肝血管瘤的CT影像诊断
- 格式:ppt
- 大小:3.16 MB
- 文档页数:21
CT和B超诊断肝血管瘤的影像学征象分析发表时间:2015-09-10T13:40:24.257Z 来源:《健康世界》2015年1期作者:董少军李炳淑[导读] 山东省寿光市人民医院 262700 探讨、分析肝血管瘤的多层螺旋CT和B超影像学表现.山东省寿光市人民医院 262700摘要:目的探讨、分析肝血管瘤的多层螺旋CT和B超影像学表现;方法选择、收集我院经CT和B超检查诊断为肝血管瘤的患者96例,并对两种检查影像学征象进行对比分析;结果肝血管瘤CT平扫为境界清楚,密度均匀的圆形或卵圆形低密度影,部分较大病灶中央可见星形或不规则更低密度区;增强扫描动脉期边缘结节样或中心强化,强化区进行性向中央扩展,延迟扫描病灶呈等密度填充,较大病灶中央可见始终不填充区同平扫;B超检查:病灶直径<3.0cm的肝血管瘤,声像图表现为均匀强回声,边界清晰、锐利,呈浮雕样,周边无声晕,后方无声影;病灶>3.0cm的肝血管瘤,多数呈强回声,表现为形态不规整、边界清晰、无声影及声晕;少数呈低回声;结论应用多层螺旋CT诊断肝血管瘤可发现动脉期的典型征象并不受呼吸影响,且不遗漏病灶,诊断准确率很高,是最佳、最有效、可确诊的方法;而肝血管瘤行B超检查,则具有无伤、无痛、价廉、快速等优点,并且正确率极高,应为诊断肝血管瘤的首选检查方法。
关键词:肝血管瘤;CT扫描;B超检查;影像学征象【Summary】purpose study,analyze super image of many spiral CTs and B of liver afferent lump to learn performance;Method choice,collect my hospital through the CT and the B the super check diagnosis be 96 for the sufferer of liver afferent lump,and learn to advertise for elephant to carry on contrast to two kinds of check images analysis;Result liver the afferent lump CT Be even to sweep to know for state,density even circular or egg circular the low density copy,the part bigger focus the center it is thus clear that star polygon or irregular and much lower density area;Strengthen to scan artery to expect the edge knot stanza kind or center to enhance,enhance area to carry on aptitude the center to expand,delay to scan a focus to present to wait density to fill,bigger focus the center it is thus clear that always don't fill area together even sweep;B super check:Focus diameter<the liver of the 3.0 cms afferent lump,voice the being like chart copy for even strong echo,boundary being clear,sharp-edged,presenting ectype kind,periphery having no voice dizzy,rear having no voice now;Focus>the liver of the 3.0 cms afferent lump,majority present strong echo,the performance is an appearance the rules isn't whole,clear boundary,have no voice the shadow and voice is dizzy;The minority present to loiter a voice;The conclusion applies many spiral CT diagnosis liver the afferent lump can discover that the typical model that the artery expects advertises for elephant and be free from breath influence,and don't leave out a focus,diagnose accuracy very high,is the best,most effective,the method for canning confirm;But liver the afferent lump go a B super check and then haven't hurt,have no pain,low price,rapid etc.advantage,and the correctness is the highest,should for diagnose the head of liver afferent lump to choose check method.【Keyword】liver the afferent lump CT scanThe B super check image learns to advertise for elephant1、资料和方法选择、收集我院2010年01月—2012年01月均经多层螺旋CT和B超检查诊为肝脏血管瘤的患者96例,其中男62例,女34例;年龄最大者75岁,最小者30岁;无临床症状者88例,具有腹部饱胀、不适者8例。
肝血管瘤45例CT诊断目的:探讨肝血管瘤的CT征象及诊断价值。
方法:45例患者行CT平扫加增强扫描,对其影像进行观察分析。
结果:所有病灶平扫表现为低密度,增强扫描表现为早期强化,随时间进展呈向心性强化,部分直至完全充填,然后强化逐步减退,表现为快进慢出,即“早出晚归”特征。
结论:CT平扫及增强扫描对诊断肝血管瘤意义极大,是诊断肝血管瘤的一种有效方法。
标签:肝血管瘤;增强扫描;CT诊断肝血管瘤是肝脏最常见的良性肿瘤。
尸检发现率为7.3%[1],女性居多,一般多无临床症状,常在腹部影像学检查中偶然发现。
随着多层螺旋CT多期动态增强扫描技术在肝脏中的应用,肝血管瘤的正确检出率明显提高,其重要性在于与恶性肿瘤的鉴别。
现将我院2005年6月~2009年6月行螺旋CT平扫加三期增强扫描诊断,临床最后确诊为肝血管瘤的45例患者的CT资料进行回顾性分析,并总结报道如下:1 资料与方法1.1 一般资料本组45例中,女性37例,男性8例;年龄22~65岁,平均39岁。
全部病例无肝硬化病史,甲胎蛋白定性、定量均为阴性,31例行B超检查,其中,23例B超诊断为肝血管瘤,8例B超未能确诊,诊断为肝内占位病变;14例因右上腹不适直接行CT 检查。
1.2 方法检查前,患者空腹喝水800~1 200 ml,以充盈胃肠道,使用Siemens SOMATOM欢悦6多层螺旋CT扫描机,先平扫后增强扫描。
采用仰卧位,扫描范围上至膈肌,下至肝脏最下缘,全部显示至满意为止。
层厚6 mm,层距6 mm,用高压注射器经肘静脉注射碘海醇100 ml行增强扫描,流速2.5 ml/s,在降主动脉段进行预监测,当降主动脉内造影剂达到一定浓度时自动进入动脉期扫描,时间为注射碘海醇后10~20 s,后在45~60 s进行门静脉扫描,延迟期为2~10 min,对小病灶进行薄层重建。
2 结果2.1 平扫表现累计发现53个病灶,病灶分布为肝右叶32个,肝左叶18个,肝尾叶3个。