volume and histological changes at 1 and 4 weeks postoperatively were evaluated to compare the efficacy of HIFU turbinoplasty with that of radiofrequency turbinoplasty and a control group. Results The mean medial MT of the anterior, middle, and posterior portions of the IT were 4.66±1.14, 4.23±0.97, and 6.17±1.29 mm, respectively. The mean medial space was 2.65±0.79 mm. The diameter and focal depth of the prototype were 4 mm and 3 mm, respectively. HIFU showed no postoperative complications, including bleeding or scar formation. After HIFU treatment, the nasal volume increased by 196.62 mm3 (7.8%) and 193.74 mm3 (8.3%) at 1 week and 4 weeks, compared with the increase of 87.20 mm3 (3.1%) and 213.81 mm3 (9.0%), respectively,after radiofrequency therapy. A qualitative histological analysis after radiofrequency turbinoplasty showed epithelial layer disruption at 1 week and increased fibrosis, along with decreased glandular structure, at 4 weeks. The HIFU group had an intact epithelial layer at 1 week postoperatively. However, significant differences were observed at 4 weeks, including increased fibrosis and decreased glandular structure. Conclusion The efficacy and safety of HIFU turbinoplasty were demonstrated in an animal study. Our results warrant further human clinical trials.
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Affiliation(s)
- Joon Kon Kim
- Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sung-Woo Cho
- Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyojin Kim
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Korea
| | | | - Hyung Gu Kim
- Department of Otorhinolaryngology- Head and Neck Surgery, Hanyang National University Guri Hospital, Guri, Korea
| | - Tae-Bin Won
- Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jeong-Whun Kim
- Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jae Hyun Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, National Police Hospital, Seoul, Korea
| | - Chae-Seo Rhee
- Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Otorhinolaryngology- Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea
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Abd Elazeem HAS, Saad MM, Ahmed IA, Sayed EG, AlMahdy AM, Atef F, Elassall GM, Ashraf Salah M, Ali AK, Ragab EY, Shazly SA. High-intensity focused ultrasound in management of placenta accreta spectrum: A systematic review. Int J Gynaecol Obstet 2020; 151:325-332. [PMID: 32976627 DOI: 10.1002/ijgo.13391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/07/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND High-intensity focused ultrasound (HIFU) is a non-invasive procedure that has been studied in the management of placenta accreta spectrum (PAS). OBJECTIVE To appraise HIFU in the management of PAS and highlight the restrictions on converting uterus-preserving studies into evidence-based practice. SEARCH STRATEGY A search on Scopus, Cochrane, PubMed and Web of Science was conducted from date of inception to January 2020. SELECTION CRITERIA Studies on using HIFU in the management of PAS were eligible. Review articles, conference papers, and case reports were excluded. DATA COLLECTION A standardized sheet was used to abstract data from eligible studies. CON-PAS registry was used to include studies on other conservative modalities. RESULTS Four studies were eligible (399 patients). Average residual placental volume was 61.74 cm3 (6.01-339 cm3 ). Treatment was successful in all patients. Normal menstruation recovered after 48.8 days (15-150 days). No major complications were encountered. Sixty-one studies were retrieved from the CON-PAS registry; uterine artery embolization (23 studies), balloon placement (15 studies), compression sutures (10 studies), placenta in situ (7 studies), and uterine resection (6 studies) were successful in 83.7%, 92.9%, 87.9%, 85.2%, and 79.3% of cases, respectively. CONCLUSIONS HIFU may fit certain clinical situations in the management of PAS. A global research strategy is recommended to incorporate conservative approaches within a comprehensive management protocol.
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Affiliation(s)
| | - Mahmoud M Saad
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Islam A Ahmed
- Department of Internal Medicine, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esraa G Sayed
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - AlBatool M AlMahdy
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Fatma Atef
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Gena M Elassall
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohamed Ashraf Salah
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed K Ali
- Department of Surgery, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esraa Y Ragab
- Department of Anesthesia, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Sherif A Shazly
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Ziglioli F, Baciarello M, Maspero G, Bellini V, Bocchialini T, Cavalieri D, Bignami EG, Maestroni U. Oncologic outcome, side effects and comorbidity of high-intensity focused ultrasound (HIFU) for localized prostate cancer. A review. Ann Med Surg (Lond) 2020; 56:110-115. [PMID: 32637083 PMCID: PMC7327297 DOI: 10.1016/j.amsu.2020.05.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 05/14/2020] [Accepted: 05/19/2020] [Indexed: 12/25/2022] Open
Abstract
Introduction Prostate cancer is considered one of the most important health problems. Due to the increased number of diagnosed patients and the inability to distinguish aggressive tumors, minimally-invasive procedures have become increasingly interesting. High-intensity focused ultrasound (HIFU) is an alternative option to radical surgery to treat prostate cancer. To date, however, data on side effects and comorbidities of this technique are still not conclusive. Methods and results We reviewed the literature to concentrate on side effects and comorbidities of HIFU treatment of prostate cancer with the following key words: hifu, high intensity focused ultrasound, ultrasonic therapy, transrectal hifu, prostate ablation, side effects, comorbidities. MedLine and Embase via Ovid database were searched. Selection criteria were: English language, articles published between 2001 and 2015, case series including at least 100 participants and reported data on side effects and comorbidities. Sixteen uncontrolled studies were identified. No randomized controlled trials (RCT) were found in the literature comparing side effects and comorbidities of HIFU to other routine approaches to prostate cancer treatment. Conclusion HIFU seems to be a promising minimally-invasive treatment for low- and intermediate-risk prostate cancer, especially for patients who are unfit for radical surgery. Prospective studies with longer follow-up periods and RCT are required to properly assess the impact of side effects and comobidities related to the HIFU technique in comparison with other therapies to treat prostate cancer. HIFU is a promising minimally-invasive treatment for prostate cancer, especially in patients with low- and intermediate-risk disease. To date, the most proper indication to HIFU is for patients who are not fit for, or are unwilling to undergo, radical surgery. The most common complications are impotence, urinary incontinence, acute urinary retention and urethral fistula. High-intensity focused ultrasound is a safe and effective procedure.
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Affiliation(s)
- Francesco Ziglioli
- Department of Urology, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Marco Baciarello
- Anesthesia, Intensive Care and Pain Therapy Service, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Giada Maspero
- Anesthesia, Intensive Care and Pain Therapy Service, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Valentina Bellini
- Anesthesia, Intensive Care and Pain Therapy Service, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Tommaso Bocchialini
- Department of Urology, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Domenico Cavalieri
- Department of Urology, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Elena Giovanna Bignami
- Anesthesia, Intensive Care and Pain Therapy Service, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
| | - Umberto Maestroni
- Department of Urology, University-Hospital of Parma, Via Gramsci, 14, Parma, Italy
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El Demerdash N, Kedda J, Ram N, Brem H, Tyler B. Novel therapeutics for brain tumors: current practice and future prospects. Expert Opin Drug Deliv 2020; 17:9-21. [DOI: 10.1080/17425247.2019.1676227] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nagat El Demerdash
- Department of Neurosurgery, Hunterian Neurosurgical Research Laboratory, Johns Hopkins University, Baltimore, MD, USA
| | - Jayanidhi Kedda
- Department of Neurosurgery, Hunterian Neurosurgical Research Laboratory, Johns Hopkins University, Baltimore, MD, USA
| | - Nivi Ram
- Department of Neurosurgery, Hunterian Neurosurgical Research Laboratory, Johns Hopkins University, Baltimore, MD, USA
| | - Henry Brem
- Department of Neurosurgery, Hunterian Neurosurgical Research Laboratory, Johns Hopkins University, Baltimore, MD, USA
- Departments of Biomedical Engineering, Oncology, and Ophthalmology, Johns Hopkins University, Baltimore, MD, USA
| | - Betty Tyler
- Department of Neurosurgery, Hunterian Neurosurgical Research Laboratory, Johns Hopkins University, Baltimore, MD, USA
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Nagarajan VK, Ward JM, Yu B. Association of Liver Tissue Optical Properties and Thermal Damage. Lasers Surg Med 2020; 52:779-787. [PMID: 31919868 DOI: 10.1002/lsm.23209] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND OBJECTIVES Complete thermocoagulation of tumors is vital to minimize the risk of local tumor recurrence after a thermal ablation. Histological assessments are not real-time and require experienced pathologists to grade the thermal damage (histopathology) [Correction added on 21 January, 2020 after first online publication: After thermal damage in the preceding sentence, (histopathology) was added]. Real-time assessment of thermal tissue damage during an ablation is necessary to achieve optimal tumor ablation. In our previous studies, we found that continuous monitoring of the wavelength-averaged (435-630 nm) tissue absorption coefficient (µa ) and the reduced scattering coefficient ( μ s ' ) during heating of a porcine liver at 100°C follows a sigmoidal growth curve. Therefore, we concluded that increases in the tissue µa and μ s ' during thermocoagulation were correlated with true thermal damage. The goal of this study was to determine if increases in the tissue µa and μ s ' during thermocoagulation are correlated with true thermal damage. STUDY DESIGN/MATERIALS AND METHODS In this paper, continuously measured values of µa and μ s ' during heating of the porcine liver tissue were compared with the histology-assessed thermal damage scores at four different temperature points (37°C, 55°C, 65°C, and 75°C). RESULTS The damage scores for the tissues in Group 3 (65°C) and Group 4 (75°C) were significantly different from each other and from the other groups. The damage scores were not significantly different between Group 1 (37°C) and Group 2 (55°C). CONCLUSION The results indicate that relative changes in µa and μ s ' can be used to classify thermal damage (histopathology) scores with an overall accuracy of 72.5% up to 75°C. [Correction added on 21 January, 2020 after first online publication: After thermal damage in the preceding sentence, (histopathology) was added]. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Vivek Krishna Nagarajan
- Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, Milwaukee, Wisconsin, 53045
| | - Jerrold M Ward
- Global Vet Pathology, Montgomery Village, Maryland, 20886
| | - Bing Yu
- Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, Milwaukee, Wisconsin, 53045
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Wang P, Sun S, Ma H, Sun S, Zhao D, Wang S, Liang X. Treating tumors with minimally invasive therapy: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110198. [PMID: 31923997 DOI: 10.1016/j.msec.2019.110198] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 09/01/2019] [Accepted: 09/11/2019] [Indexed: 12/13/2022]
Abstract
With high level of morbidity and mortality, tumor is one of the deadliest diseases worldwide. Aiming to tackle tumor, researchers have developed a lot of strategies. Among these strategies, the minimally invasive therapy (MIT) is very promising, for its capability of targeting tumor cells and resulting in a small incision or no incisions. In this review, we will first illustrate some mechanisms and characteristics of tumor metastasis from the primary tumor to the secondary tumor foci. Then, we will briefly introduce the history, characteristics, and advantages of some of the MITs. Finally, emphasis will be, respectively, focused on an overview of the state-of-the-art of the HIFU-, PDT-, PTT-and SDT-based anti-tumor strategies on each stage of tumor metastasis.
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Affiliation(s)
- Ping Wang
- Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China
| | - Suhui Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China
| | - Huide Ma
- Ordos Center Hospital, Ordos, Inner Mongolia, 017000, China
| | - Sujuan Sun
- Ordos Center Hospital, Ordos, Inner Mongolia, 017000, China
| | - Duo Zhao
- Ordos Center Hospital, Ordos, Inner Mongolia, 017000, China
| | - Shumin Wang
- Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China.
| | - Xiaolong Liang
- Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China.
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Xiao X, Feng Z, Li T, Yi B, Zhang S, Wang W. Comparing the Efficacy and Safety of High-Intensity Focused Ultrasound and Uterine Artery Embolization in Caesarean Scar Pregnancy: A Meta-analysis. Adv Ther 2019; 36:1314-1325. [PMID: 31049875 DOI: 10.1007/s12325-019-00959-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Indexed: 12/15/2022]
Abstract
INTRODUCTION High-intensity focused ultrasound (HIFU) followed by curettage and uterine artery embolization (UAE) followed by curettage are two methods of treatment for caesarean scar pregnancy (CSP). There is currently no consistent evidence concerning any difference in efficacy and safety between UAE and HIFU. Therefore, a meta-analysis was performed to compare the efficacy and safety of HIFU and UAE in the treatment of CSP. METHODS Studies published in PubMed, Cochrane, Embase, Web of Science, Chinese BioMedical Literature Service System, and Chinese National Knowledge Infrastructure databases were searched and the main outcomes in the studies were extracted. RESULTS Of 8 studies and 715 patients included in this study, 388 and 327 patients were in the HIFU group and UAE groups, respectively. Compared with the UAE group, patients in the HIFU group had less blood loss [weighted mean difference (WMD) = - 22.58 ml; 95% confidence interval (CI) - 44.45 to - 0.70; p < 0.05), lower incidence of adverse events [odds ratio (OR) = 0.17; 95% CI 0.06-0.46; p < 0.05); shorter duration of hospital stay (WMD = - 0.96 days; 95% CI - 1.88 to - 0.03; p < 0.05); and a longer β-human chorionic gonadotropin normalisation time (WMD = 9.59 days; 95% CI 1.66-17.52; p < 0.05). CONCLUSION Patients in the HIFU group appeared to have better outcomes than those in the UAE group; thus, HIFU may be a priority option for the early management of CSP. However, this needs to be confirmed by multi-centre, large-scale randomised controlled trials.
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Affiliation(s)
- Xiaoyi Xiao
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhichao Feng
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ting Li
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Bin Yi
- Department of Cardiovascular Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shengwang Zhang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wei Wang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China.
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Carina V, Costa V, Sartori M, Bellavia D, De Luca A, Raimondi L, Fini M, Giavaresi G. Adjuvant Biophysical Therapies in Osteosarcoma. Cancers (Basel) 2019; 11:cancers11030348. [PMID: 30871044 PMCID: PMC6468347 DOI: 10.3390/cancers11030348] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/28/2019] [Accepted: 03/08/2019] [Indexed: 12/22/2022] Open
Abstract
Osteosarcoma (OS) is a primary bone sarcoma, manifesting as osteogenesis by malignant cells. Nowadays, patients’ quality of life has been improved, however continuing high rates of limb amputation, pulmonary metastasis and drug toxicity, remain unresolved issues. Thus, effective osteosarcoma therapies are still required. Recently, the potentialities of biophysical treatments in osteosarcoma have been evaluated and seem to offer a promising future, thanks in this field as they are less invasive. Several approaches have been investigated such as hyperthermia (HT), high intensity focused ultrasound (HIFU), low intensity pulsed ultrasound (LIPUS) and sono- and photodynamic therapies (SDT, PDT). This review aims to summarize in vitro and in vivo studies and clinical trials employing biophysical stimuli in osteosarcoma treatment. The findings underscore how the technological development of biophysical therapies might represent an adjuvant role and, in some cases, alternative role to the surgery, radio and chemotherapy treatment of OS. Among them, the most promising are HIFU and HT, which are already employed in OS patient treatment, while LIPUS/SDT and PDT seem to be particularly interesting for their low toxicity.
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Affiliation(s)
- Valeria Carina
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Viviana Costa
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Maria Sartori
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Daniele Bellavia
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Angela De Luca
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Lavinia Raimondi
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Milena Fini
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
| | - Gianluca Giavaresi
- IRCCS-Istituto Ortopedico Rizzoli, via Di Barbiano 1/10, 40136 Bologna, Italy.
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Nonuniform Bessel-Based Radiation Distributions on A Spherically Curved Boundary for Modeling the Acoustic Field of Focused Ultrasound Transducers. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9050911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Therapeutic focused ultrasound is a technique that can be used with different intensities depending on the application. For instance, low intensities are required in nonthermal therapies, such as drug delivering, gene therapy, etc.; high intensity ultrasound is used for either thermal therapy or instantaneous tissue destruction, for example, in oncologic therapy with hyperthermia and tumor ablation. When an adequate therapy planning is desired, the acoustic field models of curve radiators should be improved in terms of simplicity and congruence at the prefocal zone. Traditional ideal models using uniform vibration distributions usually do not produce adequate results for clamped unbacked curved radiators. In this paper, it is proposed the use of a Bessel-based nonuniform radiation distribution at the surface of a curved radiator to model the field produced by real focused transducers. This proposal is based on the observed complex vibration of curved transducers modified by Lamb waves, which have a non-negligible effect in the acoustic field. The use of Bessel-based functions to approximate the measured vibration instead of using plain measurements simplifies the rationale and expands the applicability of this modeling approach, for example, when the determination of the effects of ultrasound in tissues is required.
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Farris M, Bastianelli C, Rosato E, Brosens I, Benagiano G. Uterine fibroids: an update on current and emerging medical treatment options. Ther Clin Risk Manag 2019; 15:157-178. [PMID: 30774352 PMCID: PMC6350833 DOI: 10.2147/tcrm.s147318] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Uterine fibroids are the most common gynecological disorder, classically requiring surgery when symptomatic. Although attempts at finding a nonsurgical cure date back to centuries, it is only around the middle of the last century that serious attempts at a medical treatment were carried out. Initially, both progestins and estrogen–progestin combinations have been utilized, although proof of their usefulness is lacking. A major step forward was achieved when peptide analogs of the GnRH were introduced, first those with superagonist properties and subsequently those acting as antagonists. Initially, the latter produced side effects preventing their routine utilization; eventually, this problem was overcome following the synthesis of cetrorelix. Because both types of analogs produce hypoestrogenism, their use is limited to a maximum of 6 months and, for this reason, today they are utilized as an adjuvant treatment before surgery with overall good results. Over the last decade, new, nonpeptidic, orally active GnRH-receptor blockers have also been synthesized. One of them, Elagolix, is in the early stages of testing in women with fibroids. Another fundamental development has been the utilization of the so-called selective progesterone receptor modulators, sometimes referred to as “antiprogestins”. The first such compound to be applied to the long-term treatment of fibroids was Mifepristone; today, this compound is mostly used outside of Western Countries, where the substance of choice is Ulipristal acetate. Large clinical trials have proven the effectiveness of Ulipristal in the long-term medical therapy of fibroids, although some caution must be exercised because of the rare occurrence of liver complications. All selective progesterone receptor modulators produce unique endometrial changes that are today considered benign, reversible, and without negative consequences. In conclusion, long-term medical treatment of fibroids seems possible today, especially in premenopausal women.
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Affiliation(s)
- Manuela Farris
- Department of Gynecology, Obstetrics and Urology, Sapienza, University of Rome, Rome, Italy, .,The Italian Association for Demographic Education, Rome, Italy,
| | - Carlo Bastianelli
- Department of Gynecology, Obstetrics and Urology, Sapienza, University of Rome, Rome, Italy,
| | - Elena Rosato
- Department of Gynecology, Obstetrics and Urology, Sapienza, University of Rome, Rome, Italy,
| | - Ivo Brosens
- Faculty of Medicine, KU Leuven, Leuven, Belgium
| | - Giuseppe Benagiano
- Department of Gynecology, Obstetrics and Urology, Sapienza, University of Rome, Rome, Italy,
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Cafarelli A, Chanel LA, Di Bartolo F, Locteau H, Tognarelli S, Dumont E, Menciassi A. Ultrasound Acoustic Radiation Force Impulse imaging for High Intensity Focused Ultrasound focal spot localization. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:5713-5716. [PMID: 30441633 DOI: 10.1109/embc.2018.8513591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Focal spot precise localization highly contributes to the accuracy and safety of High Intensity Focused Ultrasound (HIFU) therapies, and it is usually performed by means of Magnetic Resonance-Acoustic Radiation Force Impulse imaging (MR-ARFI). Acoustic Radiation Force Impulse imaging using ultrasound (US-ARFI) is herein proposed as a valid alternative to MR-ARFI for an accurate and non-destructive detection of the focal spot position during the pre-treatment phase. To this aim, a system composed of a HIFU transducer for generating the acoustic radiation force and a 2D confocal ultrasound probe for measuring the induced micro-displacement have been used. Then, an algorithm based on the Normalized Cross Correlation was implemented for the creation of a displacement map in which the highest displacement area, corresponding to the focal spot region, is unequivocally visualized. The feasibility of the proposed USARFI method for HIFU focal spot localization was successfully demonstrated in a tissue mimicking phantom model.
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The predictive value of quantitative DCE metrics for immediate therapeutic response of high-intensity focused ultrasound ablation (HIFU) of symptomatic uterine fibroids. Abdom Radiol (NY) 2018; 43:2169-2175. [PMID: 29204677 DOI: 10.1007/s00261-017-1426-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE The aim of this study was to investigate the value of quantitative DCE-MRI parameters for predicting the immediate non-perfused volume ratio (NPVR) of HIFU therapy in the treatment of symptomatic uterine fibroids. MATERIALS AND METHODS A total of 78 symptomatic uterine fibroids in 65 female patients were treated with US-HIFU therapy. All patients underwent conventional MRI and DCE-MRI scans 1 day before and 3 days after HIFU treatment. Permeability parameters K trans, K ep, V e, and V p and T1 perfusion parameters BF and BV of pretreatment were measured as a baseline, while NPVR was used to assess immediate ablation efficiency. Data were assigned to NPVR ≧ 70% and NPVR < 70% groups. Then, the predictive performances of different parameters for ablation efficacy were studied to seek the optimal cut-off value, and the length of time to calculate the variable parameters in each case was recorded. RESULTS (1) It was observed that the pretreatment K trans, K ep, V e, and BF values of the NPVR ≧ 70% group were significantly lower compared to the NPVR < 70% group (p < 0.05). (2) The immediate NPVR was negatively correlated with the K trans, BF, and BV values before HIFU treatment (r = - 0.561, - 0.712, and - 0.528, respectively, p < 0.05 for all). (3) The AUCs of pretreatment K trans, BF, BV values, and K trans combined with BF used to predict the immediate NPVR were 0.810, 0.909, 0.795, and 0.922, respectively (p < 0.05 for all). (4) The mean time to calculate the variable parameters in each case was 7.5 min. CONCLUSION Higher K trans, BF, and BV values at baseline DCE-MRI suggested a poor ablation efficacy of HIFU therapy for symptomatic uterine fibroids, while the pretreatment DCE-MRI parameters could be useful biomarkers for predicting the ablation efficacy in select cases. The software used to calculate DCE-MRI parameters was simpler, quicker, and easier to incorporate into clinical practice.
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Noble-Vranish ML, Song S, Morrison KP, Tran DM, Sun RR, Loeb KR, Keilman GW, Miao CH. Ultrasound-Mediated Gene Therapy in Swine Livers Using Single-Element, Multi-lensed, High-Intensity Ultrasound Transducers. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2018; 10:179-188. [PMID: 30105275 PMCID: PMC6077835 DOI: 10.1016/j.omtm.2018.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 06/26/2018] [Indexed: 01/21/2023]
Abstract
We have achieved significant enhancement of gene delivery into livers of large animals using ultrasound (US)-targeted microbubble (MB) destruction methods. An infusion of pGL4 (encoding a luciferase reporter gene) plasmid DNA (pDNA) and MBs into a portal-vein segmental branch of a porcine liver was exposed to US for 4 min. Therapeutic US induced cavitation of MBs to temporarily permeabilize the vascular endothelium and cell membranes, allowing entry of pDNA. We obtained a 64-fold enhancement in luciferase expression in pig livers compared to control without US using an unfocused, dual-element transducer (H105, center frequency [fc] = 1.10 MHz) at 2.7 MPa peak negative pressure (PNP). However, input electrical energy was limited, and modified transducers were designed to have spherical (H185A, fc = 1.10 MHz) or cylindrical foci (H185B, fc = 1.10 MHz; H185D, fc = 1.05 MHz) to enhance PNP output. The revised transducers required less electrical input to achieve 2.7 MPa PNP compared to H105, thereby allowing PNP outputs of up to 6.2 MPa without surpassing the piezo-material limitations. Subsequently, luciferase expression significantly improved up to 9,000-fold compared to controls with minor liver damage. These advancements will allow us to modify our current protocols toward minimally invasive US gene therapy.
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Affiliation(s)
- Misty L Noble-Vranish
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Shuxian Song
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | | | - Dominic M Tran
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Ryan R Sun
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Keith R Loeb
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | | | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA.,Department of Pediatrics, University of Washington, Seattle, WA 98105, USA
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Giles SL, Winfield JM, Collins DJ, Rivens I, Civale J, ter Haar GR, deSouza NM. Value of diffusion-weighted imaging for monitoring tissue change during magnetic resonance-guided high-intensity focused ultrasound therapy in bone applications: an ex-vivo study. Eur Radiol Exp 2018; 2:10. [PMID: 29774894 PMCID: PMC5945713 DOI: 10.1186/s41747-018-0041-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/15/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) can palliate metastatic bone pain by periosteal neurolysis. We investigated the value of diffusion-weighted imaging (DWI) for monitoring soft tissue changes adjacent to bone during MR-guided HIFU. We evaluated the repeatability of the apparent diffusion coefficient (ADC) measurement, the temporal evolution of ADC change after sonication, and its relationship with thermal parameters. METHODS Ex-vivo experiments in lamb legs (n = 8) were performed on a Sonalleve MR-guided HIFU system. Baseline proton resonance frequency shift (PRFS) thermometry evaluated the accuracy of temperature measurements and tissue cooling times after exposure. PRFS acquired during sonication (n = 27) was used to estimate thermal dose volume and temperature. After repeat baseline measurements, DWI was assessed longitudinally and relative ADC changes were derived for heated regions. RESULTS Baseline PRFS was accurate to 1 °C and showed that tissues regained baseline temperatures within 5 min. Before sonication, coefficient of variation for repeat ADC measurements was 0.8%. After sonication, ADC increased in the muscle adjacent to the exposed periosteum, it was maximal 1-5 min after sonication, and it significantly differed between samples with persistent versus non-persistent ADC changes beyond 20 min. ADC increases at 20 min were stable for 2 h and correlated significantly with thermal parameters (ADC versus applied acoustic energy at 16-20 min: r = 0.77, p < 0.001). A 20% ADC increase resulted in clear macroscopic tissue damage. CONCLUSIONS Our preliminary results suggest that DWI can detect intra-procedural changes in ex-vivo muscle overlying the periosteum. This could be useful for studying the safety and efficacy of clinical MR-guided HIFU bone treatments.
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Affiliation(s)
- Sharon L. Giles
- MRI Unit, The Royal Marsden NHS Foundation Trust, London, UK
- Cancer Research UK Cancer Imaging Centre, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - Jessica M. Winfield
- MRI Unit, The Royal Marsden NHS Foundation Trust, London, UK
- Cancer Research UK Cancer Imaging Centre, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - David J. Collins
- Cancer Research UK Cancer Imaging Centre, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - Ian Rivens
- Therapeutic Ultrasound, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - John Civale
- Therapeutic Ultrasound, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - Gail R. ter Haar
- Therapeutic Ultrasound, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
| | - Nandita M. deSouza
- Cancer Research UK Cancer Imaging Centre, Division of Imaging and Radiotherapy, The Institute of Cancer Research, London, UK
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Singh VA, Shah SU, Yasin NF, Abdullah BJJ. Magnetic resonance guided focused ultrasound for treatment of bone tumors. J Orthop Surg (Hong Kong) 2018; 25:2309499017716256. [PMID: 28659052 DOI: 10.1177/2309499017716256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIMS Magnetic resonance guided focused ultrasound (MRgFUS) is a new modality in the management of primary and secondary bone tumors. We aimed to investigate the safety, efficacy, and feasibility of using MRgFUS for the treatment of (1) benign bone tumors with the intent of complete tumor ablation, (2) primary malignant bone tumors with the intent to assess its effectiveness in causing tumor necrosis, and (3) metastatic bone disease with the intent of pain relief. METHOD Twenty-four patients with benign bone tumors, primary malignant bone tumors, and metastatic bone disease were treated with one session of MRgFUS. Contrast-enhanced (CE) magnetic resonance imaging (MRI) was carried out post-procedure to assess and quantify the area of ablation. Those with malignant primary tumors had the tumors resected 2 weeks after the treatment and the ablated areas were examined histopathologically (HPE). The other patients were followed up for 3 months to assess for the side effects and pain scores. RESULTS Significant volume of ablation was noted on CE MRI after the treatment. Benign bone tumors were ablated with minimal adverse effects. Metastatic bone disease was successfully treated with significant decrease in pain scores. Ablated primary malignant tumors showed significant coagulative necrosis on MRI and the HPE showed 100% necrosis. Pain scores significantly decreased 3 months after the procedure. Only two patients had superficial skin blistering and three patients had increase in pain scores immediately after treatment. CONCLUSION MRgFUS is effective, safe, and noninvasive procedure that can be an adjunct in the management of primary and metastatic bone tumors.
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Affiliation(s)
- Vivek Ajit Singh
- 1 Department of Orthopaedics (Noceral), Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Syed Usman Shah
- 1 Department of Orthopaedics (Noceral), Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Nor Faissal Yasin
- 1 Department of Orthopaedics (Noceral), Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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High-intensity focused ultrasound (HIFU) treatment for uterine fibroids: a meta-analysis. Arch Gynecol Obstet 2017; 296:1181-1188. [DOI: 10.1007/s00404-017-4548-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 09/20/2017] [Indexed: 12/18/2022]
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Skjelvareid MH, Stormo SK, Þórarinsdóttir KA, Heia K. Weakening Pin Bone Attachment in Fish Fillets Using High-Intensity Focused Ultrasound. Foods 2017; 6:foods6090082. [PMID: 28926968 PMCID: PMC5615294 DOI: 10.3390/foods6090082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/08/2017] [Indexed: 01/09/2023] Open
Abstract
High Intensity Focused Ultrasound (HIFU) can be used for the localized heating of biological tissue through the conversion of sound waves into heat. Although originally developed for human medicine, HIFU may also be used to weaken the attachment of pin bones in fish fillets to enable easier removal of such bones. This was shown in the present study, where a series of experiments were performed on HIFU phantoms and fillets of cod and salmon. In thin objects such as fish fillets, the heat is mainly dissipated at the surfaces. However, bones inside the fillet absorb ultrasound energy more efficiently than the surrounding tissue, resulting in a “self-focusing” heating of the bones. Salmon skin was found to effectively block the ultrasound, resulting in a significantly lower heating effect in fillets with skin. Cod skin partly blocked the ultrasound, but only to a small degree, enabling HIFU treatment through the skin. The treatment of fillets to reduce the pin bone attachment yielded an average reduction in the required pulling force by 50% in cod fillets with skin, with little muscle denaturation, and 72% in skinned fillets, with significant muscle denaturation. Salmon fillets were treated from the muscle side of the fillet to circumvent the need for penetration through skin. The treatment resulted in a 30% reduction in the peak pulling force and 10% reduction in the total pulling work, with a slight denaturation of the fillet surface.
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Affiliation(s)
| | | | | | - Karsten Heia
- Department of Seafood Industry, Nofima AS, P.O. Box 6122, 9291 Tromsø, Norway.
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Magnetic Resonance Imaging-Guided Focused Ultrasound Surgery for the Treatment of Symptomatic Uterine Fibroids. Case Rep Radiol 2017; 2017:2520989. [PMID: 28553555 PMCID: PMC5434313 DOI: 10.1155/2017/2520989] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/10/2017] [Accepted: 04/02/2017] [Indexed: 01/24/2023] Open
Abstract
Uterine fibroids, the most common benign tumor in women of childbearing age, may cause symptoms including pelvic pain, menorrhagia, dysmenorrhea, pressure, urinary symptoms, and infertility. Various approaches are available to treat symptomatic uterine fibroids. Magnetic Resonance-guided Focused Ultrasound Surgery (MRgFUS) represents a recently introduced noninvasive safe and effective technique that can be performed without general anesthesia, in an outpatient setting. We review the principles of MRgFUS, describing patient selection criteria for the treatments performed at our center and we present a series of five selected patients with symptomatic uterine fibroids treated with this not yet widely known technique, showing its efficacy in symptom improvement and fibroid volume reduction.
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Moderate-to-deep sedation technique, using propofol and ketamine, allowing synchronised breathing for magnetic resonance high-intensity focused ultrasound (MR-HIFU) treatment for uterine fibroids: a pilot study. J Ther Ultrasound 2017; 5:8. [PMID: 28194274 PMCID: PMC5299783 DOI: 10.1186/s40349-017-0088-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 01/06/2017] [Indexed: 02/07/2023] Open
Abstract
Background Magnetic resonance high-intensity focused ultrasound (MR-HIFU) treatment for uterine fibroids is rapidly gaining popularity as a treatment modality. This procedure is generally uncomfortable, painful, and requires minimal or absence of movement and an MR-HIFU synchronised breathing pattern of the patient. Procedural sedation and analgesia protocols have become the standard practice in interventional radiology departments worldwide. The aim of this study was to explore if a sedation regimen with low-dose propofol and ketamine performed by trained non-medical sedation practitioners could result in relief of discomfort for the patient and in adequate working conditions for MR-HIFU treatment for uterine fibroids. Methods In this study, conducted from August 2013 until November 2014, 20 patients were subjected to MR-HIFU treatment of uterine fibroids. Patients were deeply sedated using intravenous propofol and esketamine according to a standardised hospital protocol to allow synchronisation of the breathing pattern to the MR-HIFU. The quality of sedation for MR-HIFU and complications were recorded and analysed. The side effects of the sedation technique, the propofol and esketamine consumption rate, the duration of recovery, and patient satisfaction after 24 h were examined. Results A total of 20 female patients (mean age 42.4 [range 32–53] years) were enrolled. Mean propofol/esketamine dose was 1309 mg/39.5 mg (range 692–1970 mg/ 23.6–87.9 mg). Mean procedure time was 269 min (range 140–295 min). Application of the sedation protocol resulted in a regular breathing pattern, which could be synchronised with the MR-HIFU procedures without delay. The required treatment was completed in all cases. There were no major adverse events. Hypoxemia (oxygen desaturation <92%) and hallucinations were not observed. Conclusions The use of a specific combination of IV propofol and esketamine for procedural sedation and analgesia reduced the discomfort and pain during MR-guided HIFU treatments of uterine fibroids. The resulting regular breathing pattern allowed for easy synchronisation of the MR-HIFU procedure. Based on our results, esketamine and propofol sedation performed by trained non-medical sedation practitioners is feasible and safe, has a low risk of major adverse events, and has a short recovery time, avoiding a session of general anaesthesia. Electronic supplementary material The online version of this article (doi:10.1186/s40349-017-0088-9) contains supplementary material, which is available to authorized users.
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Uncertainty estimation for temperature measurement with diagnostic ultrasound. J Ther Ultrasound 2016; 4:28. [PMID: 27957332 PMCID: PMC5131492 DOI: 10.1186/s40349-016-0071-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/01/2016] [Indexed: 12/16/2022] Open
Abstract
Background Ultrasound therapies are promising, non-invasive applications with potential to significantly improve, e.g. cancer therapies like viro- or immunotherapy or surgical applications. However, a crucial step towards their breakthrough is still missing: affordable and easy-to-handle quality assurance tools for therapy devices and ways to verify treatment planning algorithms. This deficiency limits the safety and comparability of treatments. Methods To overcome this deficiency accurate spatial and temporal temperature maps could be used. In this paper, the suitability of temperature calculation based on time-shifts of diagnostic ultrasound backscattered signals (echo-time-shift) is investigated and associated uncertainties are estimated. Different analysis variations were used to calculate the time-shifts: discrete and continuous methods as well as different frames as a reference for temperature calculation (4 s before, 16 s before the frame of interest, base frame). A sigmoid function was fitted and used to calculate temperatures. Two-dimensional temperature maps recorded during and after therapeutic ultrasound sonication were examined. All experiments were performed in agar-graphite phantoms mimicking non-fatty tissue, with high-intensity focused ultrasound being the source of heating. Results Continuous methods are more accurate than discrete ones, and uncertainties of calculated temperatures are in general lower, the earlier the reference frame was recorded. Depending on the purpose of the measurement, a compromise has to be made between the following: calculation accuracy (early reference frame), tolerance towards small movements (late reference frame), reproducing large temperature changes or cooling processes (reference frame at a certain point in time), speed of the algorithm (discrete (fast) vs. continuous (slower) shift calculation), and spatial accuracy (interval size for index-shift calculation). Within the range from 20 °C to 44 °C, uncertainties as low as 12.4 % are possible, being mainly due to medium properties. Conclusions Temperature measurements using the echo-time-shift method might be useful for validation of treatment plan algorithms. This might also be a comparatively accurate, fast, and affordable method for laboratory and clinical quality assessment. Further research is necessary to improve filter algorithms and to extend this method to multiple foci and the usage of temperature-dependent tissue quantities. We used an analytical approach to investigate the uncertainties of temperature measurement. Different analysis variations are compared to determine temperature distribution and development over time.
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Darby B. High-Intensity Focused Ultrasound (HIFU) and the Clinical Applications for the Female Pelvis. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2016. [DOI: 10.1177/8756479316664886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
High-intensity focused ultrasound (HIFU) is a noninvasive, nonionizing means to therapeutically treat various medical conditions. Although HIFU has proven useful in the treatment of a variety of conditions, in recent years, more research has been conducted on how HIFU treatments can be used to treat conditions related to the female pelvis. Some of the medical conditions being researched are uterine fibroids, adenomyosis, cervicitis, and polycystic ovaries. Clinical studies have demonstrated the effectiveness of HIFU in the treatment of these medical conditions unique to the female pelvis. This literature review will be used to introduce the technology of HIFU, present an overall analysis of HIFU, provide a review on the latest clinical research concerning HIFU clinical applications for pathologic conditions of the female pelvis, and identify the impact of HIFU on patients and the ultrasound community.
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Affiliation(s)
- Beth Darby
- Greenville Technical College–Medical Imaging Science, Greenville, SC, USA
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Treutwein M, Schad L. Highly cited articles in "Zeitschrift für Medizinische Physik". Z Med Phys 2016; 26:293-294. [PMID: 27765385 DOI: 10.1016/j.zemedi.2016.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yuan SM, Li H, Yang M, Zha H, Sun H, Li XR, Li AF, Gu Y, Duan L, Luo JY, Li CY, Wang Y, Wang ZB, He TC, Zhou L. High intensity focused ultrasound enhances anti-tumor immunity by inhibiting the negative regulatory effect of miR-134 on CD86 in a murine melanoma model. Oncotarget 2016; 6:37626-37. [PMID: 26485753 PMCID: PMC4741953 DOI: 10.18632/oncotarget.5285] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 08/16/2015] [Indexed: 12/30/2022] Open
Abstract
HIFU has been demonstrated to enhance anti-tumor immunity, however, the mechanism of which has not been well elucidated. Emerging evidence indicates that miRNAs play important roles in immune response. In this study, we used the B16F10 melanoma allograft mouse model to investigate the role of miRNAs in HIFU-enhanced anti-tumor immunity. We found that HIFU treatment decreased circulating B16F10 cells and pulmonary metastasis nodules while increased IFN-γ and TNF-α in the peripheral blood and cumulative mouse survival, which was associated with inhibition of miR-134 expression and activation of CD86 expression in tumor tissues. Further, we determined that miR-134 directly binds to the 3′UTR of CD86 mRNA to suppress its expression in B16F10 cells. When B16F10 cells transfected with miR-134 were co-cultured with normal splenic lymphocytes, the secretion of IFN-γ and TNF-α from lymphocytes was reduced and B16F10 cell survival was increased. HIFU exposure efficiently decreased miR-134 while increased CD86 expression in B16F10 cells in vitro. CD86 knockdown with siRNA markedly rescued the viability of HIFU-treated B16F10 cells that co-cultured with lymphocytes. Altogether, our results suggest that HIFU down-regulates miR-134 to release the inhibition of miR-134 on CD86 in melanoma cells, thereby enhancing anti-tumor immune response.
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Affiliation(s)
- Shi-Mei Yuan
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Huan Li
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Min Yang
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - He Zha
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Hui Sun
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Xue-Ru Li
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Ai-Fang Li
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Yue Gu
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Liang Duan
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Jin-Yong Luo
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Chong-Yan Li
- State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and The Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Yan Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and The Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Zhi-Biao Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and The Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Tong-Chuan He
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China.,Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Lan Zhou
- Key Laboratory of Clinical Diagnosis of Education Ministry, College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
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Nagarajan VK, Yu B. Monitoring of tissue optical properties during thermal coagulation of ex vivo tissues. Lasers Surg Med 2016; 48:686-94. [PMID: 27250022 DOI: 10.1002/lsm.22541] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND AND OBJECTIVE Real-time monitoring of tissue status during thermal ablation of tumors is critical to ensure complete destruction of tumor mass, while avoiding tissue charring and excessive damage to normal tissues. Currently, magnetic resonance thermometry (MRT), along with magnetic resonance imaging (MRI), is the most commonly used technique for monitoring and assessing thermal ablation process in soft tissues. MRT/MRI is very expensive, bulky, and often subject to motion artifacts. On the other hand, light propagation within tissue is sensitive to changes in tissue microstructure and physiology which could be used to directly quantify the extent of tissue damage. Furthermore, optical monitoring can be a portable, and cost-effective alternative for monitoring a thermal ablation process. The main objective of this study, is to establish a correlation between changes in tissue optical properties and the status of tissue coagulation/damage during heating of ex vivo tissues. MATERIALS AND METHODS A portable diffuse reflectance spectroscopy system and a side-firing fiber-optic probe were developed to study the absorption (μa (λ)), and reduced scattering coefficients (μ's (λ)) of native and coagulated ex vivo porcine, and chicken breast tissues. In the first experiment, both porcine and chicken breast tissues were heated at discrete temperature points between 24 and 140°C for 2 minutes. Diffuse reflectance spectra (430-630 nm) of native and coagulated tissues were recorded prior to, and post heating. In a second experiment, porcine tissue samples were heated at 70°C and diffuse reflectance spectra were recorded continuously during heating. The μa (λ) and μ's (λ) of the tissues were extracted from the measured diffuse reflectance spectra using an inverse Monte-Carlo model of diffuse reflectance. Tissue heating was stopped when the wavelength-averaged scattering plateaued. RESULTS The wavelength-averaged optical properties, <μ's (λ)> and <μa (λ)>, for native porcine tissues (n = 66) at room temperature, were 5.4 ± 0.3 cm(-1) and 0.780 ± 0.008 cm(-1) (SD), respectively. The <μ's (λ)> and <μa (λ)> for native chicken breast tissues (n = 66) at room temperature, were 2.69 ± 0.08 cm(-1) and 0.29 ± 0.01 cm(-1) (SD), respectively. In the first experiment, the <μ's (λ)> of coagulated porcine and chicken breast tissue rose to 56.4 ± 3.6 cm(-1) at 68.7 ± 1.7°C (SD), and 52.8 ± 1 cm(-1) at 57.1 ± 1.5°C (SD), respectively. Correspondingly, the <μa (λ)> of coagulated porcine (140.6°C), and chicken breast tissues (130°C) were 0.75 ± 0.05 cm(-1) and 0.263 ± 0.004 cm(-1) (SD). For both tissues, charring was observed at temperatures above 80°C. During continuous monitoring of porcine tissue (with connective tissues) heating, the <μ's (λ)> started to rise rapidly from 13.7 ± 1.5 minutes and plateaued at 19 ± 2.5 (SD) minutes. The <μ's (λ)> plateaued at 11.7 ± 3 (SD) minutes for porcine tissue devoid of connective tissue between probe and tissue surface. No charring was observed during continuous monitoring of thermal ablation process. CONCLUSION The changes in optical absorption and scattering properties can be continuously quantified, which could be used as a diagnostic biomarker for assessing tissue coagulation/damage during thermal ablation. Lasers Surg. Med. 48:686-694, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Vivek Krishna Nagarajan
- Department of Biomedical Engineering, The University of Akron, Auburn Science and Engineering Center (ASEC) 275, West Tower, Akron, Ohio, 44325-0302
| | - Bing Yu
- Department of Biomedical Engineering, The University of Akron, Auburn Science and Engineering Center (ASEC) 275, West Tower, Akron, Ohio, 44325-0302
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Bai Y, Luo X, Li Q, Yin N, Fu X, Zhang H, Qi H. High-intensity focused ultrasound treatment of placenta accreta after vaginal delivery: a preliminary study. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2016; 47:492-498. [PMID: 25846712 DOI: 10.1002/uog.14867] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 03/23/2015] [Accepted: 03/29/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To evaluate the safety and efficiency of high-intensity focused ultrasound (HIFU) in the treatment of placenta accreta after vaginal delivery. METHODS Enrolled into this study between September 2011 and September 2013 were 12 patients who had been diagnosed with placenta accreta following vaginal delivery and who had stable vital signs. All patients were treated using an ultrasound-guided HIFU treatment system. As indication of the effectiveness of the treatment we considered decreased vascular index on color Doppler imaging, decrease in size of residual placenta compared with pretreatment size on assessment by three-dimensional ultrasound with Virtual Organ Computer-aided Analysis, reduced signal intensity and degree of enhancement on magnetic resonance imaging and avoidance of hysterectomy following treatment. To assess the safety of HIFU treatment, we recorded side effects, hemorrhage, infection, sex steroid levels, return of menses and subsequent pregnancy. Patients were followed up in this preliminary study until December 2013. RESULTS The 12 patients receiving HIFU treatment had an average postpartum hospital stay of 6.8 days and an average period of residual placental involution of 36.9 days. HIFU treatment did not apparently increase the risk of infection or hemorrhage and no patient required hysterectomy. In all patients menstruation recommenced after an average of 80.2 days, and sex steroid levels during the middle luteal phase of the second menstrual cycle were normal. Two patients became pregnant again during the follow-up period. CONCLUSION This preliminary study suggests that ultrasound-guided HIFU is a safe and effective non-invasive method to treat placenta accreta patients after vaginal delivery who have stable vital signs and desire to preserve fertility. Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- Y Bai
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - X Luo
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Q Li
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China
| | - N Yin
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - X Fu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - H Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - H Qi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Loeve AJ, Al-Issawi J, Fernandez-Gutiérrez F, Langø T, Strehlow J, Haase S, Matzko M, Napoli A, Melzer A, Dankelman J. Workflow and intervention times of MR-guided focused ultrasound – Predicting the impact of new techniques. J Biomed Inform 2016; 60:38-48. [DOI: 10.1016/j.jbi.2016.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 12/28/2015] [Accepted: 01/01/2016] [Indexed: 12/30/2022]
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Lesser TG, Schubert H, Güllmar D, Reichenbach JR, Wolfram F. One-lung flooding reduces the ipsilateral diaphragm motion during mechanical ventilation. Eur J Med Res 2016; 21:9. [PMID: 26957315 PMCID: PMC4784448 DOI: 10.1186/s40001-016-0205-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 02/26/2016] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Diaphragm motion during spontaneous or mechanical respiration hinders image-guided percutaneous interventions of tumours in lung and upper abdomen. Motion-tracking methods can be applied but increase procedure complexity and procedure time. One-lung flooding (OLF) generates a suitable acoustic pathway to lung tumours and likely suppress diaphragm motion. The aim of this study was to quantify the effect of OLF on ipsilateral diaphragm motion during contralateral one-lung ventilation. METHODS To measure the diaphragm motion, M-mode ultrasonography of the right hemidiaphragm was performed during spontaneous breathing and mechanical ventilation, as well as after right-side lung flooding, in three pigs. Diaphragm motion was analysed using magnetic resonance images during left-side lung flooding and mechanical ventilation, in four pigs. RESULTS Double-lung ventilation increased the diaphragm movement in comparison with spontaneous breathing (17.8 ± 4.4 vs. 12.2 ± 3.4 mm, p = 0.014). Diaphragm movement on the flooded side during contralateral one-lung ventilation was significantly reduced compared to that during double-lung ventilation (3.9 ± 1.0 vs. 17.8 ± 4.4 mm, p = 0.041). By analysing the magnetic resonance images, the hemidiaphragm on the flooded side showed an average displacement of 4.2 mm, a maximum displacement of 15 mm close to the ventilated lung and no displacement at the lateral side. CONCLUSION OLF leads to a drastic reduction of diaphragm motion on the ipsilateral side which implies that targeting and motion compensation algorithms for interventions like high-intensity focused ultrasound ablation of intrapulmonary and hepatic lesions might not be required.
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Affiliation(s)
- Thomas Günther Lesser
- Department of Thoracic and Vascular Surgery, SRH Wald-Klinikum Gera, Teaching Hospital of Friedrich-Schiller University of Jena, Strasse des Friedens 122, 07548, Gera, Germany.
| | - Harald Schubert
- Institute of Animal Experimentation and Animal Welfare, Jena University Hospital, Friedrich-Schiller University, Jena, Germany.
| | - Daniel Güllmar
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich-Schiller University, Jena, Germany.
| | - Jürgen R Reichenbach
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich-Schiller University, Jena, Germany.
| | - Frank Wolfram
- Department of Thoracic and Vascular Surgery, SRH Wald-Klinikum Gera, Teaching Hospital of Friedrich-Schiller University of Jena, Strasse des Friedens 122, 07548, Gera, Germany.
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