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Roy A, Sural S, Mukherjee J, Majumdar AK. State-Based Modeling and Object Extraction From Echocardiogram Video. ACTA ACUST UNITED AC 2008; 12:366-76. [PMID: 18693504 DOI: 10.1109/titb.2007.910352] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Aditi Roy
- School of Information Technology, Indian Institute of Technology (IIT), Kharagpur 721302, India.
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Waggoner AD. Alternative Echocardiographic Methods to Assess Left Ventricular Diastolic Function. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2002. [DOI: 10.1177/875647930201800406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The standard noninvasive method to assess left ventricular diastolic function has been pulsed Doppler echocardiographic recordings of mitral inflow early diastolic (E) and atrial (A) filling velocities and the ratio of E to A, in combination with isovolumic relaxation and deceleration times. Pulmonary venous inflow velocities (systolic, diastolic, and atrial reversal) are used to assess left atrial and left ventricular end-diastolic pressures. These measurements are influenced by changes in preload, including left ventricular end-diastolic pressure, left atrial or pulmonary capillary wedge pressure, and left ventricular volumes. Newer methods such as tissue Doppler imaging (TDI) of the mitral annulus and color M-mode recording of left ventricular diastolic flow propagation (FP) have now evolved as additional techniques for detecting abnormalities in left ventricular diastolic function that can complement the standard pulsed Doppler echocardiography methods. Both TDI and color M-mode flow FP appear to offer distinct advantages as relatively load-independent measures of diastolic function. TDI can be used for measurement of regional diastolic myocardial velocities at the mitral annulus, and it is particularly useful in identifying abnormalities of left ventricular diastolic relaxation or estimation of left ventricular filling pressures. Color M-mode FP can be used for quantification of abnormalities of left ventricular relaxation and diastolic filling characteristics of the left ventricle.
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Affiliation(s)
- Alan D. Waggoner
- Cardiovascular Imaging and Clinical Research Core Laboratory, Barnes-Jewish Hospital Foundation, and Washington University School of Medicine, St. Louis, Missouri; Cardiovascular Division, Box 8086, Washington University School of Medicine, 660 S Euclid Avenue, St. Louis, MO 63110
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