Medical electron linear accelerator and Gamma-ray stereotactic radiotherapy system,two kinds of large scale medical equipment,both have an medical treatment on patient by imposing a high-level of radiation.The accuracy of deferent dose and validity of therapy programe play a very important role to patients'security and treatment effect.Both the military and local governments Pay a lot of attention to the two kinds'allocation and quality control.As technical administrative department.the Medical Equipment Application Quality Test and Research Center of PLA analyse current situation of the two kinds detailedly and point out the existing problems based on quality of the two kinds of equipment used in military medical agencys.

Objectives To observe anatomical location of the top branch of plantaris arch which extends from the superficial branch of the medial plantar artery,design and apply flap base on it. Methods On the basis of the anatomical data from 8 feet of 4 fresh cadavers and probed of the Doppler from 50 feet of normal person,defined the anatomic location and body surface projection of the top branch of plantaris arch,a type of new flap design were introduced in the paper. Results The flaps have been used in six cases clinically to treat skin defect of the hand meanwhile,sensation of the flap was regained by suturing nerve.All flaps survived,the appearance of the flaps were excellent,the function of the injured hands were recovered well. Conclusions The design of the flap is reasonable,it is suitable that the free medialis pedis flap of the top branch of plantaris arch is used to repair a small skin defect of the hand.

[Objective] To investigate effect of specific nursing on quality of life of postoperative women with gynecologic malignant tumor.[Method]46 cases were randomly divided into two groups: the control group and the experiment group. The control group received traditional nursing,the experiment group received specific nursing. The quality of life was surveyed by SF-36 Scale and Olson Marriage Quality Test. [Result]The quality of life of experiment group was improved significantly(P

The source, super-antioxidant activity, biological safety and application in medicine, health food and animal feed industry of natural astaxanthin are reviewed in present paper. The industrialization prospect of astaxanthin in China is also proposed.

EphA1,the first member of the Eph receptor tyrosine kinase family,not only plays a pivotal role in embryonic development and angiogenesis,but also expresses in some types of adult human tissues.Its specific characteristics of Eph/ephrin binding and the Eph/ephrin signaling transduction are fundamentally involved in tumor initiation,progression and metastasis.The expression levels of EphA1 vary considerably in different types of normal tissues and tumors,or even in different phases of tumor development,suggestive of its functional pluralism.Intensive studies of EphA1 on angiogenesis,carcinogenesis and metastasis may provide a method for the early diagnosis and a potential target for the treatment of cancers.

Castleman's disease(CD),known as giant lymph node hyperplasia,is a rare lymphoproliferative disorder,whose etiology has not been definitively established.Clinically CD is categorized into unicentric and multicentric,and histologically,subdivided into three subtypes,hyaline vascular variant,plasma cell variant and mixed variant.Different variants usually require inconsistent therapeutic measures and have different prognoses.The present paper gives an overview of the pathogenesis,treatment and prognosis of CD,with emphasis on the stroma-rich variant,a special subtype of CD of the hyaline vascular variant.

[Objective]To observe the clinical treatment of calcaneus fracture with poking reduction and artificial bone grafting technique.[Method]From 1999.6 to 2005.5,60 cases with recent calcaneus fracture,including 46 feet in 38 males and 24 feet in 22 females with falling injure;aged from 20 to 65,were equally divided into two groups,including the observed group treated with poking reduction and artificial bone grafting and the control group with steel needle pry-poking reposition.[Result]During followed up for 6-60 months,average 20.7months,it was notable different in Maryland foot score,and the same in Bhler′,Gissane′ and Perie′ angle in X-ray in post-operation and pre-operative between observed group and the control.[Conclusion]It showed us that the technique of poking reduction and artificial bone grafting was liable to operate and could provide exactly efficiency.

Objective This research examined the effect ofmicrobubble contrast agent plus ultrasound on the permeability of blood-brain barrier,and explored whether it affects the efficacy of chemotherapeutic drugs on cerebral glioblastoma.Methods Wistar rats were divided into three groups to find the optimal concentration of ultrasonic contrast agent.To identify the best ultrasound mode that affected the permeability of blood brain barrier,we employed transmission electron microscopy for study of brain ultrastructure.Western blotting was used to detect the tight junction protein claudin-5.Evans blue staining of brain tissues was utilized to identify the best ultrasonic contrast agent concentration and mode.Rat glioma cells (line 9L) were injected into Wistar rats.After temozolomide chemotherapy,the tumor size was measured and the tumor marker GFAP in serum was detected by ELISA.Results The best contrast agent concentration which increases permeability of BBB in rats was found to be lml/kg and the best ultrasound mode was intermittentlytriggered pulses lasting for 10min (with interval was set at 400ms).More Evans blue passed the blood-brain barrier in ultrasonic cavitation effect group than in control group (P＜0.05).After temozolomide chemotherapy,more tumor marker GFAP was detected in ultrasonic cavitation effect group than in control group (P＜0.05).Conclusion The permeability of BBB was increased and more temozolomide went through BBB when the rats were subjected to intermittently triggered ultrasonic pulses and were injected at contrast agent at lml/kg,which could help to achieve better therapeutic efficacy for glioblastoma.

Objective To investigate the surgical techniques and clinical effects of anterior retropharyngeal approach in treatment of C2/3 fracture and dislocation.Methods Twelve patients with C2/3 fracture and dislocation treated via anterior retropharyngeal approach between November 2011 and April 2013 were included in the study.There were 7 males and 5 females aged from 19 to 65 years (mean,35 years).Primary pathologies included 7 patients with traumatic C3 fracture,2 with Hangman fracture and 3 with fracture and dislocation of the anteroinferior margin of C2 vertebrae.C2-C4 vertebrae were exposed using anterior retropharyngeal approach,followed by C2/3 discectomy or C3 corpectomy,decompression,interbody cage fusion or titanium mesh cage fusion,and anterior internal fixation.Results Exposure of lesion was sufficient for all patients and all operations were completed under direct vision,with mean operation time of 140 minutes and mean blood loss of 120 ml.One patient with reduced tone after operation gradually recovered in a week; one with dysphagia after operation recovered in 3 months; one with skin necrosis 7 days after operation was recovered by changing dressing; for the rest,there were no complications of incision hematoma,infection,or asphyxia.Ten patients were followed up for mean 15 months,which showed bony fusion in mean 6 months.At final follow-up,no implant loosening or displacement occurred.Conclusion Anterior retropharyngeal approach to C2/3 fracture and dislocation provides sufficient exposure of lesions,minor trauma,and less bleedings and complications,but as the local anatomy is complicated,there indeed exists a learning curve of the approach.

Objective To explore the indication,technology and clinical significance of laparoscopic choledocholithotomy and primary suture in treatment of choledocholithiasis.Methods 78 patients with choledocholithiasis were divided into two groups receiving respectively laparoscopic choledocholithotomy and T-tube drainage treatment,and laparoscopic choledocholithotomy and primary suture after common bile duct exploration.The time of operation,postoperative hospital stay and complications were analyzed and compared.Results Bile leakage occurred in 2 cases in the primary suture group and 3 cases in the T-tube drainage group;No residual stones or biliary stricture was found in either groups.The time of operation,postoperative complications were not statistically different (P ＞ 0.05).The difference in postoperative hospital stay and GI function recovery time between the two groups was statistically significant (P ＜ 0.05).Conclusion In well selected cases,the primary suture of common bile duct after laparoscopic choledocholithotomy is feasible and safe.