Detection of small bowel slow-wave frequencies from noninvasive biomagnetic measurements.
Detection of small bowel slow-wave frequencies from noninvasive biomagnetic measurements.
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DOI：
10.1109/tbme.2009.2024087
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发表时间：
2009-09
期刊：
影响因子：
--
通讯作者：
Richards WO
中科院分区：
文献类型：
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作者：
Erickson JC;Obioha C;Goodale A;Bradshaw LA;Richards WO
我们报道了一种从非侵入性生物磁测量中识别小肠电活动慢波频率的新方法。对超导量子干涉装置(SQUID)磁强计的测量数据进行了预处理，以消除基线漂移和高频噪声。随后，使用众所周知的SOBI算法来分离底层源信号。一个简单的分类方案可以识别一些SOBI成分，并将其分配到小肠的一段。在12名受试者中，有10名受试者的慢波频率清楚地显示在每分钟0.09-0.25周之间。该方法的灵敏度为40.3%~55.9%，假阳性率为0%~8.6%。这项技术可能会被用来帮助诊断胃肠道疾病，并避免一些探索性手术。
We report a novel method for identifying the small intestine electrical activity slow wave frequencies from noninvasive biomagnetic measurements. Superconducting QUantum Interference Device (SQUID) magnetometer measurements are pre-processed to remove baseline drift and high frequency noise. Subsequently, the underlying source signals are separated using the well-known SOBI algorithm. A simple classification scheme identifies and assigns some of the SOBI components to a section of small bowel. Slow wave frequencies were clearly identified in 10 out of 12 test subjects to within 0.09–0.25 cycles per minute. The method is sensitive at the 40.3–55.9% level, while false positive rates were 0–8.6%. This technique could potentially be used to help diagnose gastrointestinal ailments and obviate some exploratory surgeries.