Abstract：
OBJECTIVE: Based on magnetic resonance imaging technology, the dangerous depth of straight needling and the safety of deep needling at Dachangshu (BL 25) are discussed, and data support is provided for standardizing deep needling at Dachangshu (BL 25).
METHODS: The horizontal cross-sectional images of 148 healthy adult subjects under the spinous process of the 4th lumbar vertebra were collected by magnetic resonance instrument, the anatomical structure was analyzed, and the dangerous depth of straight needling at Dachangshu (BL 25) was measured.
RESULTS: The dangerous depth of straight needling at Dachangshu (BL 25) was (11.2±1.3) cm and (11.0±1.2) cm on the left and right sides of males, and (9.8±1.3) cm and (9.7±1.3) cm on the left and right sides of females. There was a positive correlation between the dangerous depth of straight needling at Dachangshu (BL 25) and body mass index (BMI). In the case of similar body size, the dangerous depth of straight needling at Dachangshu(BL 25) in males was greater than that in females (P<0.01).
CONCLUSIONS: At present, the deep needling at Dachangshu (BL 25) used in clinic is safe. In clinical application of the deep needling at Dachangshu (BL 25), the depth of needle insertion can be determined according to body size and gender.
目的：基于磁共振成像技术探讨大肠俞直刺危险深度和深刺法的安全性，为规范大肠俞深刺法提供数据支持。方法：应用磁共振仪采集148例健康成年受试者第4腰椎棘突下的水平断面图像，分析解剖结构，测量大肠俞直刺时的危险深度。结果：大肠俞直刺危险深度：男性左右两侧分别为（11.2±1.3）cm、（11.0±1.2）cm，女性左右两侧分别为（9.8±1.3）cm、（9.7±1.3）cm。大肠俞直刺危险深度与体质量指数（BMI）呈正相关，在体型相近情况下，男性受试者大肠俞直刺危险深度大于女性受试者（P<0.01）。结论：目前临床所用的大肠俞深刺法是安全的。临床上应用大肠俞深刺法时，可根据体型及性别确定进针深度。.
METHODS: The horizontal cross-sectional images of 148 healthy adult subjects under the spinous process of the 4th lumbar vertebra were collected by magnetic resonance instrument, the anatomical structure was analyzed, and the dangerous depth of straight needling at Dachangshu (BL 25) was measured.
RESULTS: The dangerous depth of straight needling at Dachangshu (BL 25) was (11.2±1.3) cm and (11.0±1.2) cm on the left and right sides of males, and (9.8±1.3) cm and (9.7±1.3) cm on the left and right sides of females. There was a positive correlation between the dangerous depth of straight needling at Dachangshu (BL 25) and body mass index (BMI). In the case of similar body size, the dangerous depth of straight needling at Dachangshu(BL 25) in males was greater than that in females (P<0.01).
CONCLUSIONS: At present, the deep needling at Dachangshu (BL 25) used in clinic is safe. In clinical application of the deep needling at Dachangshu (BL 25), the depth of needle insertion can be determined according to body size and gender.
目的：基于磁共振成像技术探讨大肠俞直刺危险深度和深刺法的安全性，为规范大肠俞深刺法提供数据支持。方法：应用磁共振仪采集148例健康成年受试者第4腰椎棘突下的水平断面图像，分析解剖结构，测量大肠俞直刺时的危险深度。结果：大肠俞直刺危险深度：男性左右两侧分别为（11.2±1.3）cm、（11.0±1.2）cm，女性左右两侧分别为（9.8±1.3）cm、（9.7±1.3）cm。大肠俞直刺危险深度与体质量指数（BMI）呈正相关，在体型相近情况下，男性受试者大肠俞直刺危险深度大于女性受试者（P<0.01）。结论：目前临床所用的大肠俞深刺法是安全的。临床上应用大肠俞深刺法时，可根据体型及性别确定进针深度。.
摘要：
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