Intuitive modeling of right ventricular shape

Peter J. Yim, Belinda Ha, Jose I. Ferreiro, G. William Henry, Craig A. Branch, Timothy A. Johnson, Carol L. Lucas

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

2 Scopus citations

Abstract

A quantitative characterization of the shape of the right ventricle (RV) of the heart is needed for accurate modeling of the mechanics of the ventricle as well as for better measuring the volume of the ventricle from technologies such as 2D ultrasound, bi-planar ventriculography, and sonomicrometry. A technique was thus developed for modeling RV shape. First, a high-resolution MR image set was obtained of the freshly excised lamb heart under various passive pressurizations of both ventricles ranging from 5 to 30 cmH2O simulating end-diastole in the beating heart. Typically, 2-3 full images were obtained for each heart. Images were obtained with a multislice spin-echo T1-weighted sequence with the slice plane orientation early equal to the short-axis view of the heart. A 3D characterization of shape was obtained by first characterizing inter-slice changes in shape and orientation and then characterizing the shape of a single representative slice. The slice chosen to represent the RV was in the region directly below the tricuspid valve since it is both near to the apex-base center of the RV and has the greatest size. Intuitive deformations were applied to an initial circular arc anchored at the endpoints of the freewall and initially passing through a point near the center of the freewall contour, so as to best match the true freewall contour.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages373-382
Number of pages10
ISBN (Print)0819424447
StatePublished - Dec 1 1997
Externally publishedYes
EventMedical Imaging 1997: Physiology and Function from Multidimensional Images - Newport Beach, CA, USA
Duration: Feb 23 1997Feb 25 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3033
ISSN (Print)0277-786X

Other

OtherMedical Imaging 1997: Physiology and Function from Multidimensional Images
CityNewport Beach, CA, USA
Period2/23/972/25/97

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Yim, P. J., Ha, B., Ferreiro, J. I., Henry, G. W., Branch, C. A., Johnson, T. A., & Lucas, C. L. (1997). Intuitive modeling of right ventricular shape. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 373-382). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3033). Society of Photo-Optical Instrumentation Engineers.