Quintero Castelán María Del Sol, Hernández Christian Estrada, Chávez Pablo Abel Chee, Rojas-López José Alejandro
Radiofísica Especializada, S de RL de CV, Monterrey, Nuevo León, Mexico.
Hospital Almater, Av. Madero 1060, Segunda Sección, C.P. 21100, Mexicali B.C., Mexico.
Biomed Phys Eng Express. 2023 Oct 31;9(6). doi: 10.1088/2057-1976/ad04e9.
To show the considerations followed for MR-linac in shielding design for the first MR-linac in Mexico following the national clinical necessities.The National Council on Radiation Protection and Measurements (NCRP) 151 recommendations were followed for the shielding design for primary and secondary barriers and the door design. The calculations were made considering the clinical demands in the country, that is, intensity modulated (IMRT) and 3D conformal radiotherapy (3DC-RT) in 80%-20% proportion.The values obtained in the level survey fully comply with the limits established by the national regulatory authority and with those recommended by the International Commission on Radiological Protection (ICRP) for public and occupational exposures.It is remarkable that the workload may increase or that the doses per patient may increase considering occupancy factors, which would allow the introduction of hypofractionated techniques with the same number of patients considered in this work without the need to make modifications in the bunker design.
为展示遵循墨西哥国家临床需求为该国首台磁共振直线加速器进行屏蔽设计时所考虑的因素。在初级和次级防护屏蔽以及门的设计中遵循了美国国家辐射防护与测量委员会（NCRP）第151号建议。计算时考虑了该国的临床需求，即强度调制放射治疗（IMRT）和三维适形放射治疗（3DC-RT）的比例为80%-20%。在水平测量中获得的值完全符合国家监管机构规定的限值以及国际放射防护委员会（ICRP）针对公众和职业照射所推荐的限值。值得注意的是，考虑占用因子，工作量可能会增加，或者每位患者的剂量可能会增加，这将允许在考虑与本研究相同数量患者的情况下引入大分割技术，而无需对屏蔽室设计进行修改。
