National Radiation Safety Committee, Health Service Executive, Ireland.
Phys Med. 2019 Sep;65:94-98. doi: 10.1016/j.ejmp.2019.08.002. Epub 2019 Aug 20.
Two requests were issued by Ireland's National Radiation Safety Committee (NRSC) to radiotherapy centres in Ireland to participate in external dosimetry audits in order to demonstrate compliance with the requirement for clinical audit in medical radiological procedures.
Centres were requested to carry out the phantom irradiation offered by the MD Anderson Dosimetry Laboratory (MDADL) for prostate IMRT in 2014 and were subsequently requested to irradiate the same organisation's head and neck phantom in 2017.
A total of 22 audits were performed across 11 radiotherapy centres, capturing the full range of planning and c-arm linear accelerator combinations in use in Ireland at the time of the audits. The mean MDADL vs. institution measured dose for Planning Target Volume (PTV) points was 0.999 ± 0.026 (1SD). The mean PTV gamma pass rate (and lower 95% confidence interval) at 7%/4 mm was 97% (90%). A significant difference was observed between prostate and head and neck irradiations but for no other subdivisions of data e.g. fixed gantry angle IMRT and VMAT.
Radiotherapy centres in Ireland participated in a co-ordinated set of external audits with all centres satisfying the phantom irradiation component of the MDADL credentialing process.
爱尔兰国家辐射安全委员会 (NRSC) 向爱尔兰的放射治疗中心发出了两项请求，要求它们参加外部剂量测定审核，以证明其符合医疗放射程序临床审核的要求。
中心被要求在 2014 年对 MD 安德森剂量测定实验室 (MDADL) 提供的前列腺调强放疗 (IMRT) 进行模体照射，并随后在 2017 年对同一组织的头颈部模体进行照射。
在 11 个放射治疗中心共进行了 22 次审核，涵盖了当时爱尔兰使用的各种计划和 C 臂直线加速器组合。MDADL 与机构测量的计划靶区 (PTV) 点剂量的平均值为 0.999±0.026(1SD)。7%/4mm 的 PTV 伽马通过率（置信区间下限为 95%）为 97%（90%）。在前列腺和头颈部照射之间观察到显著差异，但对于其他数据细分，如固定龙门角度 IMRT 和 VMAT，则没有差异。
爱尔兰的放射治疗中心参加了一组协调的外部审核，所有中心都满足了 MDADL 认证过程中模体照射的要求。
