【摘 要】
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An ultrasound image fusion method based on the local fundamental and harmonic spectral peak ratio(LFHR)is proposed.First,the fundamental and harmonic components of the ultrasonic radio frequency(RF)signals are separated.The weights of both components are
【机 构】
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Department of Electronic Engineering,Information School,Yunnan University Kunming 650091;The Third A
论文部分内容阅读
An ultrasound image fusion method based on the local fundamental and harmonic spectral peak ratio(LFHR)is proposed.First,the fundamental and harmonic components of the ultrasonic radio frequency(RF)signals are separated.The weights of both components are determined according to their spectral peak ratio.Then,the fused RF signals are produced by weighted averaging the fundamental and harmonic components.Finally,the ultrasound fusion images are generated using the framework of demodulation,logarithmic compression and interpolation/down-sampling.Experimental results based on simulations of inhomogeneous cysts have shown that the contrast,contrast-to-noise ratio,and tissue-to-clutter ratio of the fusion images obtained from the proposed method are 2.44,2.80,and 3.22 times higher than the original images,respectively.The harmonic energy is increased by 83％.The clinical experiments with the human carotid artery have also validated the effectiveness of the proposed method.In summary,the fused B-mode images produced by the LFHR method possess rich details,clear tissue contour,and improved quality.
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