Accurate on-line acquisition of an echocardiographic signal would allow for improved applications of the use of echocardiography for research and patient care. In order to facilitate the acquisition of on-line echocardiographic data, a small, inexpensive tracking and digitizing system has been developed. The digitized data were acquired by the PDP 11/70 computer along with pulse echo Doppler analog signals. A study was performed using this methodology to determine the relationship between the first derivative of the aortic root motion and the relative transmitral flow velocity determined by Doppler. During diastole, these two parameters showed a good visual correlation with similar shape and time course and when simultaneous values were plotted a linear correlation was found in five normal subjects with r values ranging from 0. 81 to 0. 90. Thus, a simple on-line digital tracking and gating device has been developed to study the relationship between motion of the aortic root by m-mode echocardiography and transmitral flow determined by Doppler techniques.
|Original language||English (US)|
|Number of pages||4|
|Journal||Computers in Cardiology|
|State||Published - 1980|
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine