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乳腺癌保乳术后放疗X线模拟机与CT模拟定位的临床应用 被引量:1

Clinical application of X-ray simulator and CT simulation positioning in radiotherapy after breast conserving surgery for breast cancer
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摘要 目的探讨乳腺癌保乳术后放疗CT模拟定位的应用价值。方法选取110例乳腺癌保乳术后患者,行X线模拟机定位与螺旋CT模拟定位,观察两种定位方式下所有患者验证误差情况以及图像情况。结果CT定位所需时间、扫描平均时间均短于X线模拟机,且等中心平均误差小于X线,差异有统计学意义(P<0.05),CT空气密度分辨率更高,且体位稳定性更好,床位移动误差与验证片误差更小。16排螺旋CT定位机在定位后扫描期间体位更加舒适,患者耐受,体位固定更加牢固具有良好的重复性,图像时间、空间和密度分辨率较高,定位与治疗期间体位能够长时间保持,能够防止由于身体受限造成的体位位移。传统X线模拟定位机能够减少移动床期间出现的误差。CT定位后不同方向误差情况均小于X线定位,差异有统计学意义(P<0.05)。结论乳腺癌保乳术根治性放疗期间,通过16排螺旋CT下实施模拟定位,能够使得放疗定位更加精准,验证误差较小。
作者 许科 王森 刘昀 陈文占 XU Ke;WANG Sen;LIU Yun
出处 《医学影像学杂志》 2023年第7期1285-1287,共3页 Journal of Medical Imaging
基金 河南省医学科技攻关计划项目(编号:LHGJ20200933)。
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