Transesophageal Echocardiography pp 13-20 | Cite as
High-Frequency Annular Array Transesophageal Probe for High-Resolution Imaging and Continuous Wave Doppler Measurements
Conference paper
Abstract
In the early 1970s, ultrasonic probes were placed in the esophagus to monitor the blood velocity in the descending aorta, and for measurement of the aortic diameter to estimate the volumetric flow in the descending aorta [1–6]. Later [7–10], a mechanically scanned beam was used for two-dimensional (2-D) ultrasound backscatter imaging of the heart. A 10-MHz linear array mounted on the tip of a gastroscope was reported [11, 12], but the system has had limited application for cardiac imaging, partly because of the field of view and the lack of any ability to use lower frequencies. A phased array transducer mounted on the tip of a gastroscope for transesophageal imaging of the heart was first reported in 1981 [13, 14].
Keywords
Coronary Sinus Left Coronary Artery Paravalvular Leak Phase Array Transducer Coronary Sinus Flow
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© Springer-Verlag Berlin Heidelberg 1989