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Diagnostic Ultrasound: Imaging and Blood Flow Measurements
INTRODUCTION History Role of Ultrasound in Medical Imaging Purpose of the Book Reference Further Reading FUNDAMENTALS OF ACOUSTIC PROPAGATION Stress and Strain Relationships Acoustic Wave Equation…
Design of efficient, broadband single-element (20-80 MHz) ultrasonic transducers for medical imaging applications
TLDR
Both transducer focusing techniques proved successful in producing highly sensitive, high-frequency, single-element, ultrasonic-imaging transducers that could possibly allow for an increase in depth of penetration, higher image signal-to-noise ratio (SNR), and improved image contrast at high frequencies when compared to previously reported results.
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High frequency properties of passive materials for ultrasonic transducers
TLDR
Experimental results showed that the acoustic impedance of the composites monotonically increased with the volume fraction of the particle filler, which is in agreement with the Denavey model, and results suggest that materials that possess a higher attenuation also appear to have a larger velocity dispersion.
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Piezoelectric materials for high frequency medical imaging applications: A review
The performance of transducers operating at high frequencies is greatly influenced by the properties of the piezoelectric materials used in their fabrication. Selection of an appropriate material for…
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Simultaneous functional photoacoustic and ultrasonic endoscopy of internal organs in vivo
At present, clinicians routinely apply ultrasound endoscopy in a variety of interventional procedures that provide treatment solutions for diseased organs. Ultrasound endoscopy not only produces…
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Photoacoustic ophthalmoscopy for in vivo retinal imaging
TLDR
By integrating PAOM with SD-OCT, this work further achieved OCT-guided PAOM, which can provide multi-modal retinal imaging simultaneously, and demonstrated by imaging both the microanatomy and microvasculature of the rat retina in vivo.
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Piezoelectric films for high frequency ultrasonic transducers in biomedical applications.
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Micro-Electrocardiograms to Study Post-Ventricular Amputation of Zebrafish Heart
TLDR
A minimally invasive methodology to monitor zebrafish heart function, electrical activities, and regeneration in real-time by the use of micro-electrodes, signal amplification, and a low pass-filter at a sampling rate of 1 kHz is demonstrated.
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A 30-MHz piezo-composite ultrasound array for medical imaging applications
TLDR
In this work, a method for fabricating fine-scale 2-2 composites suitable for 30-MHz linear array transducers was successfully demonstrated and high thickness coupling, low mechanical loss, and moderate electrical loss were achieved.
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Biomimetic Anisotropic Reinforcement Architectures by Electrically Assisted Nanocomposite 3D Printing
TLDR
Biomimetic architectures with Bouligand-type carbon nanotubes are fabricated by an electrically assisted 3D-printing method to create a reinforced artificial meniscus with circumferentially and radially aligned carbon Nanotubes.
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