Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation

Michael S. Firstenberg, Neil L. Greenberg, Mario J. Garcia, Peter L. Castro, David L. Prior, Nicholas G. Smedira, James D. Thomas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We hypothesize that a simplified version of the Euler equation (SEE) utilizing differences in velocity over a distance and time as obtained by Color Doppler M-mode (CMM) echocardiography can approximate actual peak transmitral pressure gradients (ΔPTM). Methods: In 14 patients undergoing open-heart surgery, ΔPTM was measured under various hemodynamic conditions using 2 high fidelity transducers, 5 cm apart. Transesophageal CMM images were simultaneously acquired and a customized image analysis application was used to abstract spatiotemporal velocity characteristics. Using both the SEE and a simplified Bernoulli equations, ΔPTM were determined and compared to the actual ΔPTM. Results: While the simplified Bernoulli equation resulted in a poor estimate (y = 0.075x+0.71, r = 0.45), the ΔPTM obtained using the SEE correlated strongly (y = 0.79x+0.48, r = 0.91) with the actual measurements. Conclusions: Semi-automated analysis of CMM images using a SEE can accurately estimate actual ΔPTM.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology
PublisherIEEE
Pages181-184
Number of pages4
StatePublished - 1999
Externally publishedYes
EventThe 26th Annual Meeting: Computers in Cardiology 1999 - Hannover, Ger
Duration: Sep 26 1999Sep 29 1999

Other

OtherThe 26th Annual Meeting: Computers in Cardiology 1999
CityHannover, Ger
Period9/26/999/29/99

Fingerprint

Pulse time modulation
Euler equations
Pressure gradient
Color
Pressure
Transducers
Thoracic Surgery
Echocardiography
Hemodynamics
Surgery
Image analysis

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

Cite this

Firstenberg, M. S., Greenberg, N. L., Garcia, M. J., Castro, P. L., Prior, D. L., Smedira, N. G., & Thomas, J. D. (1999). Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation. In Computers in Cardiology (pp. 181-184). IEEE.

Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation. / Firstenberg, Michael S.; Greenberg, Neil L.; Garcia, Mario J.; Castro, Peter L.; Prior, David L.; Smedira, Nicholas G.; Thomas, James D.

Computers in Cardiology. IEEE, 1999. p. 181-184.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Firstenberg, MS, Greenberg, NL, Garcia, MJ, Castro, PL, Prior, DL, Smedira, NG & Thomas, JD 1999, Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation. in Computers in Cardiology. IEEE, pp. 181-184, The 26th Annual Meeting: Computers in Cardiology 1999, Hannover, Ger, 9/26/99.
Firstenberg MS, Greenberg NL, Garcia MJ, Castro PL, Prior DL, Smedira NG et al. Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation. In Computers in Cardiology. IEEE. 1999. p. 181-184
Firstenberg, Michael S. ; Greenberg, Neil L. ; Garcia, Mario J. ; Castro, Peter L. ; Prior, David L. ; Smedira, Nicholas G. ; Thomas, James D. / Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation. Computers in Cardiology. IEEE, 1999. pp. 181-184
@inproceedings{fa8ffb826ca14111a2f08027edd48e57,
title = "Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation",
abstract = "We hypothesize that a simplified version of the Euler equation (SEE) utilizing differences in velocity over a distance and time as obtained by Color Doppler M-mode (CMM) echocardiography can approximate actual peak transmitral pressure gradients (ΔPTM). Methods: In 14 patients undergoing open-heart surgery, ΔPTM was measured under various hemodynamic conditions using 2 high fidelity transducers, 5 cm apart. Transesophageal CMM images were simultaneously acquired and a customized image analysis application was used to abstract spatiotemporal velocity characteristics. Using both the SEE and a simplified Bernoulli equations, ΔPTM were determined and compared to the actual ΔPTM. Results: While the simplified Bernoulli equation resulted in a poor estimate (y = 0.075x+0.71, r = 0.45), the ΔPTM obtained using the SEE correlated strongly (y = 0.79x+0.48, r = 0.91) with the actual measurements. Conclusions: Semi-automated analysis of CMM images using a SEE can accurately estimate actual ΔPTM.",
author = "Firstenberg, {Michael S.} and Greenberg, {Neil L.} and Garcia, {Mario J.} and Castro, {Peter L.} and Prior, {David L.} and Smedira, {Nicholas G.} and Thomas, {James D.}",
year = "1999",
language = "English (US)",
pages = "181--184",
booktitle = "Computers in Cardiology",
publisher = "IEEE",

}

TY - GEN

T1 - Semi-automated analysis of color M-mode echocardiographic images for determining transmitral pressure gradients using a simplified Euler equation

AU - Firstenberg, Michael S.

AU - Greenberg, Neil L.

AU - Garcia, Mario J.

AU - Castro, Peter L.

AU - Prior, David L.

AU - Smedira, Nicholas G.

AU - Thomas, James D.

PY - 1999

Y1 - 1999

N2 - We hypothesize that a simplified version of the Euler equation (SEE) utilizing differences in velocity over a distance and time as obtained by Color Doppler M-mode (CMM) echocardiography can approximate actual peak transmitral pressure gradients (ΔPTM). Methods: In 14 patients undergoing open-heart surgery, ΔPTM was measured under various hemodynamic conditions using 2 high fidelity transducers, 5 cm apart. Transesophageal CMM images were simultaneously acquired and a customized image analysis application was used to abstract spatiotemporal velocity characteristics. Using both the SEE and a simplified Bernoulli equations, ΔPTM were determined and compared to the actual ΔPTM. Results: While the simplified Bernoulli equation resulted in a poor estimate (y = 0.075x+0.71, r = 0.45), the ΔPTM obtained using the SEE correlated strongly (y = 0.79x+0.48, r = 0.91) with the actual measurements. Conclusions: Semi-automated analysis of CMM images using a SEE can accurately estimate actual ΔPTM.

AB - We hypothesize that a simplified version of the Euler equation (SEE) utilizing differences in velocity over a distance and time as obtained by Color Doppler M-mode (CMM) echocardiography can approximate actual peak transmitral pressure gradients (ΔPTM). Methods: In 14 patients undergoing open-heart surgery, ΔPTM was measured under various hemodynamic conditions using 2 high fidelity transducers, 5 cm apart. Transesophageal CMM images were simultaneously acquired and a customized image analysis application was used to abstract spatiotemporal velocity characteristics. Using both the SEE and a simplified Bernoulli equations, ΔPTM were determined and compared to the actual ΔPTM. Results: While the simplified Bernoulli equation resulted in a poor estimate (y = 0.075x+0.71, r = 0.45), the ΔPTM obtained using the SEE correlated strongly (y = 0.79x+0.48, r = 0.91) with the actual measurements. Conclusions: Semi-automated analysis of CMM images using a SEE can accurately estimate actual ΔPTM.

UR - http://www.scopus.com/inward/record.url?scp=0033282574&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033282574&partnerID=8YFLogxK

M3 - Conference contribution

SP - 181

EP - 184

BT - Computers in Cardiology

PB - IEEE

ER -