Resolution in ultrasound imaging
TLDR
Three main aspects of the physics of diagnostic ultrasound are discussed, that is to say, spatial resolution, temporal resolution, and contrast resolution; it utilizes examples from perioperative echocardiography to illustrate these principles.Abstract:
Ultrasound scanning is now utilized in all aspects of anaesthesia, critical care, and pain management. Typical applications include determination of left ventricular function and cardiac output, assessment of haemodynamic instability, assistance with difficult venous access, and facilitation of accurate neural block. – 3 One aspect of competency in ultrasound imaging includes an understanding of how images can be displayed optimally. This article discusses three main aspects of the physics of diagnostic ultrasound, that is to say, spatial resolution, temporal resolution, and contrast resolution; it utilizes examples from perioperative echocardiography to illustrate these principles.read more
Citations
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Low-intensity ultrasound neuromodulation: An overview of mechanisms and emerging human applications.
TL;DR: LIFUS can noninvasively influence human brain activity by suppressing cortical evoked potentials, influencing cortical oscillatory dynamics, and altering outcomes of sensory/motor tasks compared to sham sonication.
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Focused Ultrasound for Neuromodulation.
TL;DR: Focused ultrasound boasts a number of key features such as multimodal compatibility, submillimeter steerable focusing, multifocal, high temporal resolution, coregistration, and the ability to monitor delivered therapy and temperatures in real time.
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Full-waveform inversion imaging of the human brain
TL;DR: In silico simulations, it is demonstrated that full-waveform inversion, a computational technique originally developed in geophysics, is able to generate accurate three-dimensional images of the brain with sub-millimetre resolution.
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The 99th percentile of reference population for cTnI and cTnT assay: methodology, pathophysiology and clinical implications
Aldo Clerico,Martina Zaninotto,Andrea Ripoli,Silvia Masotti,Concetta Prontera,Claudio Passino,Mario Plebani +6 more
TL;DR: The present article reviewed the methodological and pathophysiological factors affecting the evaluation and calculation of the 99th URL for cTn assay, highlighting the need for international recommendations not only for demographic and physiological variables criteria for defining a healthy reference population, but also for calculating mathematical algorithms for establishing/calculated clinical decision values.
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Continuous monitoring of deep-tissue haemodynamics with stretchable ultrasonic phased arrays.
Chonghe Wang,Chonghe Wang,Baiyan Qi,Muyang Lin,Zhuorui Zhang,Mitsutoshi Makihata,Boyu Liu,Sai Zhou,Yi-Hsi Huang,Hongjie Hu,Yue Gu,Yimu Chen,Yusheng Lei,Taeyoon Lee,Taeyoon Lee,Shu Chien,Kyung In Jang,Erik B. Kistler,Sheng Xu +18 more
TL;DR: In this paper, a prototype skin-conformal ultrasonic phased array for the monitoring of haemodynamic signals from tissues up to 14 cm beneath the skin is presented, which allows for active focusing and steering of ultrasound beams over a range of incident angles so as to target regions of interest.
References
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Recommendations for quantification of Doppler echocardiography: A report from the Doppler quantification task force of the nomenclature and standards committee of the American Society of Echocardiography
Book
Feigenbaum's echocardiography
TL;DR: Feigenbaum's echocardiography is an attempt to characterize the inner workings of the heart through the role of EMT and its applications in tissue engineering.
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Contrast echocardiography: evidence-based recommendations by European Association of Echocardiography.
Roxy Senior,Harald Becher,Mark J. Monaghan,Luciano Agati,José Luis Zamorano,Jean-Louis Vanoverschelde,Petros Nihoyannopoulos +6 more
TL;DR: Based on the evidence, recommendations are proposed for the clinical use of contrast echocardiography, both for improving assessment of left ventricular structure and function compared with unenhanced echOCardiography and for the identification of myocardial perfusion.
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Fifteen years of ultrasound guidance in regional anaesthesia: Part 2—Recent developments in block techniques
TL;DR: A comprehensive review of the relevant literature of the last 5 yr with a commentary based on clinical experience in order to provide information relevant to patient management of individual ultrasound-guided nerve blocks in adults.