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Analysis of surface geometry of the human stomach using real‐time 3‐D ultrasonography in vivo
Author(s) -
Liao D.,
Gregersen H.,
Hausken T.,
Gilja O. H.,
Mundt M.,
Kassab G.
Publication year - 2004
Publication title -
neurogastroenterology and motility
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.489
H-Index - 105
eISSN - 1365-2982
pISSN - 1350-1925
DOI - 10.1111/j.1365-2982.2004.00522.x
Subject(s) - curvatures of the stomach , stomach , antrum , fundus (uterus) , curvature , geometry , anatomy , human stomach , medicine , mathematics , radiology
The objective of this study was to develop an analytical method to describe the three‐dimensional (3‐D) geometry of the gastric antrum, gastric fundus and the whole stomach. The Fourier series method was used to simulate the organ surface geometry obtained from a 3‐D ultrasound system. Data generated from eight antrums and three whole stomachs, at pressures of approximately 7 cmH 2 O, were used for lumen curvature calculations. The principal curvatures spatial distributions were non‐homogeneous in the gastric antrum, gastric fundus and the stomach due to their complex geometry. The maximum longitudinal principal curvature in the antrum, fundus and total stomach were, respectively, 0.460 ± 0.066, 0.583 ± 0.087 and 1.123 ± 0.328, whereas the maximum circumferential curvature were 1.192 ± 0.090, 3.649 ± 1.574 and 8.444 ± 3.424, respectively. The present study provides an analytical tool for characterizing the complex 3‐D geometry of an organ‐like the human stomach reconstructed by clinical imaging modalities. Providing an average tension for the stomach does not reflect the large variation in tension throughout the stomach wall.