A novel biomagnetic method to study gastric antral contractions.
A novel non-invasive method to study the motion associated with gastric antral contractions is discussed. The method is based on magnetic flux changes detected by an a.c. biosusceptometer, produced by a magnetic test meal within the stomach. Measurements are made at the surface of the torso and are easy to perform. Simultaneous measurements were made with electrogastrography and scintigraphy showing remarkable coincidence. The effect of a drug on the amplitude of antral contractions was also assayed with the new method.
Miranda
J R
JR
Departamento de Física e Matemática, FFCLRP-Universidade de São Paulo, Ribeirão Preto-SP, Brazil.
Oliveira
R B
RB
Sousa
P L
PL
Braga
F J
FJ
Baffa
O
O
D000328:Adult; D055592:Biophysical Phenomena; D001703:Biophysics; D002086:Butylscopolammonium Bromide / Q000494:pharmacology; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D005260:Female; D005769:Gastrointestinal Motility / Q000187:drug effects / Q000502:physiology; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D018727:Muscarinic Antagonists / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects / Q000502:physiology; D011706:Pyloric Antrum / Q000187:drug effects / Q000502:physiology; D013270:Stomach / Q000187:drug effects / Q000502:physiology*
D018727:Muscarinic Antagonists; D002086:Butylscopolammonium Bromide