[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fYOn7hjJcbUrbX9-8qHL75deWKNggd9RvyLyueR2kw1c":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":33,"type":34},[],"2025-05-29 12:57:41",191919735,[8,9,10,11,12],"步进扫描","螺旋扫描","间隔扫描","持续扫描","高速扫描",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},51,"2be0de86a8cafd066e4d79c95f66aa67","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","医学影像成像理论2023本科","work_43628196","CT成像","CT扫描时,球管连续旋转曝光,检查床不停顿单向移动并采集数据的方式是",[22,35,46,55,65,68,75,86,96,106],{"answer":23,"createTime":24,"id":25,"options":26,"question":32,"source":33,"type":34},[],"2025-05-29 12:57:39",191919707,[27,28,29,30,31],"CT图像是数字图像","CT成像仍使用X射线","CT是多参数成像","CT扫描层是二维体积","CT可以进行薄层扫描","下列CT叙述中,错误的是","v1",0,{"answer":36,"createTime":37,"id":38,"options":39,"question":45,"source":33,"type":34},[],"2025-05-29 12:57:40",191919713,[40,41,42,43,44],"质量","密度","线性衰减系数","体积","每千克电子数","CT成像过程中需要测量体素的",{"answer":47,"createTime":37,"id":48,"options":49,"question":54,"source":33,"type":34},[],191919725,[50,51,42,52,53],"入射X线强度","出射X线强度","X线穿过物体的厚度","X线穿过物体的时间","在LambertBeer吸收定律中I=I0e-μd,其中I0为",{"answer":56,"createTime":37,"id":57,"options":58,"question":64,"source":33,"type":34},[],191919730,[59,60,61,62,63],"反投影法","迭代法","滤波反投影法","傅立叶重建法","扫场法","不属于CT重建方法的有",{"answer":66,"createTime":5,"id":6,"options":67,"question":20,"source":33,"type":34},[],[8,9,10,11,12],{"answer":69,"createTime":70,"id":71,"options":72,"question":74,"source":33,"type":34},[],"2025-05-29 12:57:42",191919749,[73,9,10,11,12],"常规扫描","CT扫描时,球管旋转数秒后停止,检查床移到下一个扫描层面,重复进行下一次扫描的扫描方式是",{"answer":76,"createTime":77,"id":78,"options":79,"question":85,"source":33,"type":34},[],"2025-05-29 12:57:43",191919756,[80,81,82,83,84],"球管数目多","计算机多","探测器排数多","准直器多","滤线栅多","多层螺旋CT与单层螺旋CT的主要区别是",{"answer":87,"createTime":77,"id":88,"options":89,"question":95,"source":33,"type":34},[],191919764,[90,91,92,93,94],"高CT值部分被转换为黑色","高CT值部分被转换为白色","X射线衰减越大,转换成灰阶后颜色越深","图像中X射线未被衰减,它将显示为白色图像","改变窗宽,也可改变被显示物体的CT值","关于灰阶与CT值关系的叙述,正确的是",{"answer":97,"createTime":77,"id":98,"options":99,"question":105,"source":33,"type":34},[],191919767,[100,101,102,103,104],"多方位成像特性","横断面图像显示特性","X线的吸收衰减特性","数据采集系统(DAS)特性","X线透过被照体之后的直进性","CT成像原理利用的是",{"answer":107,"createTime":108,"id":109,"options":110,"question":116,"source":33,"type":34},[],"2025-05-29 12:57:44",191919768,[111,112,113,114,115],"KW","HU","W","L","CM","CT值的单位是"]