Results 231 to 240 of about 21,910 (284)
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Polyvinyl chloride plastisol breast phantoms for ultrasound imaging
Ultrasonics, 2016Ultrasonic phantoms are objects that mimic some features of biological tissues, allowing the study of their interactions with ultrasound (US). In the diagnostic-imaging field, breast phantoms are an important tool for testing performance and optimizing US systems, as well as for training medical professionals.
Isabela Miller, de Carvalho +6 more
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Training Phantoms for Ultrasound Diagnostics
Virtual Technologies in Medicine, 2022Our team has developed a number of phantoms suitable for advanced training of ultrasound diagnostic doctors, as well as testing their knowledge and skills. Phantoms are made of durable materials and can be considered analogues of foreign commercial models.
D. Leonov +3 more
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Anthropomorphic cardiac ultrasound phantom
Proceedings., IEEE Ultrasonics Symposium, 1989A new phantom is described which simulates the human cardiac anatomy for applications in ultrasound imaging, ultrasound Doppler, and color-flow Doppler imaging. The phantom consists of a polymer left ventricle which includes a prosthetic mitral and aortic valve and is connected to a mock circulatory loop.
S W, Smith, J E, Rinaldi
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A doppler ultrasound clutter phantom
Ultrasound in Medicine & Biology, 1996We describe two variations of a phantom designed to evaluate the wall filters implemented on colour and spectral Doppler instruments. Both variations use an acoustic beam splitter to place the same Doppler sample volume within a motor-driven clutter belt and a flow source, which is either a second belt (dual-belt phantom) or a vascular phantom (belt ...
D W, Rickey, A, Fenster
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Investigating atherosclerotic plaque phantoms for ultrasound therapy
Journal of Ultrasound, 2022The aim of the proposed study was to conduct a feasibility study using a flat rectangular (2 × 10 mm2) transducer operating at 4.0 MHz for creating thermal lesions in an arterial atherosclerotic plaque phantom. The proposed method can be used in the future for treating atherosclerotic plaques in human arteries.The flat rectangular transducer was ...
Michalis Sotiriou +2 more
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Phantoms for Quantitative Ultrasound
2023Tissue-mimicking materials and phantoms have an important role in quantitative ultrasound. These materials allow for investigation of new techniques with the ability to design materials with properties that are stable over time and available for repeated measurements to refine techniques and analysis algorithms. This chapter presents an overview of the
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Tissue mimicking materials for ultrasound phantoms
Medical Physics, 1978Up until now, no material has been found whose attenuation and speed of sound properties not only mimic those of human soft tissue, but are controllable in magnitude. We have discovered such a material in the form of water‐based pharmaceutical gels containing uniform distributions of graphite powder and known concentrations of alcohol. The magnitude of
E L, Madsen +3 more
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Construction of an ultrasound biopsy phantom
Australasian Radiology, 1996SUMMARYThe technique for construction of an agar‐based ultrasound biopsy phantom is described. Features include tissue equivalent reflectivity, long life and non‐shadowing targets. The phantom is useful for learning the necesary co‐ordination between needle and probe for ultrasound needle guidance.
A S, Patel +3 more
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Head phantoms for transcranial focused ultrasound
Medical Physics, 2015Purpose:In the ongoing endeavor of fine‐tuning, the clinical application of transcranial MR‐guided focused ultrasound (tcMRgFUS), ex‐vivo studies wlkiith whole human skulls are of great use in improving the underlying technology guiding the accurate and precise thermal ablation of clinically relevant targets in the human skull.
Matthew D C, Eames +7 more
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The British Journal of Radiology, 1984
I am writing this letter in response to an article which appeared in the BJR in 1982 (Lerski et al), and which has recently come to my attention. We invented an ultrasound tissue-mimicking phantom utilising polyurethane reticulated foam in the late 1970's.
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I am writing this letter in response to an article which appeared in the BJR in 1982 (Lerski et al), and which has recently come to my attention. We invented an ultrasound tissue-mimicking phantom utilising polyurethane reticulated foam in the late 1970's.
openaire +2 more sources