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Therapeutic ultrasound guided by MRI is a noninvasive treatment that potentially reduces mortality, lowers medical costs, and widens accessibility of treatments for patients. Recent developments in the design and fabrication of capacitive micromachined ultrasonic transducers (CMUTs) have made them competitive with piezoelectric transducers for use in therapeutic ultrasound applications. In this paper,...
In the last decade, noninvasive therapeutic ultrasound guided by magnetic resonance imaging (MRI) has increased in popularity for diseases such as cancer and heart arrhythmias. While piezoelectric transducers are the dominant technology for therapeutic ultrasound applications, recently capacitive micromachined ultrasonic transducers (CMUTs) have demonstrated competitive performance and ease of fabrication...
High intensity focused ultrasound (HIFU) guided by magnetic resonance imaging (MRI) is a noninvasive treatment that can potentially reduce morbidity, lower costs, and widen accessibility for patients with upper abdominal cancers. Traditionally, piezoelectric transducers are used for HIFU, but recent developments in capacitive micromachined ultrasonic transducers (CMUTs) have made them competitive...
In this paper, we investigate using a large aperture (64 times 64 element array) to perform photoacoustic and acoustic imaging by mechanically scanning a smaller array (16 times 16 elements) of capacitive micromachined ultrasonic transducers (CMUTs). We show results from the imaging of: 1) A fishing-line phantom. 2) Tubes embedded in chicken breast tissue containing the contrast agent indocyanine...
We present the development of a capacitive micromachined ultrasonic transducer (CMUT) array for noninvasive focused ultrasound ablation of lower abdominal cancers under MR-guidance. While piezoelectric transducers have been traditionally used for high intensity focused ultrasound (HIFU), recent advances in capacitive micromachined ultrasonic transducers (CMUTs) have made them highly competitive with...
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