Signal trimming and false positive reduction of post-segmentation swallowing accelerometry data

A technology of false positives and vibration data, applied in image data processing, diagnostic recording/measurement, informatics, etc., can solve the problems of expensive, VFSS cannot be executed daily, and achieve the effect of improving classification, reducing quantity, and improving feature extraction

Inactive Publication Date: 2018-12-21
HOLLAND BLOORVIEW KIDS REHABILITATION HOSPITAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, VFSS requires expensive equipment and specialized clinicians, which are not available in every medical institution
Therefore, VFSS cannot perform daily

Method used

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  • Signal trimming and false positive reduction of post-segmentation swallowing accelerometry data
  • Signal trimming and false positive reduction of post-segmentation swallowing accelerometry data
  • Signal trimming and false positive reduction of post-segmentation swallowing accelerometry data

Examples

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Embodiment

[0125] The following experimental examples present the development and support of scientific data for the concept of adaptive trimming and / or false positive removal improving the accuracy of automatically segmented accelerometer data.

[0126] Referring to the VFSS, biaxial acceleration signals were collected using a dual-axis accelerometer (ADXL327) with a sensitivity of ±2g from 264 consenting adult participants. The protocol was approved by the research ethics committees of the participating hospitals. Signals are collected via a two-channel custom USB audio interface, each channel including a high-pass filter with a 0.1Hz cutoff (to remove DC or gravity components from the signal) and a low-pass filter with a 3kHz cutoff. The signal for each axis is sampled at 10kHz with 12-bit resolution. Data is stored by a custom LabVIEW program running on a laptop for subsequent offline analysis. Ask participants to perform calibration tasks including resting, coughing, and counting....

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PUM

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Abstract

A method for quantifying a swallowing function can include subjecting swallowing segments and non-swallowing segments of vibrational data to processing selected from the group consisting of adaptive trimming, false positive reduction, and a combination thereof. Preferably the vibrational data represents swallowing activity, is from a sensor positioned on the throat of a patient, and is associatedwith at least one axis selected from the group consisting of an anterior-posterior axis and a superior-inferior axis. Preferably a processing module operatively connected to the sensor performs the processing of the swallowing segments and the non-swallowing segments of the vibrational data. A device comprising a processing module and a sensor such as a single-axis accelerometer or a dual axis accelerometer can perform one or more steps of the method.

Description

technical field [0001] The present disclosure generally relates to methods and devices for quantifying swallowing function. More specifically, the present disclosure relates to methods in which adaptive trimming and / or false positive removal improve the accuracy of automatically segmented accelerometer data. Background technique [0002] Any difficulty moving food or liquids from the mouth to the stomach is called dysphagia or dysphagia. Dysphagia adversely affects the patient's quality of life by increasing the risk of aspiration (entry of material into the airway below the true vocal cords). Causes of dysphagia include: changes in the anatomy necessary for swallowing due to surgery, cancer, trauma, or inflammation; genetic abnormalities of the swallowing organs; and nerve damage due to stroke, Parkinson's disease, cerebral palsy, and acquired brain injuries. [0003] The video fluoroscopic swallowing study (VFSS) is the gold standard for diagnosing dysphagia. In this pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11G06T7/10G16H40/60
CPCA61B5/7203A61B7/008A61B2562/0219G16H50/20A61B5/4205A61B5/6822A61B5/7282A61B2562/0204
Inventor H·默罕马蒂T·周
Owner HOLLAND BLOORVIEW KIDS REHABILITATION HOSPITAL
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