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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/24277

Title: Cough Detection and Forecasting for Radiation Treatment of Lung Cancer
Authors: Qiu, Zigang Jimmy
Advisor: Kwong, Raymond H.
Alasti, Hamideh
Department: Electrical and Computer Engineering
Keywords: cough detection
arma forecasting
respiratory gating
breathing measurement
gaussian mixture model
4DCT
Issue Date: 6-Apr-2010
Abstract: In radiation therapy, a treatment plan is designed to make the delivery of radiation to a target more accurate, effective, and less damaging to surrounding healthy tissues. In lung sites, the tumor is affected by the patient’s respiratory motion. Despite tumor motion, current practice still uses a static delivery plan. Unexpected changes due to coughs and sneezes are not taken into account and as a result, the tumor is not treated accurately and healthy tissues are damaged. In this thesis we detail a framework of using an accelerometer device to detect and forecast coughs. The accelerometer measurements are modeled as a ARMA process to make forecasts. We draw from studies in cough physiology and use amplitudes and durations of the forecasted breathing cycles as features to estimate parameters of Gaussian Mixture Models for cough and normal breathing classes. The system was tested on 10 volunteers, where each data set consisted of one 3-5 minute accelerometer measurements to train the system, and two 1-3 minute accelerometer measurements for testing.
URI: http://hdl.handle.net/1807/24277
Appears in Collections:Master
The Edward S. Rogers Sr. Department of Electrical & Computer Engineering - Master theses

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