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MRI findings of absorbable hydrogel spacer for prostate cancer therapy: a pictorial review

机译:前列腺癌治疗吸收水凝胶间隔物的MRI发现:图书评论

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摘要

Prior studies have shown that dose-escalated radiation therapy for prostate cancer improves clinical outcomes. However, this is associated with increased rectal toxicity. Hydrogel spacer for prostate cancer therapy is an effective way of decreasing rectal toxicity in the late post-therapeutic stages. In some occasions, the gel spacer may not be placed symmetrically between the rectum and prostate. There are several forms of a malpositioned spacer, including lateral displacement, rectal wall infiltration, and prostate capsule infiltration. This manuscript is aimed at evaluating appropriately positioned and malpositioned gel spacers, primarily via magnetic resonance imaging. There are limited educational imaging guides that address what radiologists should evaluate on post-spacer placement imaging. This pictorial review will specifically evaluate post-injection pitfalls such as asymmetry, rectal wall infiltration, and subcapsular injection.
机译:先前的研究表明,前列腺癌的剂量升级的放射治疗可提高临床结果。 然而,这与直肠毒性增加有关。 用于前列腺癌治疗的水凝胶间隔是一种有效的方法,即在晚期治疗后阶段降低直肠毒性。 在某些情况下,凝胶间隔物可能不会在直肠和前列腺之间对称地放置。 有几种形式的呈现间隔物,包括横向位移,直肠壁浸润和前列腺囊浸润。 该稿件旨在评估适当定位和呈现的凝胶间隔物,主要通过磁共振成像。 有限的教育成像指南可以解决哪些放射科医生应在间隔后放置成像进行评估。 该图案评论将特别评估注射后缺陷,例如不对称,直肠壁浸润和亚面容喷射。

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