منابع مشابه
Carotid artery stenosis: grayscale and Doppler ultrasound diagnosis--Society of Radiologists in Ultrasound consensus conference.
The Society of Radiologists in Ultrasound convened a multidisciplinary panel of experts in the field of vascular ultrasonography (US) to come to a consensus regarding Doppler US for assistance in the diagnosis of carotid artery stenosis. The panel's consensus statement is believed to represent a reasonable position on the basis of analysis of available literature and panelists' experience. Key ...
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Estimation of blood velocities using ultrasound and time-domain cross-correlation is investigated. The measurement principle is introduced and the basic properties of the cross-correlation function is discussed. Expressions for the variance of the estimates of the peak location are given showing the innuence of integration time, transducer bandwidth and signal-to-noise ratio. It is also shown t...
متن کاملFocused—Basic Ultrasound Principles and Artifacts
turn on the machine. Apply coupling gel. Start scanning. In the realm of the busy veterinary general practice, emergency clinic, or intensive care unit, that statement really sums up the basic use of ultrasound. Just as natural as it is for us to take the stethoscope from around our neck and place it on a patient’s thorax, so should be picking up the ultrasound probe and placing it on the patie...
متن کاملNeedle-related ultrasound artifacts and their importance in anaesthetic practice.
Real-time ultrasound guidance for any intervention relies on visualization of needle advancement towards a target. Unfortunately, correct identification of the needle tip is not straightforward, as artifacts always distort the image. The ultrasonic appearance of the needle is often degraded by reverberation, comet tail, side-lobe, beam-width, or bayonet artifacts, which can easily confuse an un...
متن کاملUltrasound Examination in Reptiles: Restraint, Positionning, Artifacts and Patient Examination
INTRODUCTION Two dimensional (2-D) ultrasonography is a particularly well-adapted tool for exploring soft tissue in reptiles (liver, kidney, bladder, genital system, heart and large blood vessels at the base of the heart, as well as the digestive tract) 4,5,6,8,9,10,12,13,14,15. Unlike radiography, it can differentiate various soft tissue structures and provide information regarding organ locat...
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ژورنال
عنوان ژورنال: Clinical Ultrasound
سال: 2019
ISSN: 2465-7786,2465-7794
DOI: 10.18525/cu.2019.4.2.59