Abstract:
:To investigate the features of the gastric interdigestive pressure activity under normal physiological conditions, we have developed the wireless radiotelemetry capsule based on a telemetry technique. Twelve healthy volunteers participated in this study. Pressure activity data which are an important index of gastric motility can be obtained from the wireless radiotelemetry capsule. But the capsule only records single-dimensional pressure time series which may contain a few interdependent components simultaneously. Automated embedding phase space reconstruction algorithm is employed to reconstruct multi-dimensional phase space. Then the dominant and separated component of the gastric contractions is identified using FastICA algorithm. Finally the use of Hilbert Huang transform method for analyzing the characters of gastric motility is investigated. The results show that the proposed method is an effective approach for the analysis of the gastric pressure series.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Huang B,Yan G,Zan P,Li Qdoi
10.1016/j.medengphy.2008.04.017subject
Has Abstractpub_date
2009-04-01 00:00:00pages
320-7issue
3eissn
1350-4533issn
1873-4030pii
S1350-4533(08)00107-0journal_volume
31pub_type
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