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肿瘤介入影像的术中控制

时间:2016-01-24 07:06来源:未知 作者:Mr.Editor
Control of the treatment is an important intraprocedural role of imaging. To control a treatment, the imaging system must be able to monitor the process, as just described. However, simply monitoring the process does not necessarily mean th
治疗的控制是肿瘤介入术中成像的重要角色。要控制一个治疗,成像系统必须能够监测术中的过程,然而,如刚才所描述的。简单地监测过程并不一定意味着治疗可以控制。在热消融的情况下,控制的消融可以来自给电极重新定位的能力或改进它的效果。术中控制的一个很好的例子是术中血管造影引导肝栓塞的应用,重复造影剂注射可以帮助确定- 需要进一步栓塞的残余滋养血管。



Intraprocedural control of treatment. T2-weighted fast spin-echo MR images
Sagittal image shows T2-hyperintense 3.5-cm liver metastasis (arrow) from breast cancer in 51-year-old woman  Axial image shows one of three cryoablation applicators (arrowhead) and ice ball acquired after 15 minutes of freezing Sagittal image during freezing shows untreated tumor superiorly (arrow).


Intraprocedural control of treatment. T2-weighted fast spin-echo MR images
Axial image shows placement of fourth cryoablation applicator (arrowhead) to increase spatial extent of the ice ball and treat the unfrozen part of the tumor Sagittal image shows ice ball formed by refreezing with all four applicators; entire tumor is being frozen.


肿瘤介入治疗术后,影像学定期评估其治疗的有效性,并确定并发症的存在或不利结果。然而,后续的图像的解释往往是难以区分消融引起的预期的变化,例如,与肿瘤生长相关的变化的解释可以是具有挑战性的。因此,消融后短期获得一个新的基线成像研究可能是有帮助的,以便和消融后期的成像研究进行比较。无论是治疗前计划的影像方式如何,最好是使用相同的影像方式以便在后续允许直接比较。
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