该文章观察实时MRI引导放射治疗(MRIgRT)系统中MR边缘磁场对电子枪束流特性的影响，以电磁场仿真软件模拟平行配置MRIgRT系统中1.5T MR不同边缘磁场下Varian 600C电子枪和Litton L2087电子枪的束流特性，发现平行配置的MRIgRT系统中,边缘磁场会对电子枪束流轨迹产生影响,导致大量电流损失,均方根发射度变化巨大。
", "ds_source": "本研究采用电磁场仿真分析软件探讨不同磁感应强度下电子枪中束流的特性，分析边缘磁场磁感应强度为0.0021-0.180T时的电子枪电流、束流轨迹及束流品质，发现不同几何参数的2款二极直流电子枪在不停磁场下的束流特性表现一致。
", "ds_process_way": "利用电磁场仿真分析软件进行加工
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2018-01-01 00:00:00", "ds_acq_end_time": "2018-07-12 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": 6561204, "ds_files_count": 2, "ds_format": "pdf", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "5c2ced19-5133-4f1a-8da9-e60c8a963d96.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": "2023-11-27 10:23:19", "last_updated": "2023-11-27 10:23:19", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.IMP.DB4090.2023", "i18n": { "en": { "title": "Effect of edge magnetic field on electron gun beam characteristics in real-time MRI-guided radiotherapy", "ds_format": "", "ds_source": "In this study, the electromagnetic field simulation analysis software is used to investigate the beam characteristics in the electron gun under different magnetic induction intensity. The current, beam trajectory and beam quality of the electron gun are analyzed when the magnetic induction intensity of the edge magnetic field is 0.0021-0.180t. It is found that the beam characteristics of the two types of diode DC electron guns with different geometric parameters are consistent under the non-stop magnetic field.
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "In this paper, we observed the influence of Mr edge magnetic field on the beam characteristics of electron gun in real-time MRI guided radiotherapy (mrigrt) system. The beam characteristics of Varian 600C electron gun and Litton l2087 electron gun under different edge magnetic fields of 1.5T MR in parallel configuration mrigrt system were simulated by electromagnetic field simulation software, It leads to a large amount of current loss, and the root mean square emittance changes greatly.
", "ds_time_res": "", "ds_acq_place": "Lanzhou, Gansu", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Using electromagnetic field simulation analysis software for machining
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "电子枪", "边缘磁场", "平行配置", "放射疗法", "磁共振成像" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "安徽", "合肥" ], "ds_time_tags": [ 2018 ], "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" }