1) Dense echo of fetal intestinal canal
肠管强回声
1.
Conclusion:Dense echo of fetal intestinal canal is related to fetal abnormities,which should be much accounted of sonographers.
方法:对62例产前超声检查发现胎儿肠管强回声的孕妇进行追踪,分析其妊娠发展及转归。
2) Echogenic bowel
肠管回声增强
3) Bright band
强回声带
4) Echo intensity
回声强度
1.
An acoustic model was set up to estimate the concentration of suspended particulate matter(SPM) from ADCP echo intensity,which accounted not only for the attenuation caused by seawater and SPM,but also the corrections of non-spherical spreading in the transducer near-field and instrument.
利用黄河口海床基声学多普勒流速剖面仪(ADCP)的周日观测资料对悬浮物浓度进行了反演,反演过程中综合考虑了球面扩散、声学近场的非球面扩散、海水和悬浮颗粒的吸收衰减以及其他因素对回声信号的影响,结果表明在粒径保持相对稳定的情况下,利用ADCP仪回声强度反演悬浮物浓度具有较高的精度。
2.
The investigation was carried out during June 2006 using RD300K ADCP,echo intensity extracted from ADCP,temperature,salinity and current velocity were selected as input layer variables,suspended particle matter concentration of surface layer was calculated based on BP algorithm.
根据2006年7月在长江口区的20个站位使用RD300K型宽幅ADCP测量得到的实测资料,提取其回声强度信息,把回声强度、温度、盐度、流速作为输入层变量,利用BP算法反演悬浮泥沙浓度,结果表明此方法精度较高(平均相对误差为18。
补充资料：后方回声增强
后方回声增强
当病灶或组织的衰减甚小，其后方回声强度高于同一深度周围组织的现象叫后方回声增强。囊性病灶及液化坏死灶后方常出现这一征象。囊性病灶后壁增强效应明显。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条