Effect of pulse repetition frequency on microcalcification detection in color flow imaging
Effect of pulse repetition frequency on microcalcification detection in color flow imaging
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DOI：
10.7567/jjap.53.07kf15
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发表时间：
2014-07-01
影响因子：
1.5
通讯作者：
Liu, Lei
中科院分区：
文献类型：
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作者：
Tanabe, Masayuki;Naito, Yu;Liu, Lei
闪烁标志是一种现象，涉及静止的强反射介质后面的快速交替的彩色像素，其中预期在多普勒模式下会有声影。然而，这种征兆发生的机制尚不清楚。在这项研究中，我们研究了脉冲重复频率(PRF)对模拟软组织体模中直径为973微米的玻璃微珠回波信号的影响，并观察了同一玻璃微珠的闪烁信号的出现模式。观察到，随着PRF的增加，IQ信号的方差和闪烁信号的出现频率减小。(C)2014年日本应用物理学会
The twinkling sign is a phenomenon involving rapidly alternating color pixels behind a stationary strongly reflecting medium where an acoustic shadow is expected in the Doppler mode. However, the mechanism of the occurrence of such a sign is not yet clarified. In this study, to clarify the mechanism, we investigated effect of pulse repetition frequency (PRF) on echo signals from a glass bead (diameter 973 mu m) in a soft-tissue-mimicking phantom, and observed the appearance pattern of the twinkling sign of the same glass bead. It was observed that the variance of the IQ signal and the appearance frequency of the twinkling sign decreased when PRF increased. (C) 2014 The Japan Society of Applied Physics