China
Africa
Explore chapters and articles related to this topic
A Deep Learning and Multilayer Neural Network Approach for Coronary Heart Disease Detection
Published in Neeraj Mohan, Surbhi Gupta, Chuan-Ming Liu, Society 5.0 and the Future of Emerging Computational Technologies, 2022
Seema Rani, Neeraj Mohan, Surbhi Gupta, Priyanka Kaushal, Amit Wason
Echocardiography is a popular method for cardiac imagery, which captures ultrasound videos of discrete cardiac views, internal structures and motions. For the evaluation of the function and heart morphology and to diagnose heart problems related to movement deformities, this technique is preferred as a major tool. It permits rapid assessment of cardiac size, structure, function and hemodynamics (Spencer et al. 2013). This technique is the best approach for cardiac imaging. The development by technological advances of portable ultrasound systems has made echocardiography suitable for different situations, for example, health missions to developing countries. Remote assessment of echocardiograms using a cloud-computing environment may be helpful in expediting care in remote areas (Singh et al. 2013).
Portable High-Frequency Ultrasound Imaging System Design and Hardware Considerations
Published in Troy Farncombe, Krzysztof Iniewski, Medical Imaging, 2017
Insoo Kim, Hyunsoo Kim, Flavio Griggio, Richard L. Tutwiler, Thomas N. Jackson, Susan Trolier-McKinstry, Kyusun Choi
This chapter also introduces the Penn State portable ultrasound imaging system as an example of existing portable high-frequency ultrasound imaging systems. The Penn State ultrasound imaging system consists of low-voltage-operated thin-film transducer array and a fully integrated custom-designed CMOS transceiver chip. A 16 channel ultrasound receivers are shared with an A/D converter and a 3 Kb SRAM. The chip also makes it feasible for the transducers to be fabricated on the same package or board with the chip, and anticipates more cost and size reduction. Initial pulse-echo experiments using the imaging system were performed and the experimental results demonstrate the shared ADC architecture and the transceiver chip components designs.
Portable High-Frequency Ultrasound Imaging System Design and Hardware Considerations
Published in Iniewski Krzysztof, Integrated Microsystems, 2017
Insoo Kim, Hyunsoo Kim, Flavio Griggio, Richard L. Tutwiler, Thomas N. Jackson, Susan Trolier-McKinstry, Kyusun Choi
This chapter also introduces the Penn State portable ultrasound imaging system as an example of existing portable high-frequency ultrasound imaging systems. The Penn State ultrasound imaging system consists of a low-voltage-operated thin-film transducer array and a fully integrated custom-designed CMOS transceiver chip. A 16-channel ultrasound receiver is shared with an ADC and a 3-kbyte SRAM. The chip also makes it feasible for the transducers to be fabricated on the same package or board with the chip, and anticipates more cost and size reduction. Initial pulse–echo experiments using the imaging system were performed and the experimental results demonstrate the shared ADC architecture and the transceiver chip component designs.
Production of acoustic radiation force using ultrasound: methods and applications
Published in Expert Review of Medical Devices, 2018
One limitation of using ARF in tissue is the need for a substantial power source in the scanner. Adequate power supplies exist in the market, but incorporation into different ultrasound scanners is necessary to sustain ultrasound transmissions at high power. This limits the use of ARF in more modest ultrasound scanners including portable ultrasound units because of space and cost constraints, and to date has been relegated to more premium systems. Regulatory limits set for diagnostic ultrasound are adhered to and to the knowledge of the ultrasound community prevent tissue damage, but could be revisited to open up new areas or make ARF-based applications more efficacious in application areas where success rates may be diminished such as elastographic measurements at depth. However, for specialized applications such as particle and cell manipulation, the acoustic fields and ARF do not need to be as strong, because the targets are usually in an aqueous solution with very low attenuation.