作者描述CT泪囊摄影技术,该造影是因经内窥镜泪囊鼻吻合术术前的影象学需要而发展起来的。患者在CT扫描床上取仰卧位,用2滴0.4％丁氧卡因局部麻醉剂滴入眼内,当药物生效时,行穿刺扩张后将2FG导管插入下泪小管内,将导管固定在皮肤上,注入稀碘化油,大约3s以上或见造影剂自上泪点溢出,让患者头部后伸放在支架里取冠状扫描的位置。导管保持原位,平扫选层。倾斜扫描 The authors describe CT lacrimal sac imaging, which was developed as a preoperative imaging aid for endoscopic dacryocystorhinostomy. Patients in the CT scan bed supine position, with 2 drops of 0.4% butoxycaine local anesthetic drip into the eye, when the drug is effective, the line puncture after expansion 2FG catheter into the lacrimal duct, the catheter fixed on the skin, Inject dilute iodized oil, about 3s or more see the contrast agent overflow from the punctum, so that the patient’s head after the extension of the stent in the coronal scan position. Catheter in place, flat layer selection. Tilt the scan