Patients with localized prostate cancer comprise a large volume of treatments in radiation therapy centers. Occasionally, individual patient anatomy makes the safe delivery of an effective dose of radiation therapy challenging. We describe 2 cases of patients with a small bowel deep in the pelvis within the planning target volume with subsequent suboptimal radiation therapy treatment plans. We explore how we used the GU-Lok, a prostate immobilization device, to move the small bowel away from the prostate, and tighten target volume margins to help facilitate safe and effective treatment.

中文翻译：

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使用 GU-Lok 将不利的小肠解剖结构从前列腺移开以优化放射治疗计划

局部前列腺癌患者在放射治疗中心接受大量治疗。有时，个别患者的解剖结构使安全提供有效剂量的放射治疗具有挑战性。我们描述了 2 例在计划目标体积内骨盆深处有小肠的患者，以及随后的次优放射治疗计划。我们探索了如何使用 GU-Lok（一种前列腺固定装置）将小肠从前列腺移开，并收紧目标体积边缘以帮助促进安全有效的治疗。