title: Noninvasive feature-based detection of delayed gastric emptying in humans using neural networks.
abstract: Radioscintigraphy is currently the gold standard for gastric emptying test which involves radiation exposure and is considerably expensive. We present a feature-based detection approach using neural networks for the noninvasive diagnosis of delayed gastric emptying from the cutaneous electrogastrogram (EGG). Simultaneous recordings of the EGG and scintigraphic gastric emptying test were made in 152 patients with symptoms suggestive of delayed gastric emptying. Spectral analyses were performed to derive EGG parameters which were used as the input of the neural network. The result of scintigraphic gastric emptying was used as the gold standard for the training and testing of the neural network. A correct classification of 85% (a specificity of 89% and a sensitivity of 82%) was achieved using the proposed method.
authors.affiliation: University of Texas Medical Branch, Department of Internal Medicine, Galveston 77555-0764, USA. jianchen@utmb.edu
authors.forename: J D
authors.initials: JD
authors.lastname: Chen
authors.forename: Z
authors.initials: Z
authors.lastname: Lin
authors.forename: R W
authors.initials: RW
authors.lastname: McCallum
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016477:Artifacts; D004576:Electromyography / Q000379:methods*; D005260:Female; D005746:Gastric Emptying; D006801:Humans; D008297:Male; D008875:Middle Aged; D016571:Neural Networks, Computer; D012815:Signal Processing, Computer-Assisted; D013272:Stomach Diseases / Q000175:diagnosis*