Study on Standardization Workflow of MR Simulation Positioning for
Precise Radiotherapy of Brain Tumors
LI Xu, WANG Lizhen, SU Ya, YIN Yong
Department of Radiological Physics Technology, Shandong Cancer Hospital & Institute, Shandong Cancer Hospital affiliate to
Shandong University, Jinan Shandong 250117, China
Abstract:Objective To study the standardized workflow of MR simulation for precise radiotherapy of brain tumors. Methods According to
the difference between MR simulation and diagnostic MR scan, the standardized MR simulation scanning sequence was determined.
The individualized sequence was established according to the special conditions of epilepsy, mania and so on. The systematic
safety management scheme of MR simulation positioning was established from the perspective of safety. Results The standardized
scanning sequences for establishing MR simulation of brain tumors included: 1 mm T1 three-dimensional volume plain scanning
sequence, 3 mm functional MRI scanning sequence (such as DWI, ASL and DTI), 3 mm T2 weighted scanning sequence, 1 mm T1
three-dimensional volume enhanced scanning sequence, 3 mm T2 scanning flair sequence. The total scanning time for standardized
MR simulation of brain tumor was about 1461 s. After optimizing the scanning sequence for special cases (epilepsy, mania, children,
etc.), the scanning time was reduced by 55%. For children, the cooperation rate was 65% before using the standardized workflow
and 93% after using the standardized workflow, with an average increase of 28%. Conclusion The standardized workflow of MR
simulation of brain tumors can significantly improve the tolerance of patients, ensure the safety and improve the success rate of MR
simulation positioning.
李需,王俪臻,苏亚,尹勇. 脑肿瘤精确放疗MR模拟定位标准化流程的研究[J]. 中国医疗设备, 2021, 36(4): 181-185.
LI Xu, WANG Lizhen, SU Ya, YIN Yong. Study on Standardization Workflow of MR Simulation Positioning for
Precise Radiotherapy of Brain Tumors. China Medical Devices, 2021, 36(4): 181-185.