NDLI: Image enhancement with Gaussian filtering in time-domain microwave imaging system for breast cancer detection

Content Provider	IET Digital Library
Author	Kwon, S. Lee, H. K. Lee, S. H.
Abstract	A time-domain microwave imaging system with improved image quality is presented for early detection of breast cancer. The time-domain system has the advantage of short scan time compared with the frequency-domain system but suffers from low signal-to-noise ratio (SNR) due to high attenuation of the RF signal within the breast tissue. Signal averaging of repeated measurements can improve the SNR, but this method also smears the signal peaks due to the signal-averaged jitter, which adversely affects the reconstructed image quality. An image enhancement method using Gaussian bandpass filtering (BPF) is proposed for a time-domain imaging system. The results from the proposed method were compared with those from the deconvolution method, which is typically used to remove the effects of signal-averaged timing jitter in short pulse measurements. Simulation results with a 3D hemispherical homogeneous breast model containing tumour cells revealed improvement of the reconstructed image quality with the proposed method in the presence of timing jitter. The signal-to-mean ratio was increased from 6.46 to 14.15 with BPF, whereas deconvolution resulted in an increase to 9.36. Simulation results with a non-homogeneous realistic breast model also showed image enhancement with the proposed method.
Starting Page	342
Ending Page	344
Page Count	3
ISSN	00135194
Volume Number	52
e-ISSN	1350911X
Issue Number	Issue 5, Mar (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/52/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2015.3613
Journal	Electronics Letters
Publisher Date	2016-01-22
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3D Hemispherical Homogeneous Breast Model Band-pass Filter Biology And Medical Computing Biomedical Measurement And Imaging BPF Breast Cancer Breast Cancer Detection Breast Tissue Computer Vision And Image Processing Technique Filtering Method in Signal Processing Gaussian Bandpass Filtering Gaussian Processes Health Physics Image Enhancement Image Enhancement Method Image Reconstruction Improved Image Quality Mathematical Analysis Medical And Biomedical Uses of Field Medical Image Processing Optical, Image And Video Signal Processing Patient Diagnostic Method And Instrumentation Probability Theory Radiations Radioactivity Signal-averaged Timing Jitter Statistics Stochastic Linearised SCUC Time Domain Analysis Time-domain Microwave Imaging System Tumour Cell
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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