|
|
<p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: ' ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">CT和MRI是放射科检查的两大核心，然而，对于这两样检查的选择很多人都迷惑不已。本篇主要介绍它们的区别、各自的优缺点及对于某些疾病，优先选择什么检查。</p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">CT与MRI的区别</p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">CT是指计算机断层摄影，用计算机控制X线球管和探测器，使环绕人体某一部位旋转，根据人体组织对X线的吸收差异，再经过一系列图像后处理而成像。磁共振是把人体放置在一个强大的磁场中，通过射频脉冲激发人体内氢质子，发生核磁共振，然后接受质子发出的核磁共振信号，经过梯度场三个方向的定位，再经过计算机的运算，可做横断、矢状、冠状和任意切面的图像。</p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);"><strong>CT与MRI各自的优缺点</strong></p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">CT成像只有不同组织间密度的差异，而 MRI由不同的扫描序列可形成各种图像，如T1加权像、T2加权像、质子密度像等，还有水成像、水抑制成像、脂肪抑制、弥散成像、波谱成像、功能成像等;MRI软组织分辨率较好，但CT空间分辨率较高;带有心脏起搏器的患者或有某些金属异物的部位不能作MR的检查，</p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">此外，MRI噪声非常大、时间较长，对于婴幼儿来说需要保持绝对安静，否则会影响成像质量。MRI另一区别于CT的优点是无电离辐射。<img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz_jpg/A1DicCH9Vl6PxOHe1ichd19vOOUpEPJ1qsiaVOYIYH99GOoKMSSvTibldQiaqqRLAaia3Jic1PZn9qaHlITKHIW4dtMmQ/0?wx_fmt=jpeg" style="line-height: 25.6px; white-space: pre-wrap;" data-ratio="1.3328125" data-w="1280" /></p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);"><strong>优先选择检查方式</strong></p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">CT的密度分辨率高，通过采用造影增强扫描以明确纵隔和肺门有无肿块或淋巴结增大、支气管有无狭窄或阻塞，对原发和转移性纵隔肿瘤、淋巴结结核、中心型肺癌等的诊断，起着主要的诊断作用;肺内间质、实质性病变也可以得到较好的显示;对胸膜、膈、胸壁病变，也可清楚显示;心脏方面主要是心包病变的诊断、心腔及心壁的显示;血管方面显示冠状动脉的钙化、大血管壁的钙化及动脉瘤改变等。</p><p style="margin-top: 1em; color: rgb(34, 34, 34); font-family: 'ingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', 'Helvetica Neue', Arial, sans-serif; font-size: 16px; line-height: 32px; white-space: normal; background-color: rgb(255, 255, 255);">MRI主要检查脑内血肿、脑外血肿、脑肿瘤、颅内动脉瘤、动静脉血管畸形、脑缺血、椎管内肿瘤、脊髓空洞症和脊髓积水等颅脑常见疾病，同时对腰椎椎间盘后突、原发性肝癌等疾病的诊断也很有效。</p><p><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz_jpg/A1DicCH9Vl6PxOHe1ichd19vOOUpEPJ1qsfNFicsG89BnYcvxhTbTCHia4nYPgMbicR1MVyYibHcR8QvlHceZ9yN3ucw/0?wx_fmt=jpeg" style="" data-ratio="1.3328125" data-w="1280" /></p><p><br /></p><section class="pEditor " style="line-height: 25.6px; white-space: normal;"><section data-css="background-color: rgb(239, 239, 239);border-radius: 5px;border: 1px solid rgb(153, 153, 152);margin: 0px;padding: 5px" style="padding: 5px; border-radius: 5px; border: 1px solid rgb(131, 147, 209); text-align: center; background-color: rgb(239, 239, 239);"><section data-css="color: inherit;display: inline-block;margin: 1px" style="margin: 1px; color: inherit; display: inline-block;"><span style="padding: 2px 10px; border-color: rgb(204, 204, 204); border-radius: 2px; color: rgb(1, 1, 3); font-weight: bold; font-size: 18px; background-color: rgb(109, 205, 25);">推荐阅读</span></section><section data-css="color: inherit;margin: 0px;padding: 10px" style="padding: 10px; color: inherit;"><p style="line-height: 1.75em; text-align: left;"></p><ol class=" list-paddingleft-2" style="list-style-type: lower-alpha;"><li><p style="line-height: 1.75em; text-align: left;">没有了GPS,CMEF那些井喷的CT<br /></p></li><li><p style="line-height: 1.75em; text-align: left;">终于知道CT机为什么要按时保养了！<br /></p></li><li><p style="line-height: 1.75em; text-align: left;">哥卖的是技术，不是配件！请尊重我们的服务价值<br /></p></li><li><p style="line-height: 1.75em; text-align: left;">如果你有一个做医疗设备维修的朋友<br /></p></li><li><p style="line-height: 1.75em; text-align: left;">中国医疗器械维修企业推介（1）</p></li><li><p style="line-height: 1.75em; text-align: left;">2015年各行业年平均工资出炉 来看你达标了吗？</p></li></ol></section></section></section><p></p><section class="pEditor " style="line-height: 25.6px; white-space: normal;"><section style="border: 0px; max-width: 100%; font-size: 16.3636px; text-align: center; word-wrap: break-word !important; box-sizing: border-box !important;"><section style="max-width: 100%; display: inline-block; word-wrap: break-word !important; box-sizing: border-box !important;"><section style="max-width: 100%; display: inline-block; word-wrap: break-word !important; box-sizing: border-box !important;"><p style="max-width: 100%; word-wrap: normal; min-height: 1em; box-sizing: border-box !important;"><strong style="max-width: 100%; text-transform: uppercase; box-sizing: border-box !important; word-wrap: break-word !important;"><br /></strong></p><p style="max-width: 100%; word-wrap: normal; min-height: 1em; box-sizing: border-box !important;"><strong style="max-width: 100%; text-transform: uppercase; box-sizing: border-box !important; word-wrap: break-word !important;">·END·</strong><br style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;" /></p><p style="max-width: 100%; word-wrap: normal; min-height: 1em; box-sizing: border-box !important;"><strong style="max-width: 100%; text-transform: uppercase; box-sizing: border-box !important; word-wrap: break-word !important;"><br /></strong></p></section><section class="gulangutitle" style="margin: 0em 0.5em 0.1em; max-width: 100%; color: rgb(16, 146, 113); font-size: 1.8em; line-height: 1; font-weight: inherit; word-wrap: break-word !important; box-sizing: border-box !important;"><p><span style="font-size: 20px;"><strong class="pBrush" style="padding-right: 50px; padding-bottom: 3px; padding-left: 50px; border-bottom-style: solid; border-bottom-width: 1px; border-color: rgb(2, 2, 2); display: block; line-height: 28px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"></strong></span></p></section><section class="pbrush" style="margin: 0.5em 1em; max-width: 100%; font-size: 1em; line-height: 1; font-weight: inherit; text-align: inherit; text-decoration: inherit; color: rgb(120, 124, 129); word-wrap: break-word !important; box-sizing: border-box !important;"><p><span style="font-size: 14px;"><strong><span class="pBrush" style="max-width: 100%; color: rgb(131, 104, 28); font-family: Avenir, sans-serif; line-height: 28px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%;">ID: </span><span style="max-width: 100%;"></span></span></strong><strong><span class="pBrush" style="max-width: 100%; color: rgb(131, 104, 28); font-family: Avenir, sans-serif; line-height: 28px; box-sizing: border-box !important; word-wrap: break-word !important;"></span></strong></span></p><p><span style="font-size: 14px;"><strong><span class="pBrush" style="max-width: 100%; color: rgb(131, 104, 28); font-family: Avenir, sans-serif; line-height: 28px; box-sizing: border-box !important; word-wrap: break-word !important;">大家都在关注的医疗器械维修新媒体平台</span></strong></span></p><p><strong style="color: rgb(131, 104, 28); font-family: Avenir, sans-serif; font-size: 16px; line-height: 28px;"><span style="color: rgb(127, 127, 127); font-size: 12px;"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6MoypciaNOibiaxmVLk8eA6ibKL14uWjKsZwrWboQYKTfXqPicXycwL1icfia1pAG0VzlTX3MRR4FPV0ZtZA/0?wx_fmt=jpeg" data-ratio="1.0136054421768708" data-w="147" class="" style="float: none;" /></span></strong></p></section></section></section></section><p></p>
|
|
发表于 2020-10-21 12:41:27