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首页> 外文期刊>Acta oncologica. >Magnetic resonance-only simulation and dose calculation in external beam radiation therapy: a feasibility study for pelvic cancers
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Magnetic resonance-only simulation and dose calculation in external beam radiation therapy: a feasibility study for pelvic cancers

机译：仅磁共振仿真和外部光束放射治疗的剂量计算：骨盆癌的可行性研究

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摘要

Background: The clinical feasibility of using pseudo-computed tomography (pCT) images derived from magnetic resonance (MR) images for external bean radiation therapy (EBRT) planning for prostate cancer patients has been well demonstrated. This paper investigates the feasibility of applying an MR-derived, pCT planning approach to additional types of cancer in the pelvis. Material and methods: Fifteen patients (five prostate cancer patients, five rectal cancer patients, and five gynecological cancer patients) receiving EBRT at Turku University Hospital (Turku, Finland) were included in the study. Images from an MRCAT (Magnetic Resonance for Calculating ATtenuation, Philips, Vantaa, Finland) pCT method were generated as a part of a clinical MR-simulation procedure. Dose calculation accuracy was assessed by comparing the pCT-based calculation with a CT-based calculation. In addition, the degree of geometric accuracy was studied.
机译：背景：使用伪计算断层摄影（PCT）图像的临床可行性来自磁共振（MR）图像进行外部豆类放射治疗（EBRT）规划前列腺癌患者的计划。 本文调查了应用MR-SERSIVED，PCT计划方法在骨盆中额外类型癌症的可行性。 研究中，十五名患者（五个前列腺癌患者，五个直肠癌患者，五名直肠癌患者和五名妇科癌症患者）在该研究中被纳入Turku大学医院EBRT eBRT。 从MRCAT（计算衰减，飞利浦，VantaA，芬兰）PCT方法的图像作为临床MR仿真程序的一部分产生了来自MRCAT的图像。 通过比较基于CT基计算的基于PCT的计算来评估剂量计算精度。 此外，研究了几何精度的程度。

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