[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fTbELa4uve_2yWhWxZNLlFtT25IuQW300cJKb3I-JDb8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":32,"type":33},[],"2024-10-18 20:48:51",162216687,[8,9,10,11,12],"图像中的伪影增加","图像密度分辨力增加","图像空间分辨力增加","图像细节可见度下降","病人接受更多的辐射",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},10,"d477dc64057823094f210c7c05e8e947","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0adeff9dd9668ec02cf89aeb8da770f7.png","医学影像成像原理","work_37897885","23级临床5-7班第12次课后作业","CT的扫描野不变,矩阵增加,结果是",[22,34,37,47,58,68,78,86,96,107],{"answer":23,"createTime":5,"id":24,"options":25,"question":31,"source":32,"type":33},[],162216686,[26,27,28,29,30],"如窗位和窗宽均调节至80,显示CT值的范围是80~160","窗位指窗宽上、下限CT值的平均数","窗技术包括窗宽、窗位的选择","窗宽指显示图像时所选用的CT值的范围","根据诊断需要调节图像的对比度和亮度的调节技术","关于窗技术,错误的叙述是","v1",0,{"answer":35,"createTime":5,"id":6,"options":36,"question":20,"source":32,"type":33},[],[8,9,10,11,12],{"answer":38,"createTime":5,"id":39,"options":40,"question":46,"source":32,"type":33},[],162216689,[41,42,43,44,45],"层厚薄病灶检出率高","层厚越厚, 密度分辨率越低","层厚越薄,空间分辨率越高","层厚的选择根据扫描部位及病变大小确定","层厚是CT扫描技术选择的重要参数","关于CT扫描层厚的理解,错误的是",{"answer":48,"createTime":49,"id":50,"options":51,"question":57,"source":32,"type":33},[],"2024-10-18 20:48:52",162216691,[52,53,54,55,56],"显示野25cm,重建矩阵320X320, 显示矩阵1024X1024","显示野12.5cm,重建矩阵320X320, 显示矩阵512X512","显示野12.5cm,重建矩阵320X320, 显示矩阵1024X1024","显示野12.5cm,重建矩阵512X512, 显示矩阵512X512","显示野25cm,重建矩阵512X512, 显示矩阵1024X1024","下列CT影像实际分辨率最高的是",{"answer":59,"createTime":49,"id":60,"options":61,"question":67,"source":32,"type":33},[],162216693,[62,63,64,65,66],"多平面重组","透明成像","表面阴影显示","容积再现","仿真内窥镜","下列不属于CT三维图像重组技术的是",{"answer":69,"createTime":49,"id":70,"options":71,"question":77,"source":32,"type":33},[],162216696,[72,73,74,75,76],"探测器","A\u002FD转换器","滤过器","准直器","D\u002FA转换器","将射线能量转换为可供记录的电信号的装置是",{"answer":79,"createTime":49,"id":80,"options":81,"question":85,"source":32,"type":33},[],162216698,[64,82,83,65,84],"最大密度投影","多层面重组","图像重建","下列不属于CT图像后处理技术的是",{"answer":87,"createTime":49,"id":88,"options":89,"question":95,"source":32,"type":33},[],162216700,[90,91,92,93,94],"空间分辨力","重建时间","扫描时间","体层厚度","扫描范围","与CT图像质量无关的是",{"answer":97,"createTime":98,"id":99,"options":100,"question":106,"source":32,"type":33},[],"2024-10-18 20:48:53",162216702,[101,102,103,104,105],"减少或不做吞咽动作","检查前训练病人呼吸","降低X线扫描剂量","儿科病人服用镇静剂","提高扫描速度","下列用于减少CT影像运动伪影的方法,错误的是",{"answer":108,"createTime":98,"id":109,"options":110,"question":116,"source":32,"type":33},[],162216704,[111,112,113,114,115],"VR—容积再现","MIP—多平面重组","CPR—曲面重组","SSD—表面阴影显示","VE—仿真内镜","下列组合错误的是"]