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項次 書目
1
題名:Noise Effect on the Performance of Nakagami Image in Ultrasound Tissue Characterization     (12點)
出版地區:台灣
出版城市:台南市
學科:醫學綜合
關鍵字:Nakagami distribution ; Parametric image ; Noise
刊名:Journal of Medical and Biological Engineering
卷期:28卷4期(2008.12)
頁碼:197-202
語言:繁體中文
摘要: 英文摘要PDF

Conventional ultrasonic B-mode images qualitatively describe tissue structures, but they are unsuitable for quantitative analyses of scatterer properties. Recent studies have developed an ultrasonic parametric imaging technique based on the Nakagami statistical distribution, and its ability to quantify scatterer concentrations has been confirmed. The aim of the present study was to further explore the performances of the Nakagami image under conditions of different signal-to-noise ratios (SNRs). Experiments on a tissue-mimicking phantom were carried out. The results show that the noise effect degraded the performance of the Nakagami image in tissue characterization. When the signal SNR decreased by 8 dB, the contrast-to-noise ratio (CNR) of the Nakagami image for the hyperechoic region decreased by 27%, and that of the hypoechoic one decreased by 80%. These results indicate that the Nakagami image behaves well in identifying regions with high scatterer concentrations but does not perform well when both the scatterer concentration and SNR are low.


    

本卷期目次
Journal of Medical and Biological Engineering 28卷4期 (2008.12)
A Preliminary Attempt to Understand Compatibility of Photoplethysmographic Pulse Rate Variability with Electrocardiogramic Heart Rate Variability/ Ping ShiSi-Jung HuYi-Sheng Zhu
Evaluation of Ultra-thin Acid-etched Titanium Foils as Guided Tissue Regeneration Membrane/ Bai-Shuan LiuTsung-bin HuangChen-Jung ChangAn-Yu Tai
In Vitro Estimation of Glenohumeral Joint Center of Rotation/ Jia-Hao ChangAr-Tyan HsuGuan-Liang Chang
Noise Effect on the Performance of Nakagami Image in Ultrasound Tissue Characterization
An in-vitro Experiment on Lysing Adipose Tissue by Shock Waves/ Shen-Min LiangChun-Neng YehJing-Jou YanLong-Ray WanJing-Wei Lee
A Modified Geometric-based Active Contour Model for Lung Segmentation in Magnetic Resonance Images/ Alireza OsarehBita Shadgar
Reconstructed Volume Loss on Cone-beam Computed Tomography Images of Moving Targets/ Hsiao-Ling ChaoWei-Li ChenChih-Chung HuJian-Kuen WuJason Chia-Hsien Cheng
Heart Rate Extraction from Photoplethysmogram Waveform Using Wavelet Multi-resolution Analysis/ Tsu-Hsun FuShing-Hong LiuKuo-Tai Tang
 
   
 
   

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