论文部分内容阅读
将３５枚非磁性异物（金属异物８枚，非金属异物２７枚。异物大小为２ｍｍ×１．５ｍｍ×１．５ｍｍ～９ｍｍ×６ｍｍ×１ｍｍ）置入２２只兔眼球后肌锥内行ＣＴ和ＭＲＩ检查，探讨ＣＴ和ＭＲＩ对眼球后异物的诊断价值。结果：ＣＴ、ＭＲＩＴ１ＷＩ、Ｔ２ＷＩ和Ｆｌａｓｈ２ｄ序列眼球后异物检出阳性率分别为８９％（３１／３５）、９７％（３４／３５）、８６％（３０／３５）和１００％；ＣＴ上３枚干木异物密度低于球后脂肪，２８枚呈高密度而被确定，４枚塑料ＣＴ未显示；ＭＲＩＴ１ＷＩ漏检１枚青枝柳条；ＭＲＩ球后异物多呈低信号。结果提示：ＣＴ和ＭＲＩ均为检出眼球后异物的有效检查，ＳＥ序列Ｔ１ＷＩ和Ｆｌａｓｈ２ｄ序列是ＭＲＩ检出眼球后异物的优选序列
Thirty-five non-magnetic foreign bodies (8 metal foreign bodies, 27 non-metallic foreign bodies, foreign body size 2mm × 1.5mm × 1.5mm ~ 9mm × 6mm × 1mm) Check and explore the value of CT and MRI in the diagnosis of foreign body after the eye. Results: The positivity rate of foreign bodies detected by CT, MRIT1WI, T2WI and Flash2d sequences were 89% (31/35), 97% (34/35), 86% (30/35) and 100% The density of dry wood foreign body was lower than that of the ball, 28 were high density and were identified, 4 plastic CT did not show; MRIT1WI missed a blue wicker; MRI foreign body mostly showed low signal. The results suggest that both CT and MRI are effective detection of foreign body after the detection of the eyeballs. The sequence of T1WI and Flash2d of SE is the preferred sequence of foreign body after MRI