Automated Cardiac Output Measurement by Spatiotemporal Integration of Color Doppler Data

Abstract

Automatic integration of numerical data within color Doppler flow fields is a feasible new method for quantifying flow. It is simpler and faster, requires fewer assumptions, and uses only one apical view. ACOM is a promising new approach to echocardiographic quantification that deserves further study and refinement.

Spatial velocity profile changes along the cord in normal human fetuses: can these affect Doppler measurements of venous umbilical blood flow?

“…During color Doppler imaging the gray scale is clearly visible and allows the operator to exactly define the vessel walls and to set an optimal gain; the optimal gain setting was simply obtained by maximizing the gain level without random color noise in the non-flow areas (i.e. the color uniformly fills the vessel but is not seen in the adjacent walls 17 ).…”

Echocardiographic automated cardiac output measurement of pulmonary output and quantification of intracardiac shunt

“…Automated cardiac output method has been recently developed and validated in different clinical situations [12][13][14]27]. Sun et al have clearly demonstrated that ACM is a feasible, easy and fast method [11], since it allowed to decrease time acquisition for the calculation of aortic output, as compared to the traditional Doppler method. In our study, we have demonstrated that ACM is a reliable method for the calculation of pulmonary output, with best correlations and agreements between echocardiographic and invasive pulmonary outputs obtained with ACM, as compared to the conventional PWD method.…”

“…The principle of ACM has been previously reported [11,19]. This methods allows to perform automatically the calculation of cardiac output.…”

“…A new echocardiographic method, the automated cardiac output measurement (ACM) has been validated for the calculation of aortic output [11]. Several echocardiographic applications have been proposed such as the quantification of aortic or mitral regurgitations [12][13][14][15].…”

Echokardiographische Flussquantifizierung zur Schweregradbestimmung von Klappeninsuffizienzen

“…ACOM-MethodeAuch die ACOM-Methode ("Automated Cardiac Output Measurement") basiert wie die PISA-Methode auf einer Farb-Doppler-Geschwindigkeitsanalyse im proximalen Flussfeld[45]. Bei ihr werden jedoch die unterschiedlichen Geschwindigkeiten in einer Ebene, die senkrecht zur Flussrichtung im proximalen Flussfeld liegt, bestimmt und nicht die gleichen Geschwindigkeiten auf einer Hemisphäre (Abbildung 7).…”