- Conference date: 18-20 September 2004
- Location: Kyoto (Japan)
A versatile biomedical ultrasound system has been developed and tested. The system controls and monitors high‐intensity focused ultrasound (HIFU) exposures designed to produce therapeutic tissue lesions primarily by thermal phenomena. The system is used with custom HIFU transducer arrays that contain central diagnostic transducer arrays. The diagnostic and visualization functions are performed using a subsystem that provides full digital control over high‐resolution diagnostic ultrasound arrays. Custom software controls all aspects of the imaging (e.g., electronic focusing and frame rates) with scripts and a graphical user interface. The HIFU transducer is excited using a 16‐channel power amplifier controlled by a digital subsystem and waveform synthesizers. Software operator control is also provided for desired HIFU exposure parameters (apodization, frequency, time duration, focal length, intensity) and a variety of synchronous excitation modes for the HIFU and diagnostic arrays.
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