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An ellipsoidal shell model for volume estimation of the right ventricle from magnetic resonance images.

Abstract：

RATIONALE AND OBJECTIVES:I developed a volume estimation technique for the crescentic volume of the right ventricle (RV) of the heart. A geometric model was desired to avoid the lengthy data collection and reduction required by Simpson's rule. METHODS:An ellipsoidal shell model was developed that requires only simple mathematics and that resembles the RV shape. RV cast volumes were obtained by water displacement and Simpson's rule and model-based calculations using magnetic resonance (MR) imaging. RESULTS:Model-based estimates correlated well with water displacement volumes (r = 0.924), with a slope not significantly different from unity. Simpson's rule results showed a higher correlation (r = 0.994), but it required longer acquisition and processing. Geometric irregularity in the RV shape required no modification in mathematics. CONCLUSION:The model provides reliable RV volume estimates from two MR image planes. The mathematics provides a simple approach to a relatively complex, crescentic shape. Short times for data acquisition and analysis suggest the potential for time savings during routine clinical measurements.

journal_name

Acad Radiol

journal_title

Academic radiology

authors

Denslow S

doi

10.1016/s1076-6332(12)80006-7

subject

Has Abstract

pub_date

1994-12-01 00:00:00

pages

345-51

issue

4

eissn

1076-6332

issn

1878-4046

journal_volume

1

pub_type

杂志文章

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