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1)  Random setup error
随机摆位误差
2)  setup error
摆位误差
1.
An analysis of setup error with on board imager for chest tumors treated with intensity modulated radiation therapy
应用OBI系统分析胸部肿瘤调强放疗的摆位误差
2.
Objective: To measure the setup error undergoing the radiation therapy for head-neck neoplasms,and to analyze the effect of the setup error on the physics dose of targets and peripheral organs at risk(OAR)for nasopharyngeal carcinoma(NPC)undergoing the intensity modulated radiation therapy (IMRT).
目的:测量头颈部肿瘤在放射治疗中的摆位误差,分析鼻咽癌(NPC)调强放射治疗(IMRT)中误差对靶区和危及器官物理剂量学的影响。
3.
AIM: To measure the setup error in the intensity modulated radiation therapy (IMRT) for head-neck neoplasms, and to analyze the margin between the clinical target volume (CTV) and planning target volume (PTV).
结果:在左右、头脚、腹背方向的摆位误差分别是(-0。
3)  Set-up errors
摆位误差
1.
Objective: To examine and analyze the set-up errors for patients with three dimensional conformal and Intensity Modulated Radiotherapy to calculate CTV referential safety margins of PTV.
目的:测定和分析三维适形及调强放疗的摆位误差,并依此计算CTV外扩PTV边界的大小。
2.
Conclusion:So this registration method can be applied for online estimation for set-up errors in clinical radiation.
目的:及时纠正放射治疗过程中患者的摆位误差,提高放射治疗效果。
4)  set-up error
摆位误差
1.
Feasibility study to apply EPID by trained therpistss in evaluation of set-up errors of pelvic irradiation;
技术员独立应用EPID对盆腔摆位误差监测的可行性
2.
Objective: To determine the magnitude of the set-up errors in precise radiotherapy for body tumors.
目的:确定体部肿瘤精确放疗时的摆位误差。
3.
[Purpose] To investigate the set-up error in intensity modulated radiotherapy (IMRT) with electric portal image device (EPID) in nasopharyngeal carcinoma (NPC).
[目的]用电子射野图像器件(EPID)拍摄的射野片研究调强放疗治疗鼻咽癌过程中的摆位误差。
5)  Random phase error
随机相位误差
1.
Random phase error in the radar data will badly influence the pulse compress effect and blur the image, due to the difficulty of removing this multiplicative phase noise.
从雷达成像的原理出发,分析了方位向随机相位误差对点目标成像的影响,提出了通过对线性调频信号模糊图进行旋转,矩阵奇异值分解来减弱随机相位噪声影响的方法。
6)  random errors
随机误差
1.
Effect of random errors of planar near-field measurements with ultra-low sidelobe antennas on antenna far-field pattern;
超低旁瓣天线平面近场测量中随机误差对远场方向图的影响
2.
Effects of random errors on the sidelobe level of a module array antenna;
随机误差对模块化阵列天线副瓣的影响
3.
A calculation of random errors in basic physical experiment;
普物实验中随机误差的计算
补充资料:随机误差
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性质:又称为偶然误差(accidental error)。由于测试过程中诸多因素随机作用而形成的具有抵偿性的误差。它是不可避免的,可以设法将其减少,但又不能完全消除。随机误差具有统计性,在多次重复测量中,绝对值相同的正、负误差出现的机会大致相同,大误差出现的机会比小误差出现的机会少。由于随机误差中正、负误差相互抵偿的特性,多次测量平均值的随机误差要比单次测量值的随机误差小,多次测量的随机误差的平均值趋向于零,因此不影响测量的准确度。随机误差使测量值产生波动,影响测量结果的精密度。

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