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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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Wu Q, Xia Y, Xiong X, Duan X, Pang X, Zhang F, Tang S, Su J, Wen S, Mei L, Cannon RD, Ji P, Ou Z. Focused ultrasound-mediated small-molecule delivery to potentiate immune checkpoint blockade in solid tumors. Front Pharmacol 2023; 14:1169608. [PMID: 37180717 PMCID: PMC10173311 DOI: 10.3389/fphar.2023.1169608] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 04/03/2023] [Indexed: 05/16/2023] Open
Abstract
In the last decade, immune checkpoint blockade (ICB) has revolutionized the standard of treatment for solid tumors. Despite success in several immunogenic tumor types evidenced by improved survival, ICB remains largely unresponsive, especially in "cold tumors" with poor lymphocyte infiltration. In addition, side effects such as immune-related adverse events (irAEs) are also obstacles for the clinical translation of ICB. Recent studies have shown that focused ultrasound (FUS), a non-invasive technology proven to be effective and safe for tumor treatment in clinical settings, could boost the therapeutic effect of ICB while alleviating the potential side effects. Most importantly, the application of FUS to ultrasound-sensitive small particles, such as microbubbles (MBs) or nanoparticles (NPs), allows for precise delivery and release of genetic materials, catalysts and chemotherapeutic agents to tumor sites, thus enhancing the anti-tumor effects of ICB while minimizing toxicity. In this review, we provide an updated overview of the progress made in recent years concerning ICB therapy assisted by FUS-controlled small-molecule delivery systems. We highlight the value of different FUS-augmented small-molecules delivery systems to ICB and describe the synergetic effects and underlying mechanisms of these combination strategies. Furthermore, we discuss the limitations of the current strategies and the possible ways that FUS-mediated small-molecule delivery systems could boost novel personalized ICB treatments for solid tumors.
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Affiliation(s)
- Qiuyu Wu
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Yuanhang Xia
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Xiaohe Xiong
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Xinxing Duan
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Xiaoxiao Pang
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Fugui Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Song Tang
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Junlei Su
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Shuqiong Wen
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
| | - Li Mei
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Richard D. Cannon
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Ping Ji
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- *Correspondence: Ping Ji, Zhanpeng Ou,
| | - Zhanpeng Ou
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, China
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- *Correspondence: Ping Ji, Zhanpeng Ou,
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Applications of Focused Ultrasound in the Treatment of Genitourinary Cancers. Cancers (Basel) 2022; 14:cancers14061536. [PMID: 35326687 PMCID: PMC8945954 DOI: 10.3390/cancers14061536] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Cancer is a prevalent disease globally, and conventional treatment options have been associated with substantial morbidity for patients. The unique acoustic properties and biological effects of focused ultrasound have been investigated for use as an alternative treatment option for various forms of cancer with lower associated morbidity than standard treatments. The objective of our review was to assess the current state and various applications of focused ultrasound for the treatment of genitourinary cancers, including prostate, kidney, bladder, penile, and testicular malignancies. Current research demonstrates that focused ultrasound-based focal therapy shows promise for the treatment of localized prostate and kidney cancer, and the effect of ultrasound on cell membranes may increase the efficacy of chemotherapeutics and radiotherapy. Focused ultrasound-based treatment modalities should continue to be investigated as an alternative or complementary treatment option for cancer patients. Abstract Traditional cancer treatments have been associated with substantial morbidity for patients. Focused ultrasound offers a novel modality for the treatment of various forms of cancer which may offer effective oncological control and low morbidity. We performed a review of PubMed articles assessing the current applications of focused ultrasound in the treatment of genitourinary cancers, including prostate, kidney, bladder, penile, and testicular cancer. Current research indicates that high-intensity focused ultrasound (HIFU) focal therapy offers effective short-term oncologic control of localized prostate and kidney cancer with lower associated morbidity than radical surgery. In addition, studies in mice have demonstrated that focused ultrasound treatment increases the accuracy of chemotherapeutic drug delivery, the efficacy of drug uptake, and cytotoxic effects within targeted cancer cells. Ultrasound-based therapy shows promise for the treatment of genitourinary cancers. Further research should continue to investigate focused ultrasound as an alternative cancer treatment option or as a complement to increase the efficacy of conventional treatments such as chemotherapy and radiotherapy.
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Sadeghi-Goughari M, Jeon S, Kwon HJ. Carbon nanotube-mediated high intensity focused ultrasound. NANO FUTURES 2021. [DOI: 10.1088/2399-1984/abfebc] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
High intensity focused ultrasound (HIFU) is emerging as a novel therapeutic technique for cancer treatment through a hyperthermal mechanism using ultrasound. However, collateral thermal damages to healthy tissue and skin burns due to the use of high levels of ultrasonic energy during HIFU treatment remain major challenges to clinical application. The main objective of the current study is to evaluate the potential of carbon nanotubes (CNTs) as effective absorption-enhancing agents for HIFU to mediate the heating process at low ultrasonic power levels, and consequently upgrade hyperthermal therapeutic effects of HIFU. An experimental study using in vitro tissue phantoms was conducted to assess the effects of CNTs on HIFU’s heating mechanism. Detailed information was extracted from the experiments for thermal analysis, including rate of absorbed energy density and temperature rise profile at the focal region. Parametric studies were carried out, revealing the effects of ultrasound parameters (ultrasonic power and driving frequency) on the performance of CNTs in various concentrations. The results indicated that CNTs significantly enhanced the thermal effect of HIFU by elevating energy absorption rate and consequential temperature rise. Moreover, it was demonstrated that an increase in ultrasonic power and driving frequency could lead to a better performance of CNTs during HIFU ablation procedures; the effects of CNTs could be further enhanced by increasing their volume concentration inside the medium.
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Manzoor I, Bacha R, Gilani SA. Applications of High-Intensity Focused Ultrasound in the Treatment of Different Pathologies. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2021. [DOI: 10.1177/8756479320972086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective: The purpose of this literature search was to review the benefits of high-intensity focused ultrasound (HIFU) and its application for different pathologies. Methods: This review summarizes the implementation of HIFU for different pathologic conditions. An National Center for Biotechnology Information, PubMed, MEDLINE, Medscape, and Google Scholar database search (1992–2016) was done with the following keywords: high-intensity focused ultrasound; uses of HIFU; and applications of HIFU in the liver, bones, uterine fibroids, prostate, breast, thyroid, pancreas, kidneys, brain, urinary bladder, and so on. Tables and graphs were created for all the variables included in the study, and descriptive statistics were applied. Results: In total, 110 records were identified, through database search. In addition, 20 articles were identified through other sources. Screening of the articles was performed, and 20 were removed due to duplication; further screening was performed for 110 articles, and 30 records were further excluded. Full-text articles were assessed for eligibility and 30 were retained. Full-text articles were excluded (N = 36) on the basis that research was performed on animals, and this review article was performed solely for human application. There were 42 qualitative syntheses that researches added to the review. In addition, 42 quantitative synthesis (meta-analysis) were added to the review. Conclusion: The conclusion of this narrative review indicates that HIFU is noninvasive, nonharmful, and effective in treating diseases and tumors of the brain, breast, bone, hepatic, renal, pancreas, and prostate; uterine fibroids; and many other solid tumors. Recent technological development suggests that HIFU is likely to play a significant role in future surgical practices. Further research works should be conducted on a large sample size to obtain more accurate results in the application of HIFU.
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Affiliation(s)
- Iqra Manzoor
- University Institute of Radiological Sciences and Medical Imaging Technologies, The University of Lahore, Lahore, Pakistan
| | - Raham Bacha
- University Institute of Radiological Sciences and Medical Imaging Technologies, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Syed Amir Gilani
- Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
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6
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Rigo M, Mazzola R, Napoli G, Giaj-Levra N, Figlia V, Nicosia L, Ricchetti F, Tomasini D, Bonù ML, Cuccia F, Bellorofonte C, Alongi F. Post-HIFU locally relapsed prostate cancer: high-dose salvage radiotherapy guided by molecular imaging. Radiol Med 2020; 125:491-499. [PMID: 32077006 DOI: 10.1007/s11547-020-01148-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/06/2020] [Indexed: 12/24/2022]
Abstract
PURPOSE To evaluate tolerance and biochemical control rates of salvage external beam radiotherapy (EBRT) in patients with local relapse from prostate cancer (PC) after high-intensity focused ultrasound (HIFU) as primary treatment. METHODS Twenty-four patients presented biochemical failure of PC. Salvage EBRT to the residual prostate was performed with moderate hypofractionation schedule (MHRT) in 28 fractions (n = 16) or with extreme hypofractionation schedule (SBRT) in 5 fractions (n = 8) by means of image-guided volumetric modulation arc therapy. In case of MHRT, the median dose was 71.4 Gy, whereas in case of SBRT it was 32.5 Gy. RESULTS The median follow-up was 28 months. The median PSA nadir was 0.26 ng/mL. In case of MHRT, the median PSA nadir was 0.15 ng/mL and occurred within a median time of 19 months. In case of SBRT, the median PSA nadir was 0.64 ng/mL and occurred within a median time of 8 months. No G3 higher acute or late toxicity after EBRT was observed. Only three patients presented with G2 acute GI toxicity (actinic proctitis). Twelve patients experienced acute G1 GU toxicity: 8/16 of men treated with MHRT and 4/8 of men treated with SBRT. Complete local control of disease was achieved in 23/24 patients (96%). CONCLUSIONS Our data confirm the feasibility and the low toxicity of salvage EBRT with both schedules of treatment after HIFU failure. The findings of low acute toxicity and good biochemical control rates are encouraging, but a larger number of patients and a longer follow-up are needed to confirm these results.
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Affiliation(s)
- Michele Rigo
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy.
| | - Rosario Mazzola
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Giuseppe Napoli
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Niccolò Giaj-Levra
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Vanessa Figlia
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Luca Nicosia
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Francesco Ricchetti
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | - Davide Tomasini
- Radiation Oncology Department, University of Brescia, Brescia, Italy
| | | | - Francesco Cuccia
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy
| | | | - Filippo Alongi
- Advanced Radiation Oncology Department, Cancer Care Center, IRCCS Sacro Cuore Don Calabria Hospital, Via Don Sempreboni 5, 37034, Verona, Negrar, Italy.,Radiation Oncology Department, University of Brescia, Brescia, Italy
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Ruiqing LMD, Yaqiong LP, Bing MMD, Na LP, Shaobo DMD, Zhiyang CMS, Ye ZMS, Shuaiyang WMS, Lianzhong ZMD. Focal Ablation Therapy for Prostate Cancer: A Literature Review. ADVANCED ULTRASOUND IN DIAGNOSIS AND THERAPY 2020. [DOI: 10.37015/audt.2020.200045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Sadeghi-Goughari M, Jeon S, Kwon HJ. Enhancing Thermal Effect of Focused Ultrasound Therapy Using Gold Nanoparticles. IEEE Trans Nanobioscience 2019; 18:661-668. [PMID: 31449028 DOI: 10.1109/tnb.2019.2937327] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
High intensity focused ultrasound (HIFU) has gained increasing attention as a noninvasive therapeutic method for wide range of biomedical applications from drug delivery to cancer treatment. However, high level of ultrasonic power required for efficient HIFU treatment can cause adverse effects such as damage to surrounding healthy tissues and skin burns. One of the strategies to improve the therapeutic mechanism of HIFU is to use ultrasound absorption agents during the treatment. The objectives of current study are to investigate the feasibility of adopting gold nanoparticles (AuNPs) as ultrasound absorption agents to enhance the HIFU thermal ablation when the NPs were injected locally to the focal region; and to examine the dose effects of AuNPs on both heating and cooling mechanisms of HIFU. To this end, we conducted an experimental study on tissue-mimicking phantoms where AuNPs were injected to the focal region under the guidance of ultrasound imaging. A set of thermal parameters including temperature, specific absorption rate of acoustic energy, and cooling rate were measured to monitor the mechanism of AuNPs-mediated HIFU. The results suggest that both heating and cooling rates of HIFU procedure could be greatly improved by injecting AuNPs, which demonstrates the feasibility of using AuNPs to reduce the level of ultrasonic power from extracorporeal source for HIFU treatment.
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Sengupta S, Balla VK. A review on the use of magnetic fields and ultrasound for non-invasive cancer treatment. J Adv Res 2018; 14:97-111. [PMID: 30109147 PMCID: PMC6090088 DOI: 10.1016/j.jare.2018.06.003] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 12/23/2022] Open
Abstract
Current popular cancer treatment options, include tumor surgery, chemotherapy, and hormonal treatment. These treatments are often associated with some inherent limitations. For instances, tumor surgery is not effective in mitigating metastases; the anticancer drugs used for chemotherapy can quickly spread throughout the body and is ineffective in killing metastatic cancer cells. Therefore, several drug delivery systems (DDS) have been developed to target tumor cells, and release active biomolecule at specific site to eliminate the side effects of anticancer drugs. However, common challenges of DDS used for cancer treatment, include poor site-specific accumulation, difficulties in entering the tumor microenvironment, poor metastases and treatment efficiency. In this context, non-invasive cancer treatment approaches, with or without DDS, involving the use of light, heat, magnetic field, electrical field and ultrasound appears to be very attractive. These approaches can potentially improve treatment efficiency, reduce recovery time, eliminate infections and scar formation. In this review we focus on the effects of magnetic fields and ultrasound on cancer cells and their application for cancer treatment in the presence of drugs or DDS.
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Affiliation(s)
- Somoshree Sengupta
- Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute, 196 Raja S.C. Mullick Road, Kolkata 700032, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Glass and Ceramic Research Institute Campus, 196 Raja S.C. Mullick Road, Kolkata 700032, India
| | - Vamsi K. Balla
- Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute, 196 Raja S.C. Mullick Road, Kolkata 700032, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Glass and Ceramic Research Institute Campus, 196 Raja S.C. Mullick Road, Kolkata 700032, India
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Mauri G, Nicosia L, Xu Z, Di Pietro S, Monfardini L, Bonomo G, Varano GM, Prada F, Della Vigna P, Orsi F. Focused ultrasound: tumour ablation and its potential to enhance immunological therapy to cancer. Br J Radiol 2018; 91:20170641. [PMID: 29168922 PMCID: PMC5965486 DOI: 10.1259/bjr.20170641] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/16/2017] [Accepted: 11/16/2017] [Indexed: 12/27/2022] Open
Abstract
Various kinds of image-guided techniques have been successfully applied in the last years for the treatment of tumours, as alternative to surgical resection. High intensity focused ultrasound (HIFU) is a novel, totally non-invasive, image-guided technique that allows for achieving tissue destruction with the application of focused ultrasound at high intensity. This technique has been successfully applied for the treatment of a large variety of diseases, including oncological and non-oncological diseases. One of the most fascinating aspects of image-guided ablations, and particularly of HIFU, is the reported possibility of determining a sort of stimulation of the immune system, with an unexpected "systemic" response to treatments designed to be "local". In the present article the mechanisms of action of HIFU are described, and the main clinical applications of this technique are reported, with a particular focus on the immune-stimulation process that might originate from tumour ablations.
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Affiliation(s)
- Giovanni Mauri
- Deparmtent of interventional radiology, European istitute of oncology, Milan, Italy
| | - Luca Nicosia
- Postgraduate School of Radiology, Università degli Studi di Milano, Milan, Italy
| | - Zhen Xu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Salvatore Di Pietro
- Postgraduate School of Radiology, Università degli Studi di Milano, Milan, Italy
| | - Lorenzo Monfardini
- Department of Radiology and diagnotic imaging, Poliambulazna di Brescia, Brescia, Italy
| | - Guido Bonomo
- Deparmtent of interventional radiology, European istitute of oncology, Milan, Italy
| | | | | | - Paolo Della Vigna
- Deparmtent of interventional radiology, European istitute of oncology, Milan, Italy
| | - Franco Orsi
- Deparmtent of interventional radiology, European istitute of oncology, Milan, Italy
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Enhanced thermal effect using magnetic nano-particles during high-intensity focused ultrasound. PLoS One 2017; 12:e0175093. [PMID: 28384646 PMCID: PMC5383424 DOI: 10.1371/journal.pone.0175093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 03/20/2017] [Indexed: 01/20/2023] Open
Abstract
Collateral damage and long sonication times occurring during high-intensity focused ultrasound (HIFU) ablation procedures limit clinical advancement. In this reserarch, we investigated whether the use of magnetic nano-particles (mNPs) can reduce the power required to ablate tissue or, for the same power, reduce the duration of the procedure. Tissue-mimicking phantoms containing embedded thermocouples and physiologically acceptable concentrations (0%, 0.0047%, and 0.047%) of mNPs were sonicated at acoustic powers of 5.2 W, 9.2 W, and 14.5 W, for 30 seconds. Lesion volumes were determined for the phantoms with and without mNPs. It was found that with the 0.047% mNP concentration, the power required to obtain a lesion volume of 13 mm3 can be halved, and the time required to achieve a 21 mm3 lesion decreased by a factor of 5. We conclude that mNPs have the potential to reduce damage to healthy tissue, and reduce the procedure time, during tumor ablation using HIFU.
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13
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Park JH, Lim SD, Oh SH, Lee JH, Yeo UC. High-intensity focused ultrasound treatment for skin: ex vivo evaluation. Skin Res Technol 2016; 23:384-391. [PMID: 27868241 DOI: 10.1111/srt.12347] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND/PURPOSE High-intensity focused ultrasound (HIFU) has been used for skin tightening. However, there is a rising concern of irreversible adverse effects. Our aim was to evaluate the depth of thermal injury zone after HIFU energy passes through different condition. MATERIALS AND METHODS To analyze the consistency of the HIFU device, phantom tests were performed. Simulations were performed on ex vivo porcine tissues to estimate the area of the thermal coagulation point (TCP) according to the applied energy and skin condition. The experiment was designed in three orientations: normal direction (from epidermis to fascia), reverse direction (from fascia to epidermis), and normal direction without epidermis. RESULTS The TCP was larger and wider depending on the applied fluence and handpieces (HPs). When we measured TCP in different directions, the measured area in the normal direction was more superficially located than that in the reverse direction. The depth of the TCP in the porcine skin without epidermis was detected at 130% deeper than in skin with an intact epidermis. CONCLUSION The affected area by HIFU is dependent on the skin condition and the characteristics of the HP and applied fluence. Considerations of these factors may be the key to minimize the unwanted adverse effects.
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Affiliation(s)
- J-H Park
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S-D Lim
- Department of Pathology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - S H Oh
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J H Lee
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Medical Device Management & Research, SAIHST, Sungkyunkwan University, Seoul, Korea
| | - U C Yeo
- Jongno S&U Dermatologic Clinic, Seoul, Korea
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Evans KD, Weiss B, Knopp M. High-Intensity Focused Ultrasound (HIFU) for Specific Therapeutic Treatments: A Literature Review. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2016. [DOI: 10.1177/8756479307307268] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A literature review is provided concerning the scientific studies that have been published involving high-intensity focused ultrasound (HIFU) as a therapeutic treatment for tumors of the prostate, uterus, and brain. This is a revival of earlier work that now focuses on targeted therapy with sonography, but the studies that have been conducted vary in their level of evidence and translation to clinical practice. The review arranges the published studies by levels of evidence and provides a meta-analysis of the potential for using HIFU to treat prostate cancer, fibroids, and glioblastomas. Human studies are needed that provide clear levels of frequency, intensity, temperature, and treatment patterns. The bioeffects of sonography play a huge role in the destruction of these tumors as well as the potential to cause collateral damage in the surrounding healthy tissue. The hope is that with continued research, a fusion of technology with HIFU can provide patients with a noninvasive, nonionizing therapy for these lesions.
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Prostate Focused Ultrasound Therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 880:21-41. [PMID: 26486330 DOI: 10.1007/978-3-319-22536-4_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Chaussy C, Thüroff S. High-intensity focused ultrasound in the management of prostate cancer. Expert Rev Med Devices 2014; 7:209-17. [DOI: 10.1586/erd.09.66] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Le Y, Xu X, Li Z, Xu F, Zhao W. A multi-step directional generalized gradient vector flow snake for target tumor segmentation in US-guided high-intensity focused ultrasound ablation. Biomed Signal Process Control 2013. [DOI: 10.1016/j.bspc.2013.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Jiang F, He M, Liu YJ, Wang ZB, Zhang L, Bai J. High intensity focused ultrasound ablation of goat liver in vivo: Pathologic changes of portal vein and the "heat-sink" effect. ULTRASONICS 2013; 53:77-83. [PMID: 22583752 DOI: 10.1016/j.ultras.2012.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 04/08/2012] [Accepted: 04/08/2012] [Indexed: 05/31/2023]
Abstract
The purpose of this study was to evaluate pathological changes of the portal vein (PV) and the effects on main branches of the hepatic PV during HIFU (high-intensity focused ultrasound) sonication when liver tissue adjacent to the main branches of hepatic PV was ablated. Normal liver tissue at 0mm, 5mm, 10mm away from the hepatic portal vein in 50 healthy goats was ablated with magnetic resonance image-guided HIFU (MRgHIFU). MRI showed a non-perfusion region at the target area but did not show any significant changes of the PV immediately after HIFU. The histological examination 1 day after HIFU showed coagulative necrosis at the target area, revealed deep-dyed swelling collagen (CS) fibers and vessel wall fracture (VWF) in the PV adjacent to the target area; however, no CS or VWF was observed in the PV 1 week after HIFU ablation. The energy required to ablate the foci at 0mm was 21% more than that at 10mm from the PV (p<0.05); the energy needed to ablate foci 5mm away from the PV was 10% more than that at 10mm from the PV (p<0.05). We concluded that minor injury of the hepatic portal vein may occur when ablating the adjacent liver tissue, and the acoustic energy deposition is related to the distance to the portal vein.
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Affiliation(s)
- F Jiang
- State Key Laboratory of Ultrasound Engineering in Medicine, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
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Focal therapy in the management of prostate cancer: an emerging approach for localized prostate cancer. Adv Urol 2012; 2012:391437. [PMID: 22593764 PMCID: PMC3347714 DOI: 10.1155/2012/391437] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 02/11/2012] [Accepted: 02/13/2012] [Indexed: 01/30/2023] Open
Abstract
A widespread screening with prostate-specific antigen (PSA) has led increased diagnosis of localized prostate cancer along with a reduction in the proportion of advanced-stage disease at diagnosis. Over the past decade, interest in focal therapy as a less morbid option for the treatment of localized low-risk prostate cancer has recently been renewed due to downward stage migration. Focal therapy stands midway between active surveillance and radical treatments, combining minimal morbidity with cancer control. Several techniques of focal therapy have potential for isolated ablation of a tumor focus with sparing of uninvolved surround tissue demonstrating excellent short-term cancer control and a favorable patient's quality of life. However, to date, tissue ablation has mostly used for near-whole prostate gland ablation without taking advantage of accompanying the technological capabilities. The available ablative technologies include cryotherapy, high-intensity focused ultrasound (HIFU), and vascular-targeted photodynamic therapy (VTP). Despite the interest in focal therapy, this technology has not yet been a well-established procedure nor provided sufficient data, because of the lack of randomized trial comparing the efficacy and morbidity of the standard treatment options. In this paper we briefly summarize the recent data regarding focal therapy for prostate cancer and these new therapeutic modalities.
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Ganzer R, Robertson CN, Ward JF, Brown SCW, Conti GN, Murat FJ, Pasticier G, Rebillard X, Thuroff S, Wieland WF, Blana A. Correlation of prostate-specific antigen nadir and biochemical failure after high-intensity focused ultrasound of localized prostate cancer based on the Stuttgart failure criteria - analysis from the @-Registry. BJU Int 2011; 108:E196-201. [PMID: 21332907 DOI: 10.1111/j.1464-410x.2011.10091.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE •To determine if the prostate-specific antigen (PSA) nadir after high-intensity focused ultrasound (HIFU) can be used as a predictor of the biochemical disease-free survival rate (DFSR). PATIENTS AND METHODS •Patient data were derived from the multicentre-based @-Registry, the largest registry to report outcomes in patients with localized prostate cancer after Ablatherm® HIFU. •PSA level was measured at 3-month intervals. Patients were stratified into four PSA nadir groups: group 1, ≤0.2 ng/mL; group 2, 0.21-0.5 ng/mL; group 3, 0.51-1 ng/mL; and group 4, >1 ng/mL. •Biochemical treatment failure was defined according to the Stuttgart definition (PSA nadir + 1.2 ng/mL) and the Phoenix definition (PSA nadir + 2 ng/mL). •Biopsy was performed at 3-6 months post-HIFU or if a PSA level was recorded that was considered clinically relevant. RESULTS •The present study included 804 patients. Biochemical treatment success rates at 5 years according to the Stuttgart definition for the four PSA nadir sub-groups were as follows: 84, 64, 40 and 30% for groups 1-4, respectively. •The equivalent 5-year biochemical success rates using the Phoenix definition were 94, 74, 66 and 47%, respectively. •Significantly more patients had a negative biopsy in the lowest PSA nadir group than in the other sub-groups (91.6 vs 73.1%; P < 0.001). •The present study is limited by its retrospective nature and variations in clinical practice across participating centres. CONCLUSION •This multicentre analysis confirms that PSA nadir after HIFU predicts biochemical DFSR in a statistically significant manner.
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Affiliation(s)
- Roman Ganzer
- Department of Urology, University of Regensburg, Regensburg, Germany.
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de Senneville BD, Ries M, Bartels LW, Moonen CTW. MRI-Guided High-Intensity Focused Ultrasound Sonication of Liver and Kidney. INTERVENTIONAL MAGNETIC RESONANCE IMAGING 2011. [DOI: 10.1007/174_2011_394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Mougenot C, Köhler MO, Enholm J, Quesson B, Moonen C. Quantification of near-field heating during volumetric MR-HIFU ablation. Med Phys 2010; 38:272-82. [DOI: 10.1118/1.3518083] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ripert T, Azémar MD, Ménard J, Barbe C, Messaoudi R, Bayoud Y, Pierrevelcin J, Duval F, Staerman F. Six years’ experience with high-intensity focused ultrasonography for prostate cancer: oncological outcomes using the new ‘Stuttgart’ definition for biochemical failure. BJU Int 2010; 107:1899-905. [DOI: 10.1111/j.1464-410x.2010.09710.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Blana A, Brown SC, Chaussy C, Conti GN, Eastham JA, Ganzer R, Murat FJ, Pasticier G, Rebillard X, Rewcastle JC, Robertson CN, Thuroff S, Ward JF. High-intensity focused ultrasound for prostate cancer: comparative definitions of biochemical failure. BJU Int 2009; 104:1058-62. [DOI: 10.1111/j.1464-410x.2009.08518.x] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Petrusca L, Salomir R, Brasset L, Chavrier F, Cotton F, Chapelon JY. Sector-switching sonication strategy for accelerated HIFU treatment of prostate cancer: in vitro experimental validation. IEEE Trans Biomed Eng 2009; 57:17-23. [PMID: 19709958 DOI: 10.1109/tbme.2009.2029983] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The study investigates a new sonication strategy with high-intensity focused ultrasound (HIFU), aiming for improvement of the original Ablatherm procedure in the prostate cancer treatment. The currently implemented and clinically used method (defined as reference) uses a single-element transducer, operated with 60% duty cycle. To implement the novel strategy, the active surface was split into two sectors, which can be powered either sequentially (for temporal switching) or simultaneously (equivalent to a single-element transducer). Numerical simulations were used to predict the lesion shape and to determine for the novel strategy the best set of treatment parameters among the 99 explored cases. The same pattern for the focal point trajectory was executed irrespectively to the sector activating mode. The theoretical duty cycle reached 100% for the sector switching strategy. The HIFU device was built MRI compatible, and consisted of two mirror symmetrical sectors operating at 3 MHz, shaped as a truncated spherical cap. The two sonication strategies were experimentally tested on fresh samples of degassed porcine liver, using fast MR thermometry (proton resonance frequency shift method with voxel size 0.85 x 0.85 x 4.25 mm (3), 2 s/dynamic, 0.5 ( degrees ) C temperature accuracy, two orthogonal slices). A practical value of 87.5% overall duty cycle could be experimentally implemented. The performance of the two sonication strategies was comparatively assessed based on: cumulated thermal dose derived from MR temperature maps, postoperatory MR morphological images sensitive to tissue contrast changes (inversion-recovery T1-weighted turbo spin-echo, voxel size 0.5 x 0.5 x 4 mm (3)) and postoperatory macroscopic tissue examination. Using a sector-switching sonication strategy for prostate cancer treatment-induced lesions of similar size and shape as for the reference approach. When considering the available reserve of duty cycle and the exact lesion size, we concluded the treatment time was reduced by 20% with the new sector switching strategy at equal performance. Further in vivo studies are considered mandatory for preclinical validation.
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Affiliation(s)
- Lorena Petrusca
- National Institute for Health and Medical ResearchU556, Lyon 69424, France.
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Abstract
PURPOSE OF REVIEW Prostate cancer screening has shifted the diagnosis of prostate cancer to lower grade, organ confined disease. Radical prostatectomy or radiation therapy has been shown to be overtreatment in 30% of patients. In this review, we will discuss targeted focal therapy (TFT) using the modalities of cryotherapy or high intensity focused ultrasound as an alternate treatment for low-risk prostate cancers. RECENT FINDINGS TFT uses 3-D mapping biopsies to guide treatment so lesions of interest are ablated whereas sparing surrounding healthy tissues, avoiding the side-effects associated with more invasive treatments. In recent years, improvements in cryotherapy and HIFU have increased efficacy whereas decreasing complications. Prostate cancer control reported following TFT is promising. SUMMARY With data demonstrating effective treatment in select patients, physicians can better inform their patients of the options available to eradicate their prostate cancer. TFT provides an alternative to active surveillance and more aggressive treatments for patients with low-risk tumors. As studies mature, more information regarding long-term survival and benefit will become more evident.
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Li LY, Yang M, Gao X, Zhang HB, Li JF, Xu WF, Lin Z, Zhou XL. Prospective comparison of five mediators of the systemic response after high-intensity focused ultrasound and targeted cryoablation for localized prostate cancer. BJU Int 2009; 104:1063-7. [PMID: 19298406 DOI: 10.1111/j.1464-410x.2009.08481.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate whether high-intensity focused ultrasound (HIFU) is less invasive than targeted cryoablation of the prostate (TCAP), as experimental studies suggest that the acute-phase reaction is proportional to surgery-induced tissue damage. PATIENTS AND METHODS Between May 2004 and December 2007, 127 consecutive patients undergoing HIFU (71) or TCAP (56) in our departments were assessed prospectively. Blood samples were collected 24 h before (T0), during surgery (T1), at the end of anaesthesia (T2), and at 12 (T3), 24 (T4) and 36 h after surgery (T5). The extent of the systemic response to surgery-induced tissue trauma was measured by assessing the levels of acute-phase markers tumour necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), IL-10, C-reactive protein (CRP) and serum amyloid A (SAA), at all sampling times in all patients. RESULTS The median (interquartile range) age in the HIFU and TCAP groups was 70 (62-77) and 68 (59-75) years, respectively (P = 0.4). Baseline levels (T0) of TNF-alpha, IL-6, IL-10, CRP and SAA were comparable in both groups. The levels of all four markers increased during both procedures; the median values were higher for TCAP at T2 (P = 0.02, 0.001, <0.001 and 0.06), T3 (P < 0.001, 0.009, 0.003 and 0.001), T4 (P = 0.007, <0.001, 0.005 and <0.001) and T5 (P < 0.001, 0.004, <0.001 and 0.02), respectively. IL-6 was also higher for TCAP at T1 (P = 0.03). IL-10 did not change at the different sampling times. CONCLUSION The tissue trauma and associated invasiveness of HIFU is less than that of TCAP, based on the variables objectively measured in this study.
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Affiliation(s)
- Liao-Yuan Li
- Department of Urology, 3rd Affiliated Hospital, Sun Yat-Sen University, Guangzhou, PR China
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Li Q, Du J, Yu M, He G, Luo W, Li H, Zhou X. Transmission electron microscopy of VX2 liver tumors after high-intensity focused ultrasound ablation enhanced with SonoVue. Adv Ther 2009; 26:117-25. [PMID: 19096769 DOI: 10.1007/s12325-008-0126-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The purpose of this study was to observe sequential changes in rabbit VX2 liver tumors using transmission electron microscopy after high-intensity focused ultrasound (HIFU) ablation enhanced with the contrast agent SonoVuer (Bracco, Milan, Italy). METHODS Thirty New Zealand rabbits with VX2 liver tumors were randomly divided into two groups. The liver tumors of rabbits in Group A underwent single HIFU ablation; those in Group B were given the ultrasound contrast agent SonoVue 0.2 mL/kg before HIFU exposure. Five rabbits from each of the two groups were killed at 0 hours, 6 days, and 14 days after HIFU ablation. Tissue samples that included targeted and untargeted tissue were observed using transmission electron microscopy. RESULTS Using transmission electron microscopy, it was evident that most of the cellular organs in the targeted areas of tumors in Groups A and B had disappeared early after HIFU, but the basic cell structure was seen in Group A. On the sixth day after HIFU ablation, all cells in the targeted areas were disrupted, and fibrous bands were detected in the rims of targeted areas in both groups. In the surrounding areas, cell swelling in Group B was more severe than in Group A, and a greater number of apoptotic bodies were found in Group B. CONCLUSION The use of an ultrasound contrast agent can enhance the effects of HIFU ablation on the destruction of cell ultrastructure and can enlarge the region of HIFU ablation; this provides experimental evidence for the use of contrast agents in controlling the effects of HIFU.
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Affiliation(s)
- Qiuyang Li
- Department of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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Singh V. Ultrasound hyperthermia control system for deep-seated tumours: Ex vivo study of excised tumours, modeling of thermal profile and future nanoengineering aspects. Ing Rech Biomed 2008. [DOI: 10.1016/j.rbmret.2008.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pasticier G, Chapet O, Badet L, Ardiet JM, Poissonnier L, Murat FJ, Martin X, Gelet A. Salvage radiotherapy after high-intensity focused ultrasound for localized prostate cancer: early clinical results. Urology 2008; 72:1305-9. [PMID: 18502487 DOI: 10.1016/j.urology.2008.02.064] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2006] [Revised: 02/24/2008] [Accepted: 02/28/2008] [Indexed: 11/25/2022]
Abstract
OBJECTIVES To evaluate the first results of salvage radiotherapy after high-intensity focused ultrasound (HIFU) in terms of feasibility, tolerance, and oncologic control. METHODS From March 1995 to May 2004, 45 patients presenting with local failure after HIFU underwent salvage radiotherapy alone (n = 32) or combined with hormonal therapy (n = 13). The modalities of radiotherapy are described. Tolerance was evaluated using the Radiation Therapy Oncology Group score for urinary and digestive side effects, and incontinence was evaluated using the Ingelman Sundberg score. Patients answered a questionnaire. For the 32 patients who underwent radiotherapy alone, the oncologic early results were given by the disease-free survival rate, defined as no biochemical progression and no androgen suppression therapy. RESULTS The median and mean follow-up were 40 and 46 months, respectively, for the whole series. No additional digestive or urinary toxicity developed with salvage radiotherapy after HIFU. The data from 32 patients were evaluated, with a median follow-up of 37 months after radiotherapy. The 5-year disease-free survival rate was 64% for the 32 patients evaluated. The 5-year disease-free survival rate reached 80% for patients treated for positive biopsy findings and was 44% for those with isolated biochemical failure. CONCLUSIONS Salvage radiotherapy after HIFU for local recurrence is feasible, with no additional toxicity. The early oncologic results are encouraging when isolated local recurrence is proven but longer follow-up is needed.
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Affiliation(s)
- G Pasticier
- Department of Urology, CHU Pellegrin, Bordeaux, France.
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Détection par IRM des récidives locales du cancer de prostate après traitement par ultrasons focalisés de haute intensité (HIFU) transrectaux : étude préliminaire. ACTA ACUST UNITED AC 2008; 89:571-7. [DOI: 10.1016/s0221-0363(08)71483-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Schmitz AC, Gianfelice D, Daniel BL, Mali WPTM, van den Bosch MAAJ. Image-guided focused ultrasound ablation of breast cancer: current status, challenges, and future directions. Eur Radiol 2008; 18:1431-41. [PMID: 18351348 PMCID: PMC2441491 DOI: 10.1007/s00330-008-0906-0] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Revised: 12/04/2007] [Accepted: 01/15/2008] [Indexed: 01/06/2023]
Abstract
Image-guided focussed ultrasound (FUS) ablation is a non-invasive procedure that has been used for treatment of benign or malignant breast tumours. Image-guidance during ablation is achieved either by using real-time ultrasound (US) or magnetic resonance imaging (MRI). The past decade phase I studies have proven MRI-guided and US-guided FUS ablation of breast cancer to be technically feasible and safe. We provide an overview of studies assessing the efficacy of FUS for breast tumour ablation as measured by percentages of complete tumour necrosis. Successful ablation ranged from 20% to 100%, depending on FUS system type, imaging technique, ablation protocol, and patient selection. Specific issues related to FUS ablation of breast cancer, such as increased treatment time for larger tumours, size of ablation margins, methods used for margin assessment and residual tumour detection after FUS ablation, and impact of FUS ablation on sentinel node procedure are presented. Finally, potential future applications of FUS for breast cancer treatment such as FUS-induced anti-tumour immune response, FUS-mediated gene transfer, and enhanced drug delivery are discussed. Currently, breast-conserving surgery remains the gold standard for breast cancer treatment.
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Affiliation(s)
- A C Schmitz
- Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands
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Chopra R, Baker N, Choy V, Boyes A, Tang K, Bradwell D, Bronskill MJ. MRI-compatible transurethral ultrasound system for the treatment of localized prostate cancer using rotational control. Med Phys 2008; 35:1346-57. [DOI: 10.1118/1.2841937] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Manyonda IT, Gorti M. Commentary: Costing magnetic resonance-guided focused ultrasound surgery, a new treatment for symptomatic fibroids. BJOG 2008; 115:551-3. [DOI: 10.1111/j.1471-0528.2007.01656.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Maleke C, Konofagou EE. Harmonic motion imaging for focused ultrasound (HMIFU): a fully integrated technique for sonication and monitoring of thermal ablation in tissues. Phys Med Biol 2008; 53:1773-93. [PMID: 18367802 DOI: 10.1088/0031-9155/53/6/018] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
FUS (focused ultrasound), or HIFU (high-intensity-focused ultrasound) therapy, a minimally or non-invasive procedure that uses ultrasound to generate thermal necrosis, has been proven successful in several clinical applications. This paper discusses a method for monitoring thermal treatment at different sonication durations (10 s, 20 s and 30 s) using the amplitude-modulated (AM) harmonic motion imaging for focused ultrasound (HMIFU) technique in bovine liver samples in vitro. The feasibility of HMI for characterizing mechanical tissue properties has previously been demonstrated. Here, a confocal transducer, combining a 4.68 MHz therapy (FUS) and a 7.5 MHz diagnostic (pulse-echo) transducer, was used. The therapy transducer was driven by a low-frequency AM continuous signal at 25 Hz, producing a stable harmonic radiation force oscillating at the modulation frequency. A pulser/receiver was used to drive the pulse-echo transducer at a pulse repetition frequency (PRF) of 5.4 kHz. Radio-frequency (RF) signals were acquired using a standard pulse-echo technique. The temperature near the ablation region was simultaneously monitored. Both RF signals and temperature measurements were obtained before, during and after sonication. The resulting axial tissue displacement was estimated using one-dimensional cross correlation. When temperature at the focal zone was above 48 degrees C during heating, the coagulation necrosis occurred and tissue damage was irreversible. The HMI displacement profiles in relation to the temperature and sonication durations were analyzed. At the beginning of heating, the temperature at the focus increased sharply, while the tissue stiffness decreased resulting in higher HMI displacements. This was confirmed by an increase of 0.8 microm degrees C(-1)(r=0.93, p<.005). After sustained heating, the tissue became irreversibly stiffer, followed by an associated decrease in the HMI displacement (-0.79 microm degrees C(-1), r=-0.92, p<0.001). Repeated experiments showed a reproducible pattern of the HMI displacement changes with a temperature at a slope equal to 0.8+/-0.11 and -0.79+/-0.14 microm degrees C(-1), prior to and after lesion formation in seven bovine liver samples, respectively. This technique was thus capable of following the protein-denatured lesion formation based on the variation of the HMI displacements. This method could, therefore, be applied for real-time monitoring of temperature-related stiffness changes of tissues during FUS, HIFU or other thermal therapies.
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Affiliation(s)
- C Maleke
- Department of Biomedical Engineering, Columbia University, New York, NY, USA.
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Abstract
In this article the current issues of diagnosis and detection of prostate cancer are reviewed. The limitations for current techniques are highlighted and some possible solutions with MR imaging and MR-guided biopsy approaches are reviewed. There are several different biopsy approaches under investigation. These include transperineal open magnet approaches to closed-bore 1.5T transrectal biopsies. The imaging, image processing, and tracking methods are also discussed. In the arena of therapy, MR guidance has been used in conjunction with radiation methods, either brachytherapy or external delivery. The principles of the radiation treatment, the toxicities, and use of images are outlined. The future role of imaging and image-guided interventions lie with providing a noninvasive surrogate for cancer surveillance or monitoring treatment response. The shift to minimally invasive focal therapies has already begun and will be very exciting when MR-guided focused ultrasound surgery reaches its full potential.
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Affiliation(s)
- Clare Tempany
- Department of Radiology, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Fennessy FM, Tuncali K, Morrison PR, Tempany CM. MR imaging-guided interventions in the genitourinary tract: an evolving concept. Radiol Clin North Am 2008; 46:149-66, vii. [PMID: 18328885 PMCID: PMC3403748 DOI: 10.1016/j.rcl.2008.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
MR imaging-guided interventions are well established in routine patient care in many parts of the world. There are many approaches, depending on magnet design and clinical need, based on MR imaging providing excellent inherent tissue contrast without ionizing radiation risk for patients. MR imaging-guided minimally invasive therapeutic procedures have advantages over conventional surgical procedures. In the genitourinary tract, MR imaging guidance has a role in tumor detection, localization, and staging and can provide accurate image guidance for minimally invasive procedures. The advent of molecular and metabolic imaging and use of higher strength magnets likely will improve diagnostic accuracy and allow targeted therapy to maximize disease control and minimize side effects.
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Affiliation(s)
- Fiona M Fennessy
- Department of Radiology, Harvard Medical School/Brigham and Women's Hospital, Boston, MA 02115, USA.
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Indications, techniques et résultats du traitement par ultrasons focalisés (HIFU) du cancer localisé de la prostate. ACTA ACUST UNITED AC 2007; 41:237-53. [DOI: 10.1016/j.anuro.2007.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Paparel P, Chapelon JY, Bissery A, Chesnais S, Curiel L, Gelet A. Influence of the docetaxel administration period (neoadjuvant or concomitant) in relation to HIFU treatment on the growth of Dunning tumors: results of a preliminary study. Prostate Cancer Prostatic Dis 2007; 11:181-6. [PMID: 17710106 DOI: 10.1038/sj.pcan.4501005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The objective of this study was to evaluate mechanisms of the synergy between high intensity-focused ultrasound (HIFU) and docetaxel and to determine the best sequence of chemotherapy administration in relation to HIFU treatment for obtaining optimum control of tumoral growth. A total of 15 days after s.c. implantation of the tumor, 52 Copenhagen rats studied were randomized in 4 groups of 13: controls, docetaxel alone (group 1), HIFU and docetaxel concomitant (group 2) and HIFU and docetaxel administered 24 h before treatment (group 3). The number of HIFU shots was calculated in order to cover 75% of the tumor volume. The effects of docetaxel, HIFU and their interaction on tumor volumes were analyzed using a linear regression. The distributions of the tumor volumes were significantly greater in the control group than in the group 1 (P=0.002) and than in both groups 2 and 3 (P < 0.0001 and P = 0.0001). These volumes were also significantly greater in group 1 than in both groups 2 and 3 and there was no difference between the groups 2 and 3. The tumor doubling times were 7.8 days for the group 1, 43.8 days for the group 2, 16.1 days for the group 3 and 5.9 days for the controls. The mechanism of the synergy between HIFU and docetaxel on the growth of Dunning tumors is apparently multifaceted. The results are encouraging because in the two groups of rats treated with the combination of HIFU and docetaxel, the percentage of complete remission was approximately 30%.
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Affiliation(s)
- P Paparel
- Department of Urology, Lyon Sud Hospital, Pierre Bénite, France.
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Pauly KB, Diederich CJ, Rieke V, Bouley D, Chen J, Nau WH, Ross AB, Kinsey AM, Sommer G. Magnetic resonance-guided high-intensity ultrasound ablation of the prostate. Top Magn Reson Imaging 2007; 17:195-207. [PMID: 17414077 DOI: 10.1097/rmr.0b013e31803774dd] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVES This paper describes our work in developing techniques and devices for magnetic resonance (MR)-guided high-intensity ultrasound ablation of the prostate and includes review of relevant literature. METHODS Catheter-based high-intensity ultrasound applicators, in interstitial and transurethral configurations, were developed to be used under MR guidance. Magnetic resonance thermometry and the relevant characteristics and artifacts were evaluated during in vivo thermal ablation of the prostate in 10 animals. Contrast-enhanced MR imaging (MRI) and diffusion-weighted MRI were used to assess tissue damage and compared with histology. RESULTS During evaluation of these applicators, MR thermometry was used to monitor the temperature distributions in the prostate in real time. Magnetic resonance-derived maximum temperature thresholds of 52 degrees C and thermal dose thresholds of 240 minutes were used to control the extent of treatment and qualitatively correlated well with posttreatment imaging studies and histology. The directional transurethral devices are selective in their ability to target well-defined regions of the prostate gland and can be rotated in discrete steps to conform treatment to prescribed boundaries. The curvilinear applicator is the most precise of these directional techniques. Multisectored transurethral applicators, with dynamic angular control of heating and no rotation requirements, offer a fast and less complex means of treatment with less selective contouring. CONCLUSIONS The catheter-based ultrasound devices can produce spatially selective regions of thermal destruction in prostate. The MR thermal imaging and thermal dose maps, obtained in multiple slices through the target volume, are useful for controlling therapy delivery (rotation, power levels, duration). Contrast-enhanced T1-weighted MRI and diffusion-weighted imaging are useful tools for assessing treatment.
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Affiliation(s)
- Kim Butts Pauly
- Department of Radiology, Stanford University, Stanford, CA 94305-5488, USA.
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Fennessy FM, Tempany CM. A review of magnetic resonance imaging-guided focused ultrasound surgery of uterine fibroids. Top Magn Reson Imaging 2007; 17:173-9. [PMID: 17414074 DOI: 10.1097/rmr.0b013e3180337e1f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Uterine fibroids are a significant cause of morbidity for women of reproductive age. Over the past decade, minimally invasive treatment options are becoming increasingly popular. A new, Food and Drug Administration-approved noninvasive treatment option is magnetic resonance-guided focused ultrasound surgery, which has the potential to become a treatment of choice for selected patients. We review the technical aspects of the procedure of magnetic resonance-guided focused ultrasound surgery for treatment of uterine fibroids, potential difficulties with treatment planning, and clinical trial results to date. We also describe current developments in treatment imaging and treatment optimization.
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Affiliation(s)
- Fiona M Fennessy
- Department of Radiology, Brigham and Women's Hospital, Boston, MA 02115, USA.
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46
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Cryoablation and High-Intensity Focused Ultrasound. Prostate Cancer 2007. [DOI: 10.1007/978-3-540-40901-4_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Luo W, Zhou X, Ren X, Zheng M, Zhang J, He G. Enhancing effects of SonoVue, a microbubble sonographic contrast agent, on high-intensity focused ultrasound ablation in rabbit livers in vivo. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2007; 26:469-76. [PMID: 17384044 DOI: 10.7863/jum.2007.26.4.469] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
OBJECTIVE The purpose of this study was to explore the enhancing biological effects of SonoVue (Bracco SpA, Milan, Italy), a sulfur hexafluoride sonographic contrast agent, on high-intensity focused ultrasound (HIFU) ablation in vivo. METHODS Forty-five rabbits were randomly divided into 3 groups and underwent laparotomy. Animals in group 1 were given injections of 0.2 mL of SonoVue intravenously; animals in group 2 were given physiologic saline; and those in group 3 were not given injections as control. The exposure time was set at 2 seconds with the acoustic power at 600 W. After HIFU ablations, volumes of coagulated regions were measured. Liver tissues were examined under light microscopy with hematoxylin-eosin staining and under transmission electron microscopy. RESULTS Coagulated volumes in group 1 (mean +/- SD, 2.41 +/- 0.44 cm(3)) were larger than those in group 2 (0.80 +/- 0.13 cm(3)) and group 3 (0.83 +/- 0.16 cm(3)) (P < .05). Separated from the surrounding area with a clear demarcation line, the targeted area in each group showed a few necrotic cells on light microscopy with the hematoxylin-eosin stain. More bubbles were observed under light microscopy in exposed areas in group 1 than in the other 2 groups (P < .05). Electron microscopy showed more severe cell ultrastructure disorder, including more interrupted cell nuclear membranes, in targeted areas in group 1 than in the other 2 groups. Conversely, in all the groups, untreated areas were not affected. CONCLUSIONS SonoVue can substantially enhance the ablation effects of HIFU, suggesting that microbubble contrast agents may be useful for improving HIFU efficiency.
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Affiliation(s)
- Wen Luo
- Department of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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48
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Poissonnier L, Chapelon JY, Rouvière O, Curiel L, Bouvier R, Martin X, Dubernard JM, Gelet A. Control of prostate cancer by transrectal HIFU in 227 patients. Eur Urol 2007; 51:381-7. [PMID: 16857310 DOI: 10.1016/j.eururo.2006.04.012] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Accepted: 04/18/2006] [Indexed: 12/30/2022]
Abstract
PURPOSE To evaluate the results of high-intensity focused ultrasound (HIFU) treatment of localized prostate cancer with reference to disease-related prognostic factors. MATERIALS AND METHODS Patients with T1-2 localized prostate cancers, prostate specific antigen (PSA) <or=15 ng/ml, Gleason score <or=7, prostate volume <or=40 cc and no previous radical treatment for prostate cancer were treated with the Ablatherm HIFU device. Follow-up included PSA measurements, and prostate biopsies 3 months after HIFU and in cases of rising PSA. Failure was defined as any positive biopsy or a PSA >1 ng/ml with three consecutive rises. RESULTS The study included 227 patients. Mean follow-up was 27+/-20 months (12-121 months). Eighty-six percent had negative control biopsies. Median nadir PSA was 0.10 ng/ml. The actuarial 5-year disease-free survival rate (DFSR), combining pathologic and biochemical outcomes, was 66%. DFSR showed a significant decrease when stratified according to initial PSA level: 90% with PSA <or=4 ng/ml versus 57% and 61% with PSA between 4.1 and 10, and between 10.1 and 15 ng/ml, respectively. Incontinence and bladder neck stricture decreased with the treatment procedure standardization from 28% and 31% to 9% and 6%, respectively. CONCLUSIONS HIFU for localized prostate cancer offered high control of local disease with low morbidity. The ability to repeat the HIFU treatment is of major interest.
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Affiliation(s)
- Laura Poissonnier
- Urology, Radiology and Pathology Department, Edouard Herriot Hospital, Lyon, France
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49
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Luo W, Zhou X, Tian X, Ren X, Zheng M, Gu K, He G. Enhancement of ultrasound contrast agent in high-intensity focused ultrasound ablation. Adv Ther 2006; 23:861-8. [PMID: 17276954 DOI: 10.1007/bf02850207] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
High-intensity focused ultrasound (HIFU) is becoming an increasingly attractive modality for ablation. Enhancement of HIFU is an important issue that has been discussed and investigated worldwide. Ultrasound contrast agents are considered to constitute an efficient medium for changing acoustic characteristics and improving energy deposition in the focal region. The role of microbubbles in inducing enhanced heating, cavitation, and other related events in HIFU ablation has been investigated, with the goal of improving coagulation necrosis volume or decreasing acoustic power and exposure duration. Consequently, with the use of ultrasound contrast agents, applications of HIFU are expected to become more efficient, safe, and accurate and to produce fewer adverse effects. This paper reviews studies that have been conducted to investigate the enhancement of ultrasound contrast agents in HIFU ablation through experiments that were carried out in vitro and in vivo; an analysis of results of this enhancement mechanism is provided.
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Affiliation(s)
- Wen Luo
- Department of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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50
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Rouvière O, Mège-Lechevallier F, Chapelon JY, Gelet A, Bouvier R, Boutitie F, Lyonnet D. Evaluation of Color Doppler in Guiding Prostate Biopsy after HIFU Ablation. Eur Urol 2006; 50:490-7. [PMID: 16439055 DOI: 10.1016/j.eururo.2005.12.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2005] [Revised: 12/07/2005] [Accepted: 12/13/2005] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Transrectal ultrasound cannot accurately depict early cancer recurrences after prostate high-intensity focused ultrasound (HIFU) ablation. We evaluated transrectal color Doppler (CD) in guiding post-HIFU prostate biopsy. METHODS Prostate CD-guided sextant biopsies were obtained in 82 patients who had undergone prostate HIFU ablation for cancer, 24 of whom had hormone therapy before the treatment. At the time of biopsy, a subjective CD score was given to all biopsy sites (0=no flow; 1=minimal flow; 2=suspicious flow pattern). CD findings were compared with biopsy results. RESULTS CD was a significant predictor of biopsy findings, according to univariate and multivariate site-by-site analysis. However, only 36 of 94 sites with residual cancer had positive CD findings, and thus, negative CD findings should not preclude random biopsy. There was a significant interaction between CD diagnostic capability and a history of hormone therapy before HIFU treatment. CD was a significant and independent predictor of biopsy findings in patients who had not received hormone therapy (odds ratio: 4.4; 95%CI: 2.5-7.9; p<0.0001), but not in those who had (odds ratio: 1.3; 95%CI: 0.5-3.4; p>0.5). CONCLUSION Biopsy taken in CD-positive sites were 4.4 times more likely to contain cancer in patients who did not receive hormone therapy. CD could not reliably depict cancer recurrence in patients with history of hormone therapy.
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Affiliation(s)
- Olivier Rouvière
- Department of Genitourinary Radiology, Pavillon P Radio, Hôpital E. Herriot, 5 place d'Arsonval, 69437 Lyon Cedex 03, France.
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