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1
題名:Use of Nakagami Distribution and Logarithmic Compression in Ultrasonic Tissue Characterization     (10點)
著者:Po-Hsiang TsuiChih-Chung HuangShyh-Hau Wang
出版地區:台灣
出版城市:台南市
學科:醫學綜合
關鍵字:Nakagami model ; Ultrasonic backscattering ; Logarithmic compression
刊名:Journal of Medical and Biological Engineering
卷期:26卷2期(2006.6)
頁碼:69-73
語言:英語
摘要: 英文摘要PDF

Our previous simulation study showed that the Nakagami parameter estimated using ultrasonic backscattered envelopes compressed by logarithmic computation, denoted by m(subscript log), is more sensitive than the original Nakagami parameter m calculated using uncompressed envelopes for detecting the variation of scatterer concentration in tissues. This study made measurements on phantoms in order to further verify the performance of m(subscript log) in quantifying the properties of biological tissues. The ultrasonic backscattered signals from phantoms with different scatterer concentrations were acquired using 5 MHz focused and non-focused transducers. The Hilbert transform and logarithmic compression were in turn applied to the backscattered signals to obtain the uncompressed and compressed envelopes for estimating m and m(subscript log). The experimental results showed that, for both focused and non-focused transducers, the m(subscript log) parameter is indeed more sensitive than the m parameter in differentiating various scatterer concentrations. This may assist in the classification of scatterer properties using the Nakagami statistical model.


    

本卷期目次
Journal of Medical and Biological Engineering 26卷2期 (2006.6)
Fusion of Multimodality Medical Images Assisting Acute Pyelonephritis Diagnosis/ Chia-Hsiang WuYen-Ting ChenNan-Tsing ChiuYung-Nien Sun
Effects of Facet Capsule Incision on Biomechanical Properties of Sheep Cervical Spine/ Shih-Chang ChuangChing-Wei ChengTi-Sheng ChangWei-Min ChiJian-Horng Chen
Use of Nakagami Distribution and Logarithmic Compression in Ultrasonic Tissue Characterization/ Po-Hsiang TsuiChih-Chung HuangShyh-Hau Wang
A Generic Grip Strength Training and Evaluation System/ Cheng-Huei YangHsiu-Chen HuangCheng-Hong Yang
Remote Monitoring of Mobility Changes of the Elderly at Home Using Frequency Rank Order Statistics/ Jiann-Shing ShiehChen-Tse ChuangXiang WangPen-Yi Kuo
CdSe Quantum Dots Induce Apoptosis via Activation of JNK and PAK2 in a Human Osteoblast Cell Line/ Hsiang-Yu LuNion-Heng ShiaoWen-Hsiung Chan
 
   
 
   

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