Real-time images of the heart from within the esophagus are produced by a new intraesophageal ultrasonic sector scanner. Sixty images per second are displayed on a gray scale CRT in real-time and recorded on standard videotape for review. By interactive positioning of the esophageal probe, heart ventricles, atria, and valves can be visualized and their dynamics can be studied. The esophageal probe comprises four 5 MHz PZT-5 piezoelements of 6.35 mm diameter, mounted on a shaft that rotates at 900 rpm. The piezoelements are pulsed at a 5 kHz rate and the echoes are processed electronically.
Cardiac; contrast; echocardiography; endoscopic ultrasound, esophageal; imaging; real-time; ultrasound
Date of this Version
Fearnot, N. E.; Babbs, Charles F.; Bourland, J. D.; and Geddes, L. A., "Dynamic Intraesophageal Imaging of the Heart with Ultrasound" (1980). Weldon School of Biomedical Engineering Faculty Publications. Paper 151.