Optimum Unit Time on Calculating Occurrence Frequency of Bowel Sounds for Real-Time Monitoring of Bowel Peristalsis

Abstract

Long-Term and real-time bowel sound recording/analysis is useful for monitoring activity of bowel peristalsis clinically and industrially. We have studied its application with food design, nutrition management, dietary therapy, critical care and so on in mind. Therefore, we built a BS measurement/analysis system including development of the dedicated sensor for BS and the abdomen audible signal processing method. Although we got some useful knowledge as the result, the matter to consider is still left behind. We had carried out evaluation of peristaltic activity of an intestine, focusing on change of the number of bowel sounds generating per unit time. However we have not examined the optimal length of this unit time yet. Here, based on an easy experimental examination, we report that the optimal unit time length for calculating occurrence frequency of bowel sounds is estimated as one to two minutes. 

Automated Bowel Sound and Motility Analysis with CNN Using a Smartphone

“…BSs can be analyzed directly by a physician or using a learning model that recognizes sounds collected using a special recording instrument [ 4 , 6 , 8 , 9 , 10 , 11 ]. For instance, Craine et al [ 4 ] used a method involving stationary-nonstationary filters with wavelet transformation, whereas Wang et al [ 7 ] used an artificial neural network and Sakata and Suzuki [ 11 ] used a classification algorithm capturing sound features.…”

“…BSs can be analyzed directly by a physician or using a learning model that recognizes sounds collected using a special recording instrument [ 4 , 6 , 8 , 9 , 10 , 11 ]. For instance, Craine et al [ 4 ] used a method involving stationary-nonstationary filters with wavelet transformation, whereas Wang et al [ 7 ] used an artificial neural network and Sakata and Suzuki [ 11 ] used a classification algorithm capturing sound features. Although BS measurement is not invasive and various analysis methods have been established, it requires specialized devices such as stethoscopes and contact-type recording devices that are only available in a hospital environment.…”