[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fyHfgAJ1TAzInG1Ofq0V91ytfwER_D9ePbmBkHH4rMMw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":13,"related":14,"source":25,"type":60},[],"2024-06-21 10:20:49",993307809,[8,9],"对","错",{"courseImg":11,"courseName":12},"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4393d70ce9c9136f562ad7ad957d480b.png","医学影像物理学","X线具有波粒二象性",[15,27,37,47,57,61,71,81,91,101],{"answer":16,"createTime":5,"id":17,"options":18,"question":24,"source":25,"type":26},[],993307510,[19,20,21,22,23],"受摄影过程中几何条件的控制","被照体平行于胶片时变形最小","被照体接近中心线并尽量远离探测器时可减少位置变形","一般中心线应通过被检部位并垂直于探测器","变形取决于焦点、被照体和探测器三者间的位置关系","关于变形控制的叙述错误的是","v2",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":36,"source":25,"type":26},[],993307570,[31,32,33,34,35],"高压整流","直流逆变","电磁传输","滑环","高场强","螺旋CT的关键是采用了",{"answer":38,"createTime":5,"id":39,"options":40,"question":46,"source":25,"type":26},[],993307612,[41,42,43,44,45],"ROC","NPS","WS","MTF","SNR","下列可用于描述成像系统在不同空间频率条件下分辨力特性的是",{"answer":48,"createTime":5,"id":49,"options":50,"question":56,"source":25,"type":26},[],993307689,[51,52,53,54,55],"633nm","500nm","541nmn","580nm","700nm","氦氖激光片的吸收光谱峰值为",{"answer":58,"createTime":5,"id":6,"options":59,"question":13,"source":25,"type":60},[],[8,9],3,{"answer":62,"createTime":5,"id":63,"options":64,"question":70,"source":25,"type":26},[],993307947,[65,66,67,68,69],"扫场法、扫磁法","扫场法、扫频法","扫角法、扫频法","扫角法、扫时法","扫场法、扫时法","常用的MR观测方法有()、()、脉冲法",{"answer":72,"createTime":5,"id":73,"options":74,"question":80,"source":25,"type":26},[],993307977,[75,76,77,78,79],"反投影法","迭代法","滤波反投影法","傅立叶重建法","频率扫描法","下列不属于CT重建方法的是",{"answer":82,"createTime":5,"id":83,"options":84,"question":90,"source":25,"type":26},[],993307991,[85,86,87,88,89],"以任意的中心线方向和角度照射","被照体尽量靠近探测器","中心线垂直于探测器","中心线通过被检部位并垂直于探测器","使被照体平行于探测器","防止影像变形的措施不正确的是",{"answer":92,"createTime":5,"id":93,"options":94,"question":100,"source":25,"type":26},[],993308054,[95,96,97,98,99],"增感屏","平板探测器","胶片","影像板","电离室","DR的探测器是",{"answer":102,"createTime":5,"id":103,"options":104,"question":110,"source":25,"type":26},[],993308087,[105,106,107,108,109],"电离辐射","正电子湮灭","光电效应","脉冲回波原理","康普顿效应","超声成像利用了"]