An ultrasonic intracardiac scanner

doi:10.1016/0041-624X(72)90250-8

Ultrasonics

Volume 10, Issue 2, March 1972, Pages 72-76

https://doi.org/10.1016/0041-624X(72)90250-8 Get rights and content

Abstract

Ultrasound cathetertip echo techniques may be applied to obtain internal dimensions of the heart. So far it has been difficult to study the movement of structures in a cross-sectional plane. This paper describes a 32-element cathetertip system (outer diameter 3 mm) specially developed for instantaneous study of moving cardiac structures. The system is based on the sonar-type phase-corrected circular array techniques. It is shown that such a catheter can be constructed. A brief discussion on the possible applications, the limitations and the preliminary in vitro results is given.

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Ultrasonic viewer for cross-sectional analysis of moving cardiac structures
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Coronary angiography remains the gold standard imaging method for the detection of coronary artery disease (CAD) and its widespread clinical application has steered patients to a host of beneficial interventional medical therapies. Nonetheless, this approach only provides a two-dimensional image of the contrast-filled arterial lumen and does not visualize the arterial wall where largest atherosclerotic plaques are located. Consequently, angiography often underestimates the degree of intraluminal stenosis and does not gauge the size of the plaque burden itself (Topol and Nissen, 1995).
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Citation Excerpt :
Today, producing catheter and intravascular ultrasound (IVUS) imaging system is currently known as the gold standard of in-vivo intravascular imaging for the vessel wall interrogation even after 40 years when it was suggested by Bom et al. [1,2].
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Direct visualization of the atherosclerotic burden in coronary artery disease (CAD) emerged in the 1990s and was the subject of many studies aiming to understand the progression of CAD, to detect plaques at risks (vulnerable plaques), and to guide percutaneous coronary interventions (PCIs). Several imaging modalities are available today: next to the initial intravascular ultrasound (IVUS), methods based on optical coherence tomography (OCT) have lately been of particular interest. These methods are very useful since they provide information about tissue microstructures and image the arterial wall with sufficient penetration as well as resolution.
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VV diameters reported in human diseased arteries range from 2–200 μm (Sluimer and Daemen 2009); however, the clinical tools to image coronary artery VV in vivo do not exist. Intravascular ultrasound (IVUS) is an established minimally invasive diagnostic tool that provides high-resolution intravascular images of the vessel wall and atherosclerotic plaques (Bom et al. 1972, de Korte et al. 2011). It has been shown that IVUS combined with an ultrasound contrast agent (UCA) has the capacity to detect VV in the arterial wall (Goertz et al. 2006a, 2007; Vavuranakis et al. 2008).
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An ultrasonic intracardiac scanner

Abstract

Ultrasonics

Ultrasonics

Left ventricular wall thickness measured by ultrasound

Arch Intern Med

Ultrasonic diagnostic methods in cardiology

Ultrasonic viewer for cross-sectional analysis of moving cardiac structures

Bio-Medical Engineering