该文章采用相位编码方向分段的多次激发EPI序列和基于MUSE的无导航脉冲重建算法，使用多路敏感性编码对图像进行处理优化处理，减少扩散加权图像的几何畸变，提高弥散功能成像的图像质量和几何精度，有助于提高治疗效果和精准度。
", "ds_source": "单次激发（SS）回波平面成像（EPI）是临床上常用的弥散加权成像（DWI）方法。单次激发扩散加权EPI（SS-DWEPI）极限的几何畸变在精密放射治疗中的应用。我们的目的是调查使用多路敏感编码DWEPI（MUSE-DWEPI）减少几何畸变，使其能用于脑放射治疗。在体模研究中，比较MUSE-DWEPI和SS-DWEPI测量的体模直径，计算几何畸变率（%GD）。分析了控制点的位移矢量，还绘制和计算了。在一项患者研究中，10名患者（6名术后胶质瘤患者，4名脑肿瘤患者）需要进行MRI检查，并对SS-DWEPI和MUSE-DWEPI中的图像失真水平进行了评估以T2周期性旋转重叠平行线增强重建（T2-PROP ELLER）图像为参照进行比较。基于t2pro PELLER、SS-DWEPI和MUSE-DWEPI，利用Dice相似系数（DSC）和Hausdorff距离，描绘肿瘤靶区和四个脑区（HD）量化几何变形水平。
", "ds_process_way": "在体模研究中，比较MUSE-DWEPI和SS-DWEPI测量的体模直径，计算几何畸变率（%GD）。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2017-07-01 00:00:00", "ds_acq_end_time": "2019-12-31 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": 1735761, "ds_files_count": 2, "ds_format": "pdf", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "1f298b49-dac5-479f-ab92-d42d3915571a.png", "ds_thumb_from": 0, "ds_ref_way": "肖国青，使用多路敏感性编码减少扩散加权图像几何畸变的可行性研究，国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn/)，2021，doi：10.12072/ncdc.IMP.db2496.2022", "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": "2022-08-26 17:38:28", "last_updated": "2022-12-03 02:10:08", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.IMP.db2496.2022", "i18n": { "en": { "title": "A feasible study on using multiplexed sensitivity-encoding to reduce geometric distortion in diffusion-weighted echo planar imaging", "ds_format": "", "ds_source": " Single shot echo planar imaging (EPI) is a commonly used diffusion weighted imaging (DWI) method in clinic. Geometric distortion of the limit of single shot diffusion weighted EPI (ss-dwepi)\nObjective: To explore the application of X-ray in precision radiotherapy. Our aim is to investigate the use of multiplex sensitive coding dwepi\nMuse-dwepi can be used in brain radiotherapy to reduce geometric distortion. In the phantom study, the phantom diameter meters measured by muse-dwepi and ss-dwepi were compared to calculate the geometric distortion rate (GD). The displacement vector of control point is analyzed, and the displacement vector is drawn and calculated. In a patient study, 10 patients (6 patients with postoperative gliomas and 4 patients with brain tumors) required MRI examination, and the image distortion levels in ss-dwepi and muse-dwepi were evaluated, using t2-prop Eller) images were compared. Based on t2pro Peller, ss-dwepi and muse-dwepi were used to depict the tumor target area and four brain regions (hd) by using dice similarity coefficient (DSC) and Hausdorff distance.
", "ds_quality": " Good data quality\n In this paper, phase coded directional segmented multiple excitation EPI sequence and muse based non navigation pulse reconstruction algorithm are used to optimize the image processing, reduce the geometric distortion of diffusion weighted image, improve the image quality and geometric accuracy of diffusion functional imaging, and help to improve the treatment effect and accuracy.\n\nIn phantom study, the phantom diameters measured by muse-dwepi and ss-dwepi were compared, and the geometric distortion rate (GD) was calculated.
", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/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, "belong_to_nieer": false, "ds_topic_tags": [ "多路敏感性编码", "回波平面成像", "几何畸变" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "兰州", "甘肃省" ], "ds_time_tags": [ 2017, 2018, 2019 ], "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": "申国盛", "email": "sgs2005@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" }