预先放置定位标尺在X线下行金属食管支架置入术的定位价值  

Positioning value of localizing scaleplate during the metal esophageal stenl placement under X-ray

作　　者：程鹏 郭红丽 李鸿远 曹玮[3] 

机构地区：[1]陕西省勉县九冶医院放射科,陕西汉中724207 [2]陕西省勉县九冶医院内科,陕西汉中724207 [3]第四军医大学唐都医院介入科

出　　处：《实用放射学杂志》2012年第9期1453-1455,共3页Journal of Practical Radiology

摘　　要：目的 通过透视下预先放置定位标尺或放置体表标志物,明确不同定位方法在X线下行食管支架置入术中的定位价值.方法 45例在小C型臂X线机下行食管支架植入患者（透视下放置标志物15例,预先放置标尺30例,其中栅格型标尺15例,自制数字标尺15例）,分别记录每个病例用于定位在X射线下曝光的时间,然后计算出不同定位方法的平均时间并进行比较.结果 透视下放置标志物定位,造影及多方位观察平均用时（29±0.8） s;预先放置栅格型定位标尺者,造影定位平均用时（12±0.5）s（P〈0.05）;预先放置自制数字定位标尺者,造影定位平均用时（8±0.3） s（P〈0.05）.结论 在放置金属食管支架术中,预先放置自制数字定位标尺,可以明显减少术中用于定位暴露在X线下照射的时间,减轻了辐射对人体健康的影响,可以作为基层医院定位的一种好的、实用的参考方法.Objective To observe the positioning value of different localizing scaleplates during the metal esophageal stent placemerit implantation under X-ray. Methods 45 cases （15 cases were pre-placed with metal markers, 30 cases were pre-placed with localizing scaleplates of which the grid scale in 15 cases and homemade digital scale in 15 cases ） underwent interventional treatment with esophageal metal stent under fluoroscopic at the small C-arm X rely machine. The X-ray exposure time were recorded separately for each localizing method under fluoroscopy, and the average times of different kinds of positioning methods were calculate. Results Under fluoroscopy, the mean X-ray exposure time in placing the metal markers was（29±0. 8） s by contrast and muhi-directional method;the mean X-ray exposure time in placing the grid positioning scale was （12±0.5） s（ P〈0.05 ）and the mean X-ray exposure time in placing prepositioned self-made digital positioning scale was （8±0.3） s（ P〈0.05 ）. Conclusion During the metal esophageal stent placement, pre-placing self-made digital positioning scale can significantly reduce the X-ray exposure time under fluoroscopy during the metal esophageal stent placement, and reduce the radiation effects on the human body, and can be a good, practical localizing method used in the primary hospital.

关 键 词：定位标尺 食管 金属支架 X线摄影 

分 类 号：R322.4[医药卫生—人体解剖和组织胚胎学] R815[医药卫生—基础医学]