Multifrequency Ultrasound Radiation
نویسندگان
چکیده
منابع مشابه
Vibro-acoustography and multifrequency image compounding.
Vibro-acoustography is an ultrasound based imaging modality that can visualize normal and abnormal soft tissue through mapping the acoustic response of the object to a harmonic radiation force at frequency Δf induced by focused ultrasound. In this method, the ultrasound energy is converted from high ultrasound frequencies to a low acoustic frequency (acoustic emission) that is often two orders ...
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Embolus Differentiation Using Multifrequency Transcranial Doppler To the Editor: Markus and Punter report disappointing results for differentiation between solid and gaseous emboli using both the default settings of the Embo-Dop multifrequency transcranial Doppler system,1 and the modified criteria recommended by Russell and Brucher.2,3 One reason for this poor performance is a fundamental limi...
متن کاملApplications for multifrequency ultrasound biomicroscopy in mice from implantation to adulthood.
A new multifrequency (19-55 MHz) ultrasound biomicroscope with two-dimensional imaging and integrated Doppler ultrasound was evaluated using phantoms and isoflurane-anesthetized mice. Phantoms revealed the biomicroscope's lateral resolution was between 50 and 100 microm, whereas that of a conventional 13 MHz ultrasound system was 200-500 microm. This difference was apparent in the markedly high...
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Background: The rationale was to develop an ablation approach to destroy regions of tumor resistant to radiation and thus reduce the time required for whole tumor ablation, while improving overall tumor control after radiotherapy. Materials and Methods: The system is composed of a micro positron emission tomography (mPET), 7T magnetic resonance imaging (MRI), and a customized MRI-compatible foc...
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BACKGROUND High-variable-frequency ultrasound is used as an imaging tool for various cutaneous disorders. We utilized this tool in pachyonychia congenita (PC) patients, who typically present with plantar hyperkeratosis and often severely debilitating pain, compared to patients with epidermolytic palmoplantar keratoderma (EPPK) and mal de Meleda (MDM). OBJECTIVE To ascertain the feasibility of...
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