该文章介绍了一款新开发的具有自主知识产权基于GPU的蒙特卡洛程序ARCHER，该程序能快速计算在磁场情况下外照射治疗剂量。结果表明，垂直于束流的磁场对剂量分布有一定的影响。在乳腺癌病例中，由于电子返回效应，在B=1.5T的身体和空气界面处的剂量比无磁参与时增加。但对于前列腺病例，PTV区域的剂量仅略有下降，这是因为前列腺的组织密度差较小。对于质子的情况，在垂直磁场中，质子发生了明显的偏转，而在直列磁场中偏转可以忽略。与CPU多线程代码TOPAS相比，ARCHER大大提高了剂量计算的速度。很明显，MR引导的光子和质子治疗技术应该考虑使用快速蒙特卡罗剂量引擎进行MRIgRT计划的剂量学变化。
", "ds_source": "乳腺癌病例及前列腺病例临床数据
", "ds_process_way": "基于GPU的蒙特卡洛程序ARCHER
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2020-06-30 00:00:00", "ds_acq_end_time": "2020-06-30 00:00:00", "ds_acq_place": "甘肃兰州", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 1102636, "ds_files_count": 2, "ds_format": "pdf", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "43f0fc5b-76c2-4c6c-afaf-dc74f80d2fd6.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "9971252d-7beb-4464-bc08-bdcc5a1d7dd1", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [], "quality_level": 3, "publish_time": "2023-10-17 18:58:39", "last_updated": "2024-01-03 17:22:19", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.IMP.DB4028.2023", "license": null, "i18n": { "en": { "title": "The dosimetric impact of magnetic field on external-beam therapy using GPU-based Monte Carlo code ARCHER", "ds_format": "", "ds_source": "Clinical data of breast cancer cases and prostate cases
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "This paper introduces a newly developed GPU based Monte Carlo program archer with independent intellectual property rights, which can quickly calculate the external radiation dose in magnetic field. The results show that the magnetic field perpendicular to the beam has a certain effect on the dose distribution. In breast cancer cases, due to the electron return effect, the dose at B=1.5T's body and air interface increased when compared with non magnetic participation. However, for prostate cases, the dose of PTV area only decreased slightly, because the tissue density difference of prostate was small. In the case of protons, the deflection of protons is obvious in the vertical magnetic field, but it can be ignored in the in-line magnetic field. Compared with Topas, Archer greatly improves the speed of dose calculation. It is clear that Mr guided photon and proton therapy should consider the dosimetric changes of mrigrt plan using fast Monte Carlo dose engine.
", "ds_time_res": "", "ds_acq_place": "Lanzhou, Gansu", "ds_space_res": "", "ds_projection": "", "ds_process_way": "GPU based Monte Carlo program Archer
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "GPU", "MC", "磁场", "剂量" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "兰州", "甘肃省" ], "ds_time_tags": [ 2020 ], "ds_contributors": [ { "true_name": "肖国青", "email": "xiaogq@impcas.ac.cn", "work_for": "中国科学院近代物理研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "肖国青", "email": "xiaogq@impcas.ac.cn", "work_for": "中国科学院近代物理研究所", "country": "中国" } ], "ds_managers": [ { "true_name": "肖国青", "email": "xiaogq@impcas.ac.cn", "work_for": "中国科学院近代物理研究所", "country": "中国" } ], "category": "其他" }