彩色超声诊断仪主要技术指标

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                    <table cellpadding="0" cellspacing="0" width="670" height="300"><tbody style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;"><tr style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;"><td style="padding-top: 0px; word-wrap: break-word; word-break: break-all; max-width: 100%; line-height: 29.6px; text-indent: 0em; font-family: simsun; box-sizing: border-box !important;"><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">一、分辨力</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 分辨力的高低是衡量超声仪器性能的主要指标，根据单一声束线上所能分辨两个微小目标的能力，可分为三类：</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 1、纵向分辨力(轴向分瓣力）：指在声束传播轴线上所测出的分辨两个细小目标的能力。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 2、侧向分辨力：指在与声束垂直的平面上，在探头长轴方向上所测出的分辨两个细小目标的能力。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 3、横向分辨力（径向分瓣力）：指在与声束垂直的平面上，在探头短轴方向上所测出的分辨两个细小目标的能力。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 通常3-3.5MHZ探头的纵向分辨力为1MM，横向分辨力为2MM，侧向分辨力为1.5-2MM左右。数值越小，说明仪器的图像分辨力越高。</p><p style="text-align:center"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhveoLmrhdk47ziav4AyangL9Z43StbNDPiarIqS0YLwu8pAnJEgXJDzMtMWIsib0VqFQRfc9URMv1dw8w/0?wx_fmt=jpeg" data-ratio="0.7508532423208191" data-w="293"  /></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">二、灰阶：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 二维黑白图像由不同明暗层次的光点组成，这种明暗度的层次称为灰阶，明暗层次越丰富，即灰阶数越多，图像就越细腻。一般东芝彩超多有256个灰阶。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">三、灵敏度（增益）：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 指在某一具体条件下能够探测出界面声阻抗相差大小的能力。灵敏度高时对声阻差改变很小的界面也能产生反射波，灵敏度低时需要界面的声阻差较大时才能有反射波。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 超声仪器灵敏度的调节有总增益和分段增益（时间增益补偿）之分。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 灵敏度（增益）的测量单位为分贝（dB)。一般东芝彩超的B模式增益多在62-100dB之间调节。 &nbsp;</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">四、动态范围：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 指在仪器灰阶的总范围内设定一个可上下移动的相对固定范围，以侧重显示较弱的回声（向下移）或较强的回声（向上移）。东芝APLIO彩超拥有175dB的超大动态范围，使人体内的微弱反射信号和高强度反射信号均能充分体现，获取得清晰完整的组织图像。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">　ü动态范围：东芝APLIO彩超拥有175dB的超大动态范围，使人体内的微弱反射信号和高强度反射信号均能充分体现，获取得清晰完整的组织图像。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">五、图像帧频：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 实时动态的超声图像是由一帧帧超声扫描图组合在一起构成的（和电影是由一张张电影胶片组成一样）。帧频是指每秒钟组成实时动态超声图像的超声扫描图的帧数。东芝Aplio彩超的二维图像最大帧频数可达500帧/秒。(角度和深度)</p><p style="text-align:center"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhveoLmrhdk47ziav4AyangL9ZxrI5axJJhs12X4SL8vCSgREU7Fe7WULZ3oXMkCqD33QrM24jCyCiccQ/0?wx_fmt=jpeg" data-ratio="0.958904109589041" data-w="438"  /></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">六、图像深度：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 指在超声图像上显示的超声波在人体内扫描的深度。东芝APLIO彩超的最大图像深度可达28cm。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">七、通道数：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 指探头发射超声或接收回波信号的数字化通道。东芝APLIO彩超的通道数可达2304通道。</p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; word-wrap: break-word; box-sizing: border-box !important;">八、测量速度：</strong></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 指多普勒测出的每秒钟血液流动的距离。多分为最大流速和最低流速。东芝APLIO彩超的多普勒测量的最大速度可达PW：7.6米/秒，CW：20.66米/秒，最低速度：0.5毫米/秒。&nbsp;</p></td></tr></tbody></table><p><br  /></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; color: rgb(62, 62, 62); line-height: 25.6px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-family: Arial, Verdana, sans-serif; font-size: 14px; line-height: 24px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(249, 249, 249);">广州市设备维修有限公司</span><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: pre-wrap; color: rgb(62, 62, 62); font-size: 12px; line-height: 24px; font-family: Arial, Verdana, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><br style="max-width: 100%; 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