Automated analysis for scintigraphic evaluation of gastric emptying using invariant moments.

This study introduces a method for automated analysis of the standard solid-meal gastric emptying test. The purpose was to develop a diagnostic tool to characterize more reproducibly abnormalities of solid-phase gastric emptying. The processing of gastric emptying is automated using geometrical moments that are invariant to scaling, rotation, and shift. Twenty subjects were studied. The first step was to obtain images of the stomach using a nuclear gamma camera immediately after the subject had eaten a radio-labeled meal. The second step was to process and analyze the images by a recently developed automated gastric emptying analysis (AGEA) method, which determines the gastric contour and the geometrical properties include such parameters as area, centroid, orientation, and moments of inertia. Statistical tests showed that some of the moments were sensitive to the patient's gastric status (normal versus abnormal). The difference between the normal and abnormal patients became noticeable approximately 1 h after meal ingestion.

[1]  J. Malagelada.  Quantificantion of gastric solid-liquid discrimination during digestion of ordinary meals. , 1977, Gastroenterology.

[2]  J. Sorenson,et al.  Technical factors in gastric emptying studies. , 1983, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[3]  J. Kalbfleisch,et al.  Gastric emptying in patients with diabetes mellitus. , 1984, Gastroenterology.

[4]  Joan S. Weszka,et al.  A survey of threshold selection techniques , 1978 .

[5]  Rama Chellappa,et al.  Stochastic models for closed boundary analysis: Representation and reconstruction , 1981, IEEE Trans. Inf. Theory.

[6]  S. S. Reddi,et al.  Radial and Angular Moment Invariants for Image Identification , 1981, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[7]  J. Behar,et al.  Pathogenesis of diabetic gastroparesis: A pharmacologic study , 1980 .

[8]  G. Griffith,et al.  Measurement of rate of gastric emptying using chromium-51. , 1966, Lancet.

[9]  Ming-Kuei Hu,et al.  Visual pattern recognition by moment invariants , 1962, IRE Trans. Inf. Theory.

[10]  J. Duvernoy.  Optical-digital processing of directional terrain textures invariant under translation, rotation, and change of scale. , 1984, Applied optics.

[11]  R. Horton,et al.  Determination of the Emptying-time of the Stomach by Use of Enteric-coated Barium Granules , 1965, British medical journal.

[12]  A. Zinsmeister,et al.  Relation between antral motility and gastric emptying of solids and liquids in humans. , 1985, The American journal of physiology.

[13]  Fisher Rs,et al.  Scintigraphic techniques for the study of gastrointestinal motor function. , 1986 .

[14]  N. Otsu.  A threshold selection method from gray level histograms , 1979 .

[15]  M. Teague.  Image analysis via the general theory of moments , 1980 .

[16]  K. S. Park,et al.  A three-dimensional Fourier descriptor for human body representation/reconstruction from serial cross sections. , 1987, Computers and biomedical research, an international journal.

[17]  Demetri Psaltis,et al.  Recognitive Aspects of Moment Invariants , 1984, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[18]  Andrew K. C. Wong,et al.  A new method for gray-level picture thresholding using the entropy of the histogram , 1985, Comput. Vis. Graph. Image Process..