Objective To discuss the optimalselection of the puncture path in performing CT-guided pericardial drainage,and to evaluate its clinical feasibility and safety.Methods A total of 114 patients with pericardial effusion,who were admitted to authors' hospital during the period from May 2013 to March 2016,were enrolledin this study.The appropriate body position and suitable needle-puncturing route were selected,and CT-guided pericardial drainage with Seldinger'stechnique was performed.Results Successful puncturing and catheter drainage was obtained in all 114 patients,no any serious complication occurred.The time used for manipulation was 18-30 min.Conclusion The use of right puncture path is of great importance for the performance of CT-guided pericardial drainage for pericardial effusion,this technique is highly feasible and safe for relieving the clinical symptoms of pericardial tamponade.

Objective To investigate the clinical effectiveness of chemoablation for the treatment of lumbar disc herniations (LDH) to provide reference for its clinical treatment .Methods A total of 191 cases of LDH were divided into the group A and B . All cases were performed the CT-guided chemoablation for treating LDH .The group A conducted the intra-disc injection treatment , while the group B conducted the intra-disc and extra-disc combined injection .The cases were followed up by the modes of outpatient department or telephone on postoperative 30 ,90 ,180 d .The follow up and statistical analysis were conducted by referring to the Macnab effect evaluation criteria .Results The two groups conducted the outpatient department follow up or telephone follow up on postoperative 30 ,90 ,180 d .All cases did not appear the complications such as nerve damage ,spinal cord damage and intervertebral disc infection .In the intra-group comparison ,the VAS score had statistical difference between before and after treatment ( P<0 .05) .In the inter-group comparison ,the score after treatment in the group B was lower than that in the group A (P<0 .05) .The good effect rate on postoperative 30 d in the group A was 81 .1% (77/95) ,which on postoperative 90 d was 83 .2% (79/95) and which on postoperative 180 d was 85 .3% (81/95) .The good effect rate in the group B was 85 .4% (82/96) on 30 d ,88 .5% (85/96) on 90 d and 91 .7% (88/96) on 180 d .Conclusion CT-guided lumbar intervertebral disc minimally invasive interventional chemoab-lation has good and rapid analgesic effect ,and the intra-disc and inter-disc combined treatment has better curative effect .