Objective:To explore the clinical features of perimesencephalic nonaneurysmal subarachnoid hemorrhage (PNSH).Methods:The clinical manifestation,CT,treatment and prognosis of eighteen cases were analyzed.Results:All patients were conscious,whose Hunt-Hess scale were Grade Ⅰ to Ⅱ.In 18 cases headache developed,15 (83.3%) vomiting,14(77.8%)meningeal irritation,and 2(11.1%) focal neurologic deficits.All patients recovered completely.Conclusion:PNSH is a distinct clinical entity with few manifestations,good prognosis and low rate of severe complications.Repeated angiography should be avoided for PNSH.

It is an important goal of the modern medical education to culture the innovative ability of medical students. In the clinic teaching of thoracic surgery, illuminating innovative thinking, optimizing and recombining teaching contents, flexible utilizing of teaching approach and methods, and innovating practical teaching are in favor of creating the innovative thinking and innovative ability of the students.

Antimicrobial resistance has been identified as one of the world′s most pressing public health threats.The number of antibiotic -resistant bacteria and the diversity of molecular mechanisms of resistance have in-creased sharply in recent years.The presence of antimicrobial resistance in children complicates patient management and arouses widespread concern.The use of antimicrobial agents is the single most important factor leading to the deve-lopment of resistance.New effective antimicrobial agents has been needed but has not kept pace.Antimicrobial -resis-tant infection can be prevented by immunization as well.Appropriate and judicious use of antimicrobial agents is the most important factors contributing to control resistance.Clinicians should collaborate well with microbiologist and know well about resistant bacteria and its proper antimicrobial drugs.A good application of antibiotic formulary restriction has the potential to decrease antimicrobial resistance.An antimicrobial resistance surveillance between regions and countries is urgently needed.It can help us to understand and slow antimicrobial resistance in the long run.

Pediatric patients usually require intravenous infusion maintenance fluid. Currently, maintenance fluid with 1/5 tension, 1/2 tension, and isotonic contraction were commonly used and lfuid with 1/5 tension and even with no tension is still commonly used. In recent years, a large number of high quality randomized controlled trials and meta analyses showed that compared with the traditional low tension maintenance lfuid, 1/2 tension or isotonic maintenance lfuid can effectively reduce the incidence of acute hyponatremia and the adverse reactions such as hypernatremia while hypernatremia were not caused. A number of national guidelines also recommend the use of 1/2 tension or isotonic contraction as a standard for maintaining liquid. In this paper, the present status and recent progress in the use of intravenous maintenance lfuid in pediatric patients were reviewed.

Objective To summarize the clinical features of severe fever with thrombocytopenia syndrome(SFTS),to improve the understanding of the disease,and strengthen the prevention and treatment of the disease,thus to improve the survival rate.Methods To analyze the patients with SFTS in our hospital,including their clinical characteristics and treatment methods.Results Of 210 patients,115 cases were mild,95 cases were heavy cases.191 cases were cured and discharged,among them,115 cases were mild,and the others were severe in all cases.The total effective rate was 90.95%,with a total mortality of 19 cases,with a fatality rate of 9.04%.Conclusion SFTS mainly manifested as fever,fatigue,nausea,vomiting,diarrhea.The treatment is mainly symptomatic treatment of early cases can not be identified,can be added with doxycycline.Those have basic disease and poor prognosis often have severe syndromes.White blood cell,platelet count and lactate dehydrogenase are related to the prognosis of the disease.

Objective To master the various characteristics of EBCT and it's applications in clinic in depth. Methods Different scan modes were compared with each other. Results EBCT had the advantage of high speed in scanning and high resolving power of time without mechanical abrasion due to the using of electron beam. Conclusion EBCT is suitable for the examinations of cardiovascular system, and moving organs and uncooperative patients, and also for the application to CT fluoroscopy.

Objective To verify the usefulness of the corresponding compensation techniques for MRI artifacts after analyzing their generation mechanism. Methods Different compensation techniques were used to eliminate relative artifacts from the angle of improving background,calibrating software and hardware,editing parameters or instructing patients in scanning the patient or phantom with 1.0TMR and 1.5TMR. Results Artifacts were controlled to different extents and the quality of most MR images were improved. Conclusion Most artifacts can be eliminated completely by the use of corresponding compensation techniques while some others only be reduced a little or shifted.

Objective To verify whether it is useful to apply the corresponding preventive measures for the radio frequency(RF) field artifacts in MR images by the research of their influencing factors.Methods Preventive measures were taken according to the factors producing RF field artifacts in MR images.Results Various RF field artifacts in MR images were reduced,shifted or even eliminated completely.Conclusion Most RF field artifacts in MR images can be controlled by the application of the relative preventive measures.

Objective To evaluate the application effect of workload statistic software.Methods According to the actual workflow of the hospital and concrete management index sign,the workload of statistics procedure was designed using Dephi7.0.Results "Comprehensive Management System in Medical Imaging Department" run stable and accurate.What's more,its functions greatly facilitated workload statistics.Conclusion The system plays an important role in excellent workflow,exaltation of work efficiency,reasonable allotment of manpower and material resources,etc.

Objective To evaluate the clinical value of fMRI software.Methods Patients were scanned with the corresponding fMRI software to observe the change of imaging signals in tissue's functional zone.Results The signals in the relative functional zone of tissues varied with their functions.Consulation fMRI software has great value in such clinical applications as tissue physiology,biochemistry and metabolism functions.