[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwCfJF1WmUSS546EVaxEtgNFJ--Ei7ejdlg-v7g1t0uQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":33,"type":34},[],"2024-12-24 21:05:19",173722707,[8,9,10,11,12],"中枢神经系统","骨骼及软组织","心脏及血管","消化系统","以上均可",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},65,"3c7f834ee44b4a95d6bc3db9e36cb9bb","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4b9c25bceb2f913dac3b7f7d3a0a87e2.png","医学影像检查技术学","df842c68648b4b038accd03ee3beb007","MRI复习题","MRI检查适用于( )",[22,35,38,48,58,68,78,88,98,108],{"answer":23,"createTime":24,"id":25,"options":26,"question":32,"source":33,"type":34},[],"2024-12-24 21:05:18",173722706,[27,28,29,30,31],"组织信号强度差值","图像的信号强度与背景随机噪声强度之比","背景噪声的标准差之比","信噪比常用CNR",",两种组织信号强度的相对差别","有关MR信噪比的叙述,正确的是","v1",0,{"answer":36,"createTime":5,"id":6,"options":37,"question":20,"source":33,"type":34},[],[8,9,10,11,12],{"answer":39,"createTime":5,"id":40,"options":41,"question":47,"source":33,"type":34},[],173722708,[42,43,44,45,46],"体内装有心脏起搏器者(除外新型的MRI求容性产品)","体内植入电子耳蜗等电子装置者","妊娠三个月内的受孕初期者","眼眶内铁磁性金属异物","以上均不宜","下列哪些情况,一般不宜行MRI!检查( )",{"answer":49,"createTime":5,"id":50,"options":51,"question":57,"source":33,"type":34},[],173722709,[52,53,54,55,56],"矩形","圆形","椭圆形","正方形","多边形","核磁扫描设置FOV时,根据人体结构,一般设为( )",{"answer":59,"createTime":5,"id":60,"options":61,"question":67,"source":33,"type":34},[],173722710,[62,63,64,65,66],"又称流动性增强效应MRA","又称为背景组织饱和效应MRA","可分为2D和3D两种采集模式","3D TOF-MRA分辨率明显低于2D TOF-MRA","2D TOF-MRA对整个扫描区域进行连续多层单层面采集","关于TOF-MRA的叙述,错误的是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":77,"source":33,"type":34},[],173722711,[72,73,74,75,76],"超声检查","ECT检查","X线平片检查","CT检查","MRI检查","考虑早期股骨头坏死时,,首选的影像学检查是( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":87,"source":33,"type":34},[],173722712,[82,83,84,85,86],"体线圈","专用相控阵线圈","正交线圈","匀场线圈","梯度线圈","乳腺MRI扫描般使用的线圈为( )",{"answer":89,"createTime":5,"id":90,"options":91,"question":97,"source":33,"type":34},[],173722713,[92,93,94,95,96],"T2弛豫","自旋—自旋弛豫","自旋—晶格弛豫","氢质子顺磁场方向排列","氢质子逆磁场方向排列","纵向弛豫又叫",{"answer":99,"createTime":5,"id":100,"options":101,"question":107,"source":33,"type":34},[],173722714,[102,103,104,105,106],"氦原子","碳原子","氧原子","氢原子","钙原子","人体含量最多的原子",{"answer":109,"createTime":5,"id":110,"options":111,"question":117,"source":33,"type":34},[],173722715,[112,113,114,115,116],"主磁场","自旋核体系","梯度磁场","射频磁场","射频脉冲","磁共振现象产生条件不包括"]