Littérature scientifique sur le sujet « HIFU transducer »
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Articles de revues sur le sujet "HIFU transducer"
Shin, Eui-Ji, Byungwoo Kang et Jin Chang. « Real-Time HIFU Treatment Monitoring Using Pulse Inversion Ultrasonic Imaging ». Applied Sciences 8, no 11 (11 novembre 2018) : 2219. http://dx.doi.org/10.3390/app8112219.
Texte intégralLiu, Li, et Jian Sun. « A Study of High Intensity Focusing Ultrasonic Transducer ». Applied Mechanics and Materials 201-202 (octobre 2012) : 20–23. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.20.
Texte intégralShan, Feng, Xiasheng Guo, Juan Tu, Jianchun Cheng et Dong Zhang. « Multi-relaxation-time lattice Boltzmann modeling of the acoustic field generated by focused transducer ». International Journal of Modern Physics C 28, no 03 (mars 2017) : 1750038. http://dx.doi.org/10.1142/s0129183117500383.
Texte intégralBui, Ngoc Thang, Thi My Tien Nguyen, Gebremedhin Yonatan Ataklti, Quoc Cuong Bui, Tran Thanh Nam Dinh, Duc Tri Phan, Sumin Park, Jaeyeop Choi, Thi Thu Ha Vu et Junghwan Oh. « Design of a High-Power Multilevel Sinusoidal Signal and High-Frequency Excitation Module Based on FPGA for HIFU Systems ». Electronics 10, no 11 (29 mai 2021) : 1299. http://dx.doi.org/10.3390/electronics10111299.
Texte intégralCato, Sharon, Florent Aptel, Philippe Denis, Gail ter Haar, Shlomo Melamed, Eric Sellem, Tarek Shaarawy et David Wright. « Ultrasound Circular Cyclo-Coagulation – Innovation in Glaucoma with High Intensity Focused Ultrasound ». European Ophthalmic Review 05, no 02 (2011) : 109. http://dx.doi.org/10.17925/eor.2011.05.02.109.
Texte intégralSeo, Hyunkwan, Sung Kwan Hwang, Hee-Won Kim et Kyu Chan Lee. « Motion Accuracy of Pneumatic Stepper Motor-Driven Robotic System Developed for MRI-Guided High-Intensity Focused Ultrasound Treatment of Prostate Disease ». Applied Bionics and Biomechanics 2024 (10 mai 2024) : 1–13. http://dx.doi.org/10.1155/2024/5556537.
Texte intégralLim, Hae Gyun, Hyunhee Kim, Kyungmin Kim, Jeongwoo Park, Yeonggeun Kim, Jinhee Yoo, Dasom Heo, Jinhwan Baik, Sung-Min Park et Hyung Ham Kim. « Thermal Ablation and High-Resolution Imaging Using a Back-to-Back (BTB) Dual-Mode Ultrasonic Transducer : In Vivo Results ». Sensors 21, no 5 (24 février 2021) : 1580. http://dx.doi.org/10.3390/s21051580.
Texte intégralQian, Jun, Wei Xie, Xiao-Wei Zhou, Jian-Wen Tan, Zhi-Biao Wang, Yong-Hong Du et Yan-Hao Li. « Real-time monitoring of high intensity focused ultrasound focal damage based on transducer driving signal ». Acta Physica Sinica 71, no 3 (2022) : 037201. http://dx.doi.org/10.7498/aps.71.20211443.
Texte intégralAn, Chih Yu, Jia Hao Syu, Ching Shiow Tseng et Chih-Ju Chang. « An Ultrasound Imaging-Guided Robotic HIFU Ablation Experimental System and Accuracy Evaluations ». Applied Bionics and Biomechanics 2017 (2017) : 1–8. http://dx.doi.org/10.1155/2017/5868695.
Texte intégralKaczkowski, Peter, et Juvenal Ormachea. « The verasonics platform for ultrasound-guided focused ultrasound preclinical studies ». Journal of the Acoustical Society of America 153, no 3_supplement (1 mars 2023) : A101. http://dx.doi.org/10.1121/10.0018303.
Texte intégralThèses sur le sujet "HIFU transducer"
Gelat, P. N. « Focusing the field of a HIFU array transducer through human ribs ». Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1428445/.
Texte intégralHARIHARAN, PRASANNA. « Free field characterization of High Intensity Focused Ultrasound (HIFU) transducers using acoustic streaming ». University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204570105.
Texte intégralDasgupta, Subhashish. « Improved Characterization of the High Intensity Focused Ultrasound (HIFU) induced Thermal Field ». University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1275936679.
Texte intégralSanchez, Marine. « Développement d’un transducteur torique extracorporel et du principe de focalisation multi-torique en vue du traitement des adénocarcinomes mammaires par ultrasons focalisés de haute intensité ». Electronic Thesis or Diss., Lyon, 2020. http://www.theses.fr/2020LYSE1243.
Texte intégralHigh Intensity Focused Ultrasound (HIFU) is a technique commonly used in the medical field for the treatment of solid tumors. This therapeutic strategy allows for the localized destruction of biological tissue by temperature elevation. This manuscript describes the design and utilization of a therapeutic system and a novel, patented focalization technique for non-invasive treatment of mammary adenocarcinomas. In a first instance, an existing device that has been previously used for intraoperative treatment of hepatic metastases, and one that is currently undergoing clinical trials, was used. An ex vivo study on human mammary samples demonstrated the possibility of applying pressures on deep tissue layers in a non-invasive manner. Based on this study, the development of a new focalization modality was developed to provide larger treated volumes while yielding treatment times under a minute and eliminating the need for mechanical steering of the device. This new modality provided treated volumes 30% larger than those produced by the existing device with no changes to treatment time. Given the limitations of the existing device, in addition to the need of integrating the new focalization strategy, a new device was designed and specifically fabricated to meet the demands for treating mammary adenocarcinomas. The natural focalization of this novel transducer allows for depositing pressure deep in tissue. When the new focalization modality is used, a larger pressure field produces increased treated volumes. The performance provided by the novel probe was first characterized through modeling studies. These results were then validated through preliminary in vitro studies on hepatic tissues as well as in ex vivo studies on human mammary tissue samples. This work represents the first stage of development of a HIFU treatment for mammary adenocarcinomas using a novel, non-invasive and image-guided HIFU device that can be used manually
Vincenot, Jérémy. « Transducteurs toriques peropératoires et extracorporels destinés au traitement des tumeurs hépatiques et pancréatiques par ultrasons focalisés de haute intensité ». Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10161.
Texte intégralHigh intensity focused ultrasound (HIFU) allows the destruction of biological tissue by temperature increase. This technique is commonly used in the medical world for treating certain types of tumor masses. The project described in this document details the development and use of two independent therapy systems, with the main objective to treat intraoperatively and extracorporeally liver tumors. As a first step, an existing surgical system, intended to treat liver metastases and under clinical evaluation, was used. The establishment of a treatment modality based on electronic focusing has contributed to increase the coagulation volume and thus simplify the operative procedure. Based upon the findings of this first study, a second version of intraoperative probe was modeled and developed. The geometry of this new transducer allowed to change the shape of produced ablations. The performance of this probe were evaluated numerically and then validated with in vitro and in vivo studies. The effectiveness, simplicity and reproducibility of the treatments performed in the liver led to a possible application of the device to pancreatic cancer. After numerical study and in vitro feasibility assessment, animal model validation was also undertaken. All the results obtained during the peroperative treatments was used to study the feasibility of an extracorporeal treatment. A theoretical study has led to the development of an experimental prototype. After calibration, preliminary in vitro results were obtained
Vincenot, Jérémy. « Transducteurs toriques peropératoires et extracorporels destinés au traitement des tumeurs hépatiques et pancréatiques par ultrasons focalisés de haute intensité ». Electronic Thesis or Diss., Lyon 1, 2013. http://www.theses.fr/2013LYO10161.
Texte intégralHigh intensity focused ultrasound (HIFU) allows the destruction of biological tissue by temperature increase. This technique is commonly used in the medical world for treating certain types of tumor masses. The project described in this document details the development and use of two independent therapy systems, with the main objective to treat intraoperatively and extracorporeally liver tumors. As a first step, an existing surgical system, intended to treat liver metastases and under clinical evaluation, was used. The establishment of a treatment modality based on electronic focusing has contributed to increase the coagulation volume and thus simplify the operative procedure. Based upon the findings of this first study, a second version of intraoperative probe was modeled and developed. The geometry of this new transducer allowed to change the shape of produced ablations. The performance of this probe were evaluated numerically and then validated with in vitro and in vivo studies. The effectiveness, simplicity and reproducibility of the treatments performed in the liver led to a possible application of the device to pancreatic cancer. After numerical study and in vitro feasibility assessment, animal model validation was also undertaken. All the results obtained during the peroperative treatments was used to study the feasibility of an extracorporeal treatment. A theoretical study has led to the development of an experimental prototype. After calibration, preliminary in vitro results were obtained
Cambronero, Sophie. « Développement d’un traitement non invasif des tumeurs hépatiques par ultrasons focalisés ». Electronic Thesis or Diss., Lyon 1, 2022. http://www.theses.fr/2022LYO10234.
Texte intégralHigh-intensity focused ultrasound (HIFU) is a non-invasive treatment modality for solid tumors that provides a localized destruction of deep tissues. The work in this manuscript describes the development of treatment strategies and the design of a toroidal HIFU transducer dedicated to the non-invasive treatment of liver tumors. First, an existing toroidal HIFU device designed for an intraoperative treatment of liver tumors was used to expand the prospects for intraoperative treatment of tumors localized at the hepato-caval confluence. This treatment approach was evaluated in a preclinical study and showed the feasibility of the procedure and the tolerance of the treatment. This same device was then used to evaluate the feasibility of a completely non-invasive HIFU treatment with a toroidal transducer. The feasibility and safety of this non-invasive treatment was demonstrated in a preclinical study in the porcine model. This work highlighted the need for personalized non-invasive HIFU treatments to spare healthy intermediate tissues. Based on these experiences, a new targeting system was developed to ensure an accurate targeting of non-invasive HIFU treatments performed near risky structures. The performance of the new system has been demonstrated on two in vivo protocols for the treatment of the TTTS (Twin to Twin Transfusion Syndrome) and bladder trigone tumors. A new HIFU treatment device was then designed and developed for the non-invasive treatment of liver tumors. The specific cut of this truncated toroidal transducer allows an enlargement of the treated volume without mechanical displacement of the transducer. The therapeutic performance of this device has been evaluated on in vitro and in vivo experiments in the porcine model. This work represents the first step of a non-invasive treatment of hepatic tumors with a toroidal HIFU transducer
Dibaji, Seyed Ahmad Reza. « Nonlinear Derating of High Intensity Therapeutic Ultrasound Beams using Decomposition of Gaussian Mode ». University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458900246.
Texte intégralMasárová, Mária. « Evoluční návrh ultrazvukových operačních plánů ». Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445547.
Texte intégralWang, Xusheng. « Ultrasonic Generator for Surgical Applications and Non-invasive Cancer Treatment by High Intensity Focused Ultrasound ». Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS052/document.
Texte intégralHigh intensity focused ultrasound (HIFU) technology is now broadly used for cancer treatment, thanks to its non-invasive property. In a HIFU system, a phased array of ultrasonic transducers is utilized to generate a focused beam of ultrasound (1M~10MHz) into a small area of the cancer target within the body. Most HIFU systems are guided by magnetic resonance imaging (MRI) in nowadays. In this PhD study, a half-bridge class D power amplifier and an automatic impedance tuning system are proposed. Both the class D power amplifier and the auto-tuning system are compatible with MRI system. The proposed power amplifier is implemented by a printed circuit board (PCB) circuit with discrete components. According to the test results, it has a power efficiency of 82% designed for an output power of 3W at 1.25 MHz working frequency. The proposed automatic impedance tuning system has been designed in two versions: a PCB version and an integrated circuit (IC) version. Unlike the typical auto-impedance tuning networks, there is no need of microprogrammed control unit (MCU) or computer in the proposed design. Besides, without using bulky magnetic components, this auto-tuning system is completely compatible with MRI equipment. The PCB version was designed to verify the principle of the proposed automatic impedance tuning system, and it is also used to help the design of the integrated circuit. The PCB realization occupies a surface of 110cm². The test results confirmed the expected performance. The proposed auto-tuning system can perfectly cancel the imaginary impedance of the transducer, and it can also compensate the impedance drifting caused by unavoidable variations (temperature variation, technical dispersion, etc.). The IC design of the auto-tuning system is realized in a CMOS process (C35B4C3) provided by Austrian Micro Systems (AMS). The die area of the integrated circuit is only 0.42mm². This circuit design can provide a wide working frequency range while keeping a very low power consumption (137 mW). According to the simulation results, the power efficiency can be improved can up to 20% by using this auto-tuning circuit compared with that using the static tuning network
Chapitres de livres sur le sujet "HIFU transducer"
García-López, Juan Carlos, Raquel Martínez-Valdez, Citlalli J. Trujillo-Romero, Arturo Vera et Lorenzo Leija. « Frequency Parametric Study for a HIFU Transducer Intended for Bone Tumor Treatment ». Dans IFMBE Proceedings, 1253–60. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30648-9_162.
Texte intégralRybyanets, A. N., A. A. Naumenko, N. A. Shvetsova, V. A. Khokhlova, O. A. Sapozhnikov et A. E. Berkovich. « Theoretical Modeling and Experimental Study of HIFU Transducers and Acoustic Fields ». Dans Springer Proceedings in Physics, 621–37. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-26324-3_44.
Texte intégralActes de conférences sur le sujet "HIFU transducer"
Park, Chan Yuk, Da Sol Kwon, Jin Ho Sung et Jong Seob Jeong. « High Intensity Focused Ultrasound Transducer Using Inversion Layer Technique for Ultrasound Therapy ». Dans 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3369.
Texte intégralJungsoon Kim, Moojoon Kim et Kanglyeol Ha. « HIFU transducer with controllable curvature ». Dans 2013 IEEE International Ultrasonics Symposium (IUS). IEEE, 2013. http://dx.doi.org/10.1109/ultsym.2013.0290.
Texte intégralRivens, Ian. « A Phased Strip Array HIFU Transducer ». Dans THERAPEUTIC ULTRASOUND : 5th International Symposium on Therapeutic Ultrasound. AIP, 2006. http://dx.doi.org/10.1063/1.2205510.
Texte intégralFleury, Gérard. « Safety Issues for HIFU Transducer Design ». Dans 4TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND. AIP, 2005. http://dx.doi.org/10.1063/1.1901645.
Texte intégralMelodelima, David, William A. N'Djin, Hubert Parmentier, Michel Rivoire et Jean-Yves Chapelon. « Toric HIFU Transducer for Large Thermal Ablation ». Dans 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2007. http://dx.doi.org/10.1109/iembs.2007.4352265.
Texte intégralDibaji, Seyed Ahmad Reza, et Rupak K. Banerjee. « Influence of the Transducer Acoustic Power on Focal Location of the Beam During HIFU Ablation Procedure ». Dans ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80830.
Texte intégralWong, Wai, Carlos Christoffersen, Samuel Pichardo et Laura Curiel. « An integrated ultrasound transducer driver for HIFU applications ». Dans 2013 26th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE). IEEE, 2013. http://dx.doi.org/10.1109/ccece.2013.6567791.
Texte intégralHoward, Samuel M., et Claudio I. Zanelli. « HIFU Transducer Characterization Using a Robust Needle Hydrophone ». Dans 6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND. AIP, 2007. http://dx.doi.org/10.1063/1.2744244.
Texte intégralChristoffersen, Carlos, Thinh Ngo, Ruiqi Song, Yushi Zhou, Samuel Pichardo et Laura Curiel. « Quasi Class-DE Driving of HIFU Transducer Arrays ». Dans 2020 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2020. http://dx.doi.org/10.1109/iscas45731.2020.9180423.
Texte intégralN’Djin, W. A., D. Melodelima, F. Schenone, M. Rivoire, J. Y. Chapelon, Kullervo Hynynen et Jacques Souquet. « Segmental liver resection assisted by HIFU : tissue precauterization using a toroidal-shaped HIFU transducer ». Dans 9TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND : ISTU—2009. AIP, 2010. http://dx.doi.org/10.1063/1.3367204.
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