Development and Preliminary Application of a New Axial Loading MRI Device for Lumbar Spine
FANG Xingyua, LI Jialinb, JI Junc, LIU Mingxiaa, TANG Zhiquana
a. Department of Radiology; b. Department of Laboratory; c. Department of Medical Engineering, The 305th Hospital of Chinese
PLA, Beijing 100017, China
Abstract：Objective To develop a new type of axial loading device for lumbar MRI examination, which is used for the diagnosis
of lumbar disc herniation (LDH). Methods The new type of axial loading MRI device for lumbar spine includes two parts: load
wearable device and pressure device. Load wearing devices mainly include shoulder support belts, hip support belts, connecting
belts and various adjustment buckles; pressure devices include air cylinders, snorkels and control systems. Through preliminary
application, the differences of comfort score, examination time and imaging data between psoas-relaxed position and axial load
position were compared. Results A total of 30 volunteers successfully completed the inspection with the new load device. There was
no statistically significance (P>0.05) in comfort score and examination time between the two postures. Differences of the sagittal
diameter of the spinal canal and the dural sac cross-sectional area in L4~5 were statistically significant (P<0.05). Conclusion The
device is reasonable in design and convenient to use. It can effectively implement lumbar spine loads, simulate the pathological
conditions of the lumbar spine in the real state, and is expected to improve the diagnostic accuracy of LDH.
房星宇a，李佳林b，姬军c，刘明霞a，唐志全a. 新型腰椎轴向负荷MRI装置的研制及初步应用[J]. 中国医疗设备, 2022, 37(3): 38-42.
FANG Xingyua, LI Jialinb, JI Junc, LIU Mingxiaa, TANG Zhiquana. Development and Preliminary Application of a New Axial Loading MRI Device for Lumbar Spine. China Medical Devices, 2022, 37(3): 38-42.
