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Portable and tunable continuous wave driver from 1 MHz to 10 MHz for HIFU transducers

机译：便携式和可调连续波驱动器从1 MHz到10 MHz的HIFU传感器

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High Intensity Focused Ultrasound (HIFU) is a non-invasive technique used for oncology treatment, by causing tumor ablation. This paper presents the construction of a portable and tunable continuous wave driver to excite HIFU transducers. Driver consists of a frequency generator with adjustable resolution (10 kHz or 100 kHz increments) and 50Ω output impedance, a radiofrequency amplifier and a 1.965 MHz HIFU transducer. System characterization (frequency measurements, HIFU transducer electrical/acoustical characterization and amplifier power response) and ablation experiments in tissue mimicking phantoms are presented in this paper. HIFU transducer was driven with a 6.76 W continuous wave, during 3 min, which was gradually risen up to 50.118 W. The result at 52 s is a visible lesion inside the phantom. The lesion has a cigar shape at the focus distance (17 mm). Temperature at the focus reached 98.3°C.
机译：通过引起肿瘤消融，高强度聚焦超声（HIFU）是用于肿瘤学治疗的非侵入性技术。 本文介绍了便携式和可调连续波驱动器的构建，以激发HIFU传感器。 司机由具有可调分辨率（10kHz或100 kHz增量）和50＆＃x2126的频率发生器组成; 输出阻抗，射频放大器和1.965 MHz HIFU传感器。 本文介绍了系统表征（频率测量，HIFU换能器电/声学表征和放大器功率响应）和组织中的组织中的消融实验。 在3分钟内，HIFU传感器用6.76W连续波驱动，逐渐上升至50.118W。52 s的结果是幻像内的可见病变。 病变在焦距（17毫米）处具有雪茄形状。 焦点的温度达到98.3＆＃x00b0; c。

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