Realistic three-dimensional left ventricular ejection determined from computational fluid dynamics

Tad W. Taylor; Haruka Okino; Takami Yamaguchi

Realistic three-dimensional left ventricular ejection determined from computational fluid dynamics

Tad W. Taylor, Haruka Okino, Takami Yamaguchi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A realistic model of the left ventricle of the heart was constructed using a cast from a dog heart which was in diastole. A coordinate measuring machine was used to measure and digitize the coordinates of the left ventricle. From the complex measured left ventricle shape values, a three dimensional finite volume representation was constructed using a simulation package. The left ventricular walls moved towards the center of the aortic outlet in order to study the effects of time varying left ventricular ejection. The left ventricular wall motion was assumed to follow the blood flow and the wall grid was reformed 25 times during the calculation. The 25.8 cc ventricular volume was reduced to 75% in 0.25 seconds. Centerline and cross-sectional velocity vectors greatly increased in magnitude at the aortic outlet, and most of the pressure occurred in the top 15% of the heart. The computational method should make is possible to compare simulation results with important measurement techniques such as ultrasound and magnetic resonance imaging and this should allow a finer detail of flow understanding than is presently available using either a modeling or imaging method alone.

Original language	English
Title of host publication	Advances in Bioengineering
Editors	John M. Tarbell
Publisher	Publ by ASME
Pages	119-122
Number of pages	4
ISBN (Print)	0791810313
Publication status	Published - 1993
Externally published	Yes
Event	Proceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA Duration: 1993 Nov 28 → 1993 Dec 3

Publication series

Name	American Society of Mechanical Engineers, Bioengineering Division (Publication) BED
Volume	26

Other

Other	Proceedings of the 1993 ASME Winter Annual Meeting
City	New Orleans, LA, USA
Period	93/11/28 → 93/12/3

ASJC Scopus subject areas

Engineering(all)

Cite this

Realistic three-dimensional left ventricular ejection determined from computational fluid dynamics. / Taylor, Tad W.; Okino, Haruka; Yamaguchi, Takami.

Advances in Bioengineering. ed. / John M. Tarbell. Publ by ASME, 1993. p. 119-122 (American Society of Mechanical Engineers, Bioengineering Division (Publication) BED; Vol. 26).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Taylor, TW, Okino, H & Yamaguchi, T 1993, Realistic three-dimensional left ventricular ejection determined from computational fluid dynamics. in JM Tarbell (ed.), Advances in Bioengineering. American Society of Mechanical Engineers, Bioengineering Division (Publication) BED, vol. 26, Publ by ASME, pp. 119-122, Proceedings of the 1993 ASME Winter Annual Meeting, New Orleans, LA, USA, 93/11/28.

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abstract = "A realistic model of the left ventricle of the heart was constructed using a cast from a dog heart which was in diastole. A coordinate measuring machine was used to measure and digitize the coordinates of the left ventricle. From the complex measured left ventricle shape values, a three dimensional finite volume representation was constructed using a simulation package. The left ventricular walls moved towards the center of the aortic outlet in order to study the effects of time varying left ventricular ejection. The left ventricular wall motion was assumed to follow the blood flow and the wall grid was reformed 25 times during the calculation. The 25.8 cc ventricular volume was reduced to 75% in 0.25 seconds. Centerline and cross-sectional velocity vectors greatly increased in magnitude at the aortic outlet, and most of the pressure occurred in the top 15% of the heart. The computational method should make is possible to compare simulation results with important measurement techniques such as ultrasound and magnetic resonance imaging and this should allow a finer detail of flow understanding than is presently available using either a modeling or imaging method alone.",

author = "Taylor, {Tad W.} and Haruka Okino and Takami Yamaguchi",

note = "Funding Information: ACKNOWLEDGEMENTS Part of this study was supported by the grant-in-aid for scientific research on priority areas, “Biomechanics of Structure and Function of Living Cells, Tissues, and Organs” (#04237101) and grant #04454537 from the Ministry of Education, Science and Culture of Japan. We also want to thank Dr Hiroyuki Suga, Dr Yoichi Goto, Dr Eats-uya Hata, Dr Toshiyuki Takasago, Dr Akio Saeki and Dr Takehiko Nishioka for their help in making the left ventricular casts at the National Cardiovascular Center Research Institute in Osaka, Japan.; Proceedings of the 1993 ASME Winter Annual Meeting ; Conference date: 28-11-1993 Through 03-12-1993",

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Realistic three-dimensional left ventricular ejection determined from computational fluid dynamics

Abstract

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Other

ASJC Scopus subject areas

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