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Статті в журналах з теми "HiFUN simulations"
Yadav, Sumit Kumar, Souradip Paul, and Mayanglambam Suheshkumar Singh. "Effect of HIFU-Induced Thermal Ablation in Numerical Breast Phantom." Photonics 10, no. 4 (April 9, 2023): 425. http://dx.doi.org/10.3390/photonics10040425.
Повний текст джерелаTreweek, Benjamin C., Jacob H. Brody, Alper Erturk, S. H. Swift, Chandler Smith, Cameron A. McCormick, Timothy Walsh, and Nathan W. Moore. "Large-scale simulation of high-intensity focused ultrasound with Sierra/SD." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A271. http://dx.doi.org/10.1121/10.0018815.
Повний текст джерелаSUZUKI, Katsuyuki, Daiji Fujii, and Hideomi OHTSUBO. "HIFU Simulation using Voxel Analysis." Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME 2003.15 (2003): 153–54. http://dx.doi.org/10.1299/jsmebio.2003.15.153.
Повний текст джерелаLEE, KANG IL, IMBO SIM, GWAN SUK KANG, and MIN JOO CHOI. "NUMERICAL SIMULATION OF TEMPERATURE ELEVATION IN SOFT TISSUE BY HIGH INTENSITY FOCUSED ULTRASOUND." Modern Physics Letters B 22, no. 11 (May 10, 2008): 803–7. http://dx.doi.org/10.1142/s0217984908015413.
Повний текст джерелаShan, Feng, Xiasheng Guo, Juan Tu, Jianchun Cheng, and 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 (March 2017): 1750038. http://dx.doi.org/10.1142/s0129183117500383.
Повний текст джерелаFarbin, Grace. "A preliminary numerical investigation of convolutional neural network (CNN) techniques for filtering high-intensity focused ultrasound (HIFU) noise in images." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A350. http://dx.doi.org/10.1121/10.0019119.
Повний текст джерелаTan, Qiaolai, Xiao Zou, Yajun Ding, Xinmin Zhao, and Shengyou Qian. "The Influence of Dynamic Tissue Properties on HIFU Hyperthermia: A Numerical Simulation Study." Applied Sciences 8, no. 10 (October 16, 2018): 1933. http://dx.doi.org/10.3390/app8101933.
Повний текст джерелаZhao, Peng, Yuebing Wang, Shiqi Tong, Jie Tao, and Yongjie Sheng. "The Effects of Energy on the Relationship between the Acoustic Focal Region and Biological Focal Region during Low-Power Cumulative HIFU Ablation." Applied Sciences 13, no. 7 (April 1, 2023): 4492. http://dx.doi.org/10.3390/app13074492.
Повний текст джерелаDaschner, Rosa, Holger Hewener, Wolfgang Bost, Steffen Weber, Steffen Tretbar, and Marc Fournelle. "Ultrasound Thermometry for HIFU-Therapy." Current Directions in Biomedical Engineering 7, no. 2 (October 1, 2021): 554–57. http://dx.doi.org/10.1515/cdbme-2021-2141.
Повний текст джерелаWang, Haoyang, Yuchen Sun, Yuxin Wang, Ying Chen, Yun Ge, Jie Yuan, and Paul Carson. "Temperature-Controlled Hyperthermia with Non-Invasive Temperature Monitoring through Speed of Sound Imaging." Applied Sciences 13, no. 12 (June 20, 2023): 7317. http://dx.doi.org/10.3390/app13127317.
Повний текст джерелаДисертації з теми "HiFUN simulations"
Barnat, Nesrine. "Conception et validation d'une méthode non-invasive de traitement des varices par ultrasons focalisés de haute intensité." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLET057.
Повний текст джерелаA novel thermal approach to treat non-invasively incompetent veins with high-intensity focused ultrasound (HIFU) is presented in this thesis.The ability to occlude small veins was first investigated. Two different sonication procedures were evaluated by numerical simulations and tested in vivo on rabbit veins. The histologic examination of the treated veins demonstrated the efficacy of the treatments, especially when the vein was compressed during ultrasonic exposures.A new procedure was then designed in order to coagulate larger veins, closer to human vein diameters. Experimental temperature measurements at the vein wall during HIFU pulses were used as inputs to determine numerically the optimum spacing between the pulses in order to induce a continuous coagulation along the vein. Acute animal trials on sheep veins were conducted to quantify tissue damages following such treatments. Finally, chronic studies up to 90 days were conducted on sheep in order to evaluate the long-term safety and efficacy of our treatment procedure. The histological findings validated the performance and safety of our HIFU thermal method, in a sheep model. From a pathology standpoint, the HIFU lesions are similar to those observed after radiofrequency ablation (an endovenous thermal modality used for the treatment of varicose veins).The results presented in this thesis allowed Theraclion to get the authorization to conduct first-in-human clinical trials for varicose vein treatments. The results were very encouraging and led to the CE-marking of the HIFU system
Bing, Fabrice. "Traitement des lésions osseuses par Ultrasons Focalisés de Haute Intensité : de la simulation aux applications cliniques." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD045/document.
Повний текст джерелаAfter a “state of art” on bone lesions ablation techniques, bone experimentations presented showed that deep focalisation allows the best lateral periosteal heating. On cement, from which the coefficient α was measured, the same thermic curves were observed. A simulation was done with two values of α (4.7 et 9.9 dB/cm). A higher heating at the periosteal focal point with superficial focalisation and a higher periosteal lateral heating with deep focalisation with a thermic inertia, were confirmed with simulation. Heating was higher with the high α value. A retrospective analysis of the bone lesions treated with minimally invasive treatment showed that 50% of osteoid osteomas and 35.7% of metastases were classified as suitable with MRgHIFU alone. 35.9% additional cases may have been treated with dissection or consolidation. At 1 MHz, US distortion due to the presence of needles in the US cone was observed only with the 13-gauge needle. However, if 18 to 22G needles may induce few distortion, an acoustic barrier may appear if the liquid injected flows in front of the US
Grisey, Anthony. "Modélisation et optimisation de la déposition de chaleur pour les ablations thermiques par ultrasons focalisés." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLC008.
Повний текст джерелаThis manuscript aims at discussing the complex issue of modeling high-intensity focused ultrasound thermal ablations. An acoustical simulation method, based on the use of the k-Wave library, is described and applied to the description of the interaction between the acoustic beam and the superficial tissue layers. It is validated in the linear domain based on hydrophone measurements realized in different configurations with biological samples. Nonlinear simulations are subsequently used to evaluate the influence of the tissue geometry on the beam focusing.The thermal modeling of the treatment is then discussed with intent to design a truly quantitative model. An equivalent model of the modified heat deposition pattern in presence of boiling is presented and validated based on the use of original, diverse and unexpensive data.Finally, an algorithm is proposed to optimize the focal spot trajectory in order to maximize the heat deposition efficiency, thus reducing treatment time. The advantages and the limits of the approach are discussed based on different examples
Chen, Ben-Ting, and 陳北亭. "Numerical simulation of lesion formation and temperature distribution in HIFU ablation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/12210831928497123194.
Повний текст джерела中原大學
土木工程研究所
103
Abstract High-intensity focused ultrasound (HIFU) has become a potential alternative to conventional therapies for primary and metastatic tumors, especially for those patients who are not suitable candidates for surgical resection. Thorough understanding of HIFU characteristics is important both for the accurate prediction of ultrasound induced bioeffects in tissues and for the development of standards to ensure the safety and efficacy of treatments. In-vitro experiments and numerical simulations are useful for prototyping and optimizing the geometries of device designs. In addition, they also form the basis of treatment planning platforms that assist physicians in tailoring thermal therapy procedures and operating parameters. Polymerization of N-isopropylacrylamide (NIPAM) with acrylic acid (AAc) has been adopted to fabricate reusable tissue-mimicking hydrogel phantoms designed for the real-time visualization and examination of thermal lesion formation in ablation and hyperthermia therapies. The cloud point temperature of the NIPAM-based hydrogel phantoms can be adjusted by the concentration of AAc to represent the threshold temperature of pain (42 C) or tissue damage (52 C). The mechanical, thermal and acoustic properties of the developed phantoms are similar to those of human soft tissues. The ability of the phantoms to provide visualization of thermal lesions produced by either microwave or high-intensity focused ultrasound (HIFU) ablation was examined. By processing the optical images of the phantoms at different stages of the heating process, a thermal lesion can be considered formed (i.e., threshold temperature reached) when the grayscale value reaches the half-saturation point. Additionally, energy thresholds for inducing transient or permanent bubbles in the phantoms during HIFU ablation were also identified to shed light on the onset of cavitation or material damage. An integrated computational framework for modeling HIFU thermal ablation is proposed in this study. The temperature field was obtained by solving the bioheat transfer equation (BHTE) through the finite element method, while the lesion was considered as denatured material and modelled with the latent heat. An equivalent attenuation coefficient, which considers the temperature-dependent properties of the phantom and ultrasound diffraction due to bubbles, is proposed in the nonlinear thermal transient analysis. Moreover, a modified thermal dose formulation is also proposed to predict the lesion size, shape, and location. In-vitro thermal ablation experiments using HIFU under different electrical powers were carried out to validate this computational framework. Our numerical results demonstrated that temperature histories and lesion areas from the proposed model correlated well with those from in-vitro experiments. Finally, we develop a novel method for both temperature estimation and thermal mapping that uses ultrasound B-mode RF data. The proposed method is a hybrid that combines elements of physical and statistical models to achieve higher precision and resolution of temperature variations and distribution. We propose a dimensionless combined index (CI) that combines the echo shift differential and signal intensity difference with a weighting factor relative to the distance from the heat source. In vitro experiments were performed, verifying that the combined index has a strong linear relationship with temperature variation and can be used to effectively estimate temperature with an average relative error of less than 5%. This algorithm provides an alternative for imaging guidance-based techniques during thermal therapy, and could easily be integrated into existing ultrasound systems.
Частини книг з теми "HiFUN simulations"
Nakajima, Y., J. Uebayashi, Y. Tamura, and Y. Matsumoto. "Large-scale simulation for HIFU treatment to brain." In Shock Waves, 863–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85181-3_11.
Повний текст джерелаLilkova, E., N. Ilieva, P. Petkov, E. Krachmarova, G. Nacheva, and L. Litov. "Molecular Dynamics Simulations of His$$_6$$-FLAG-hIFN$$\gamma $$ Fusion Glycoproteins." In Advanced Computing in Industrial Mathematics, 256–67. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71616-5_23.
Повний текст джерелаAudigier, Chloé, Younsu Kim, Nicholas Ellens, and Emad M. Boctor. "Physics-Based Simulation to Enable Ultrasound Monitoring of HIFU Ablation: An MRI Validation." In Medical Image Computing and Computer Assisted Intervention – MICCAI 2018, 89–97. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00937-3_11.
Повний текст джерела"Numerical Simulation of High Intensity Focused Ultrasound (HIFU) Using a Fully Compressible Multiscale Model." In Proceedings of the 10th International Symposium on Cavitation (CAV2018), 789–94. ASME Press, 2018. http://dx.doi.org/10.1115/1.861851_ch150.
Повний текст джерелаТези доповідей конференцій з теми "HiFUN simulations"
Arif, Tariq M., and Zhiming Ji. "A Fast Estimation Model for Angular Spectrum Based Focused Ultrasound Wave Simulation in Layered Tissue Media." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11088.
Повний текст джерелаOkita, Kohei, Ryuta Narumi, Takashi Azuma, Shu Takagi, and Yoichiro Matsumoto. "Modeling and Simulation of High-Intensity Focused Ultrasound Therapy for Breast Cancer." In ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fmd2013-16055.
Повний текст джерелаChao, Yu-Tin, Ya-Lin Yu, Jia-Yush Yen, Che-Jung Hsu, Michael Kam, Shih Tang Liu, Ming-Chih Ho, Yung-Yaw Chen, and Feng-Li Lian. "A Novel Design of High Intensity Focus Ultrasound (HIFU) for Enlarged Focus Area Application." In Modelling and Simulation. Calgary,AB,Canada: ACTAPRESS, 2013. http://dx.doi.org/10.2316/p.2013.802-036.
Повний текст джерелаSolovchuk, Maxim A., Tony W. H. Sheu, and Marc Thiriet. "Investigation Into the Acoustic Streaming and Convective Cooling Phenomena During a High-Intensity Focused Ultrasound Thermal Ablation." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-19004.
Повний текст джерелаMagda Abbas, A., C. Constatin- Coussios, and O. Robin Cleveland. "Patient Specific Simulation of HIFU Kidney Tumour Ablation." In 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8513647.
Повний текст джерелаXiaorui, Chen, Zhang Xiaojing, Wang Shaolin, and Jian Xiqi. "Simulation of the therapeutic region during HIFU therapy." In 2011 4th International Conference on Biomedical Engineering and Informatics (BMEI). IEEE, 2011. http://dx.doi.org/10.1109/bmei.2011.6098400.
Повний текст джерелаSoneson, Joshua E., and Emad S. Ebbini. "A User-Friendly Software Package for HIFU Simulation." In 8TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND. AIP, 2009. http://dx.doi.org/10.1063/1.3131405.
Повний текст джерелаSchaal, Christoph, and Vibhav Durgesh. "Investigation of the Scattering of Focused Ultrasonic Waves at Bones." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87133.
Повний текст джерелаMa, Jingsen, Xiaolong Deng, Chao-Tsung Hsiao, and Georges L. Chahine. "Hybrid MPI-OpenMP Accelerated Euler-Lagrange Simulations of Microbubble Enhanced HIFU." In ASME 2021 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/fedsm2021-65815.
Повний текст джерелаAmin, Viren. "HIFU Therapy Planning Using Pre-treatment Imaging and Simulation." In THERAPEUTIC ULTRASOUND: 5th International Symposium on Therapeutic Ultrasound. AIP, 2006. http://dx.doi.org/10.1063/1.2205467.
Повний текст джерела