With the increase number of children with obesity or diabetes,the incidence of nonalcoholic fatty liver diseases (NAFLD)in children becomes higher and higher,which has a strong impact on the growth of the children.As the pathologic change of NAFLD in children is mainly about the intrahepatic fatty infiltration, the determination of liver fat content plays an important role in the diagnosis and treatment of fatty liver.At pres-ent,the magnetic resonance technique for quantitative evaluation in hepatic fat fraction includes Dixon method, chemical shift imaging and magnetic resonance spectroscopy and so on.This article reviews the advances of MRI technique for quantification in children with NAFLD.

Objective To analyze the MRI features of intracranial ectopic germinomas compared with pathologic findings.Methods MRI manifestations of intracranial ectopic germinomas in 24 cases verified by operation and pathology were retrospectively analyzed.Results Tumors were located at suprasellar region in 5 cases,basal nucleus region in 6 cases,round lateral ventriculus in 2 cases,pellucid septum and lateral ventriculus in 1 case,3 cases suprasellar and pineal region in 3 cases,basal nucleus and pineal region in 3 cases,pineal region and round lateral ventriculus in 2 cases,lateral ventriculus,and third ventricles as well as pineal region in 2 cases.Lesions were showed marked enhancement in 22 cases and 10 cases had cystic degeneration on MRI.Pathologically,18 of 24 cases were seen clear border,cystic degeneration 11 cases,hemorrhage 2 cases and calcification 2 cases.Conclusion Intracranial ectopic germinomas are common in male children and are of MR characteristics,its MRI findings are correlated with pathology.

Objective To investigate the chemosensitivity of ovarian cancer SKOV3ip1 multicellular aggregates to cisplatin and taxol and to explore the possible mechanisms accounting for the effect Methods Liquid overlay system was employed to obtain multicellular aggregates (MCA) We detected the resistance with trypan blue exclusion testing, clonogenic assay, cell cycle profiles and apoptosis with flow cytometry Results MCA cells showed higher cell viability than monolayer cells ( P =0 045 and P =0 003, respectively). After 40 ?mol/L cisplatin exposure for 12 hours, no clone (≥50 cells) was formed After 10 ?mol/L taxol exposure for 12 hours, the clone formation showed significant difference in 100 cell group between multicellular aggregates and monolayer cells ( P

Objective To investigate the MRI features of intracranial lymphoplasmacyte-rich meningioma and the corelation between the MRI features and pathologic findings. Methods The MRI and pathologic data of 7 patients with lymphoplasmacyte-rich meningioma were reviewed retrospectively. All cases were proved by surgery and pathological examinations. Results All lesions were solitary. The tumors crawled along meninges in 6 cases and in 5 cases the tumors did not appear as mass lesions. In 2 cases, the tumors appeared as half-moon. The boundary of all of the tumors was unclear, accompanying heavy peritumoral brain edema. The brain invasion can be seen in 7 cases. The lesions showed hypo-isointense signal on T1 WI in 7 cases, hyper-isointense signal in 5 cases and hypo-isointense in 2 cases on T2 WI.Enhancement scan demonstrated marked enhancement in 7 cases. Extensive thickening of the meninges was observed in 6 cases. Pathological results showed that the cells were abundant and diversified, with a great quantity of lymphoplasmacytes, and there were typical meningeal epithelial cells area in the surgical specimen. Conclusion The MRI findings of lymphoplasmacyte-rich meningioma show some features different from other common meningiomas, which would be helpful to the diagnosis and differential diagnosis.

Objective To observe the clinical effect and safety of subanesthetic doses of ketamine and fentanyl assisted regional anesthesia.Methods 90 children received abdominal operation or limbs operation were selected in our hospital.They were randomly divided into A,B and C group with 30 children in each group.The children in group A received sub-anesthetic doses of ketamine and fentanyl in nerve block anesthesia; the children in group B received sub-anesthetic doses of ketamine and fentanyl anesthesia aided;while the children in group C accepted traditional ketamine anesthesia.The indexes of respiratory frequency,mean arterial pressure,heart rate and oxygen saturation and other basic vital signs as well as anesthesia adverse events of situation were compared.Results The respiratory frequency,mean arterial pressure and heart rate in group A and B were lower than those in group C,the difference was statistically significant(all P ＜0.05),whereas no difference was observed on the oxygen saturation between two groups(P ＞0.05).The respiratory rate,mean arterial pressure and heart rate in group A and B showed no significant difference (all P ＞ 0.05).In adverse reactions,the muscle relaxants was in good condition in group A and B,no obvious body movement and gastrointestinal adverse events observed either.Group C with muscle relaxants in good condition,but body movement and some gastrointestinal adverse reaction can be observed occasionally.Conclusion Subanesthetic doses of ketamine and fentanyl has good anesthetic effect on regional anesthesia,and can effectively reduce the occurrence of adverse reactions,which is worthy of clinical application.

Objective To compare the clinical effectivness of the treatment by open surgery and by therapeutic endoscopy for common bile duct(CBD) stones.Methods The randomised controlled trails on the open surgery or therapeutic endoscopy for CBD stones were identified by electronic-searching and hand-searching,meta-analysis was conducted using the methods recommended by the Cochrane Collaboration.Data of 407 patients included in 6 high-quality randomized controlled trials were meta-analyzed using in fixed effect model.Results Compared with endoscopic stone extraction technique,open surgery had retained stones after primary intervention rate(OR 0.39,95% CI 0.25 to 0.75,P=0.003) and additional procedures rate(OR 0.33,95% CI 0.19 to 0.60,P=0.0002) with statistical significance.But open surgery made no significant difference in postoperative complication rate(Peto OR 1.10,95% CI 0.69 to 1.76,P=0.67).Conclusion Current evidence suggests that there is no significant difference between open surgery and therapeutic endoscopy in preoperative complications,but open surgery is superior to therapeutic endoscopy in stone clearence rate.

ObjectivesTo evaluate the therapeutic result of various management for severe radiation injury of the bowels.MethodsThe clinical presentation, diagnostic approach, managements and therapeutic effects were analysed retrospectively in 28 severe radiation therapy caused enteric injury patients. In all intestinal stricture cases, partial ileal resection was performed in 14 patients, right hemicolectomy in 1 patient, rectosigmoid resection in 3 patients. Instestinal fistulae was treated by diseased segment resection and reanastomosis in 7 patients, sigmoidostomy was undertaken in 2 patients.ResultsThere was no inhospital mortality. One case suffered from low colonic fistula,4 died of recurrence of the primary tumor.Postoperative bowel function and nutrition status significantly improved in all patients.ConclusionSurgical management combined with nutrition support is safe and effective for the treatment of severe radiation caused enteric injury.

Information has become the soul of military affairs,campaign,combat support,and other various elements in the battlefield.In the particular war of 5.12 Wenchuan earthquake,in the face of sudden major geological disasters,sensitive information is the premise to effectively run the emergency response mechanism.The information collection,processing and determination permeate throughout the course of earthquake resistance & disaster relief and serve as the core in the effective commanding and coordination.

Objective To replace the imported vacuum pump with a Chinese-made instrument using a micro-ELISA negative pressure pump,to further extend the life of the machine.Methods Electric aspirator(YB.Dx23D) was used as source of negative pressure to connect with barrels of waste and the vacuum-phase of imported enzyme immunoassay instrument.The circuit was transformed,and the host matched the load,so the host and negative pressure pumps worked simultaneously.Results Compared with other aspirators,the modified electric aspirator YB.Dx23D has low-noise ratio,high negative pressure,vast flow,small volume,and mobile function.Conclusion The modified aspirator YB.Dx23D electric instrument is well used in washing ELISA plates and the effective use of waste water.Meanwhile,it can be applied to other necessary suction negative pressure(vacuum) equipment.

Objective To explore the association between variation in genes related to lipid metabolism and the susceptibility of nonalcoholic fatty liver disease (NAFLD). Methods Obese children with fatty liver aged 6~18 years old were included. All of them got ultrasonic testing, routine examination and biochemical detection. In addition, the DNA of peripheral blood was extracted and the 36 target genes related to lipid metabolism were detected by next generation sequencing. Results In 368 obese children who met the inclusion criteria, 183 children (49.7%) were detected to have NAFL . 100 children with NAFLD and 100 children without NAFLD were randomly selected from obese children. The levels of body mass, waistline, alanine aminotransferase (ALT), triacylglycerol (TG), cholesterol, low density lipoprotein (LDL) and apolipoprotein B (ApoB) in NAFLD children were all higher than those in non-NAFLD children, and there were significant differences (P all<0.05). However, the levels of aspartate aminotransferase (AST), alkaline phosphatase (ALP), apolipoprotein A1 (ApoA1), fasting blood glucose, insulin, high density lipoprotein (HDL), free fatty acid (FFA) and insulin resistance index (HOMA-IR) were not significantly different between the two groups (P all>0.05). The levels of bilirubine in the two groups were within normal range. Logistic regression analysis showed that the genes of MTTP rs2306986 (OR=2.70, 95%CI: 1.38~5.27) and MTTP rs3792683 (OR=7.34, 95%CI: 2.04~26.50) that encode microsomal triglyceride transfer protein (MTTP or MTP), and the mutation of rs738409 (OR=2.11, 95%CI:1.31~4.48) in gene PNPLA3 that encode patatin-like phospholipase domain-containing protein 3 are the independent risk factors for the occurrence of the disease. Conclusion Genovariation of MTTP rs2306986, MTTP rs3792683, and PNPLA3 rs738409 may increase susceptibility to NAFLD in children.