Stent angioplasty for the treatment of symptomatic stenosis of middle cerebral artery / 介入放射学杂志

Objective To investigate the safety and feasibility of endovascular stent angioplasty in treating symptomatic stenosis of middle cerebral artery.Methods Endovascular angioplasty with coronary stents was performed in 27 patients with symptomatic stenosis of middle cerebral artery.The clinical results were reviewed and analyzed.Results Of the total 27 patients,successful placement of the coronary stents Was achieved in 24.Angiography immediately after the procedure showed that the stenotic degree of the diseased artery was markedly decreased from preoperative (80±19)%to postoperative (8±4)%,the improvement was very obvious.Percutaneous transcatheter angioplasty had to be employed in two cases because of the failure of stent placement.A mean follow-up period of 18 months was carried out.During the following up period no transient cerebral ischemia attack occurred in 25 patients and no newly-developed cerebral infarction in region fed by the responsible vessels occurred either.Re=irrigation cerebral hemorrhage was seen in one patient,which occurred three hours after the placement of the stent.In one case the placed stent fell off and immigrated into the siphon of internal carotid artery,and the displaced stent Was took out later with a catching apparatus.In another case re-stenosis occurred six months after the stenting.Conclusion Percutaneous endovaacular stent angioplasty is a safe and effective treatment for symptomatic stenosis of middle cerebral artery,although its long-term results need to be further evaluated.

Human excited electroencephalogram model and its location in brain / 生物医学工程学杂志

The aim of this study was to identify the characteristics of human excited electroencephalogram and the excited location in brain. The subjects were excited by taking a fixed quantity of caffeine. Electroencephalographic signals were collected using with 128 channels Phoenix Digital EEG and compared before and after the subjects drank coffee. The results showed obvious differences and compared with the ones before being excited electroencephalogram. After being excited we found that the lower frequency composition was restrained in the region below 10 Hz, the high frequency composition was increased significantly,and a wave crest of 38 Hz was produced in every acquisition point with the height around 200. Then the excited region was located in brain with the software of ASA 3 Course (designed by ANT company of Germany) and found that the excited location was focused on the area of the middle abdomen in the pons' side near bulbar when a person was exciting.

Design of an HIS compatible with multi-format document / 医疗卫生装备

With the analyses of correlative techniques, such as ODBC and ASP, and the application characteristics of HIS, this paper develops an object-oriented design project and its application system.