ObjectiveTo explore the value of CT virtual endoscopy in the treatment strategies in low rectal cancer surgery.MethodsFifty- seven cases of rectal cancer in Jining First Hospital were collected,preoperative rectum CT virtual endoscopy,detailed records of patients with rectal invasion and the circumstances surrounding lymph nodes were investigated.Differences were compared in patients after routine pathological examination.And the distance of the tumor from the anal margin was compared with the preoperative rectum on rectal examination and rectal CT virtual endoscopy.ResultsPreoperative rectum CT virtual endoscopy had no significant difference in evaluation of metastases of the surrounding lymph nodes.Compared with postoperative pathological examination( x2 =2.5,P ＞ 0.05 ),while had significant difference in evaluation in perirectal infiltration( x2 =4.44,P ＜ 0.05 ).Rectal examination and rectum CT virtual endoscopy had no significant difference judgement of the tumor from the anal margin ( P ＞ 0.05 ).ConclusionsCT virtual endoscopy has a great significance in the preoperative evaluation of rectal cancer surgical treatment strategies,which should be further studied.

To demonstrate the possibility of radiotherapy for echinococcosis of rats and to explore its mechanism of action, the effects of different doses of 6 MV X-ray radiotherapy on the activity of Echinococcus granulosus in rats were investigated. After being irradiated by 10, 20, 30 and 40Gy of 6 MV X-ray, a lot of examinations were carried out, such as examination of the ultrastructure of the Echinococcus granulosus cysts in rat with electron microscope, the total amount of proteins and Ca2+ ion in hydatid cyst fluid(HCF) .The potassium-pyroantimonate(PPA) cytochemical method was used to demonstrate whether the blocked calcium channels would be one reason for radiotherapy on Echinococcus granulosus cysts in rat. It was found that the ultrastructures of E.granulosus cysts showed different extents of alterations or damages with abnormal changes and destruction in tissues or cells of cysts. The total protein amount in HCF was increased, while Ca2+ ions in HCF were reduced obviously in the treated groups of rats , especially in high dose groups. With PPA, some electron-dense precipitates were observed on the mitochondria and endocytoplasmic reticulum in the treated groups. It is evident that the structure of cysts of Echinococcus granulosus in rat can be damaged by radiotherapy with certain extent of the quantity-efficiency relationship.

Objective To discuss the value of combining superselective mesenteric angiography (SSMA)with methylene blue in-jection for localization of the Obscure Gastrointestinal Bleeding (OGIB).Methods 12 patients presenting with OGIB had preopera-tive localization of the bleeding site by SSMA.The microcatheter was remained inside the bleeding artery branch after angiography. Then the methylene blue was injected via the microcatheter for localization during exploratory laparotomy and the dyed intestine was then removed.Results The detected rate of bleeding sites by using preoperative SSMA was 100%.The lesions in total 12 patients were found quickly during the exploratory laparotomy.The length of the removed intestine was 9 -12 cm (median,10 cm).After followed up for 10-24 months (median,18 months),all patients with OGIB had no recurrence.Conclusion The method of SSMA combined with the use of methylene blue injection is a safe and effective procedure for the localization of OGIB and could be beneficial for increasing the surgical success rate of hemostasis.

We developed a universal probe based microRNA detection assay and applied it to detect microRNA-146a in human brucellosis,testing the possibility of using it as diagnosis signature.By using orthogonal design,the annealing temperature,probe concentration and commercial kits were optimized and the assay was developed.Total RNAs were isolated from plasma of human brucellosis and healthy control,and microRNA-146a was detected and compared.Results reveal that the optimized universal probe assay was established,which was more specific than the SYBR GreenI assay,and had a wider range of amplification.Compared with healthy control,the application of universal probe assay for the detection of serum microRNA146a in patients with brucellosis was significantly inhibited (P＜0.01).Implying the potential of microRNA-146a as biomarker in diagnosis of brucellosis.It is suggested that universal probe based assay is a universal,specific and sensitive method for microRNA detection.MicroRNA-146a represents a potential biomarker for human brucellosis diagnosis.

Objective To evaluate the cause and the treatment of the vagus nerve reflex in patients with hemoptysis during bron-chial artery embolization (BAE).Methods 1 12 patients with much hemoptysis were enrolled,9 of whom represented vagus nerve reflex in the process of interventional embolization.Results In 9 patients with mixed vagal reflex,5 occurred in the process of bron-chial artery embolization,1 in removing of sheath,1 in hemostasis by compression and 2 in returning to the ward.The intraoperative vagus reflex during BAE was related to over tension and unnormolized operation,and it improved by block of vagus nerve,raising blood pressure and fluid expansion without serious complications.Conclusion Vagus nerve reflex during BAE should be noticed, and early detection and timely intervention may improve its prognosis.

To investigate the dose effect of isocenter difference during IMRT dose verification with the 2D chamber array. The samples collected from 10 patients were respectively designed for IMRT plans, the isocenter of which was independently defined as P(o), P(x) and P(y). P(o) was fixed on the target center and the other points shifted 8cm from the target center in the orientation of x/y. The PTW729 was used for 2D dose verification in the 3 groups which beams of plans were set to 0 degrees. The γ-analysis passing rates for the whole plan and each beam were gotten using the different standards in the 3 groups, The results showed the mean passing rate of γ-analysis was highest in the P(o) group, and the mean passing rate of the whole plan was better than that of each beam. In addition, it became worse with the increase of dose leakage between the leaves in P(y) group. Therefore, the determination of isocenter has a visible effect for IMRT dose verification of the 2D chamber array, The isocenter of the planning design should be close to the geometric center of target.
Gamma Rays ; Humans ; Radiotherapy Dosage ; Radiotherapy, Intensity-Modulated ; instrumentation ; methods

Objective To evaluate the technical success rate,effectiveness and safety of transcatheter arterial chemoembolization (TACE)via the omental branch in the treatment of hepatocellular carcinoma (HCC)with blood supply from the omental branch. Methods 45 patients with HCC fed by the omental branch who had undergone TACE were evaluated retrospectively.Results All patients had undergone several therapeutic procedures including TACE before the revelation of the blood supply from the omental branch,8 patients had a history of surgery of hepatic resection for HCC.45 patients had 48 tumors total,52 omental branches were observed angiographically,48 omental branches (9 2%)were successfully embolized.Stenosis or occlusion of the hepatic artery was observed in 37 patients(82%).The alpha fetoprotein (AFP)levels were reduced from 5.05－4 246.89 ng/mL(mean,1 748.52 ng/mL)before treatment to 3.78－1 048.32 ng/mL(mean,287.46 ng/mL)after TACE 4－6 weeks later.The tumors diminished in size in 32 patients,stabilized in 13 patients(29%),however,recurred 2－6 months (mean,3 months)after TACE.28 patients died after 6－18 months (mean,10 months),17 patients were alive for 3－32 months (mean,14 months),but tumor recurred in 8 patients.Severe complications were not observed in any patient.Conclusion TACE via the omental branch is safe,effective and had high technical success rate,it is important to embolize all the feeding arteries at the same time for reducing the recurrence rate.

Objective: To investigate current status and associated factors of preschool children’s physical fitness, in order to provide scientific basis for improving preschool children’s physical fitness. Methods: A total of 3 240 preschool children aged 3-6 years old in Kunshan city were selected through cluster sampling method. They were surveyed about physical fitness and influencing factors. Results: The number of excellence of preschool children’s physical fitness was 269, and the rate was 8.30 percent. The excellence rates of preschool children’s physical fitness in girls, high grade, non-residency in Jiangsu Province were higher(10.87%, 10.96%, 14.88%), and the excellence rate of preschool children’s physical fitness in premature group was lower(4.31%)(P<0.05). Further unconditioned logistic regression analysis found that girls, middle and high grade and non-residency in Jiangsu Province were the protective factors for the excellence of preschool children’s physical fitness, OR values were 1.96, 1.94, 2.45 and 1.87, respectively; premature was a risk factor for the excellence of preschool children’s physical fitness, OR value was 0.47. Conclusion Preschool children in Kunshan have poor physical fitness, especially in boys, low grade and premature groups. Education department and health department should work together to improve the preschool children’s physical fitness.

Objective: To understand the characteristics and causes of pesticide poisoning in Xuzhou city, and provide basis for formulating prevention and control measures. Methods: The cases of pesticide poisoning in Xuzhou City from 2005 to 2017 were collected from "Pesticide Poisoning Report Card" . The data were analyzed and assessed by EpiData. The SPSS 22.0 software was used for statistical analysis. Results: During the thirteen years, there were a total of 8092 cases of pesticide poisoning, among which, the number of occupational pesticide poisoning was 1 408, accounting for 17.4% of the total number of cases, 14 patients died, the case fatality rate was 0.1%. There were 2, 992 cases of male poisoning, accounting for 36.97% of the total number of cases, and 5, 100 cases of female poisoning, accounting for 63.03%. There were 6684 non-productive pesticide poisonings, accounting for 82.6% of the total number of cases; 387 deaths occurred, and the mortality rate was 5.8%. Among non-productive poisonings, the incidence of oral pesticide poisoning was 84.3%, and the incidence of accidental poisoning by pesticides was 15.7%. Organophosphorus pesticides poisoning cases accounted for the majority of oral pesticide poisoning cases. The overall incidence of pesticide poisoning showed a downward trend. The age of non-productive pesticide poisoning cases was mainly 15-44 years old, and the number of cases of poisoning were 4 029 cases (60.28%) . With the increase of age, the mortality rate of poisoning cases was higher, especially for those over 60 years old who died of oral pesticide poisoning (40.1%) . The peak of pesticide poisoning began to increase in the second quarter and reached its peak in the third quarter. Conclusion Although the cases of pesticide poisoning reported in Xuzhou City have been declining in recent years, the situation is still severe. The proportion of oral pesticide suicide accounts for a large proportion, and the mortality rate of elderly and female is relatively high, and the government should pay more attention. Workers should conduct safety education and psychological counseling to improve the knowledge and consciousness of safe use of pesticides.

Objective:To explore the value of cardiovascular MR (CMR) T 1 mapping in evaluating myocardial injury in patients recovered from COVID-19. Methods:The clinical and image data of 15 patients with COVID-19 (9 with moderate clinical manifestation, 6 with severe clinical manifestation) who underwent CMR screening at 3 months after being discharged from the Second People′s Hospital of Fuyang City during May 2020 to June 2020 were prospective collected. Fifteen COVID-19 patients were selected as case group, and another 11 healthy volunteers were selected as control group. A standardized CMR protocol included cine, native and enhanced T 1 mapping, late gadolinium enhancement (LGE). Cardiac functional parameters, native T 1 value of left ventricular and extracellular volume fraction (ECV) were measured. One way ANOVA was used to assess the difference between CMR parameters among moderate and severe manifestation groups and control group, and LSD- t was used to assess the difference between the three groups. Results:LGE value was negative in all subjects. ECV values were higher in recovered COVID-19 patients with either moderate (27.9%±2.7%) or severe manifestation (30.0%±3.7%) than control group (23.2±1.9%) ( P<0.05); there was no significant difference of ECV values between recovered COVID-19 patients with moderate and severe manifestation ( P=0.100). There was no difference of native T 1 values and other functional and morphologic parameters of left ventricular and right ventricular among recovered COVID-19 patients with moderate and severe manifestation and control group ( P>0.05). Conclusion:CMR myocardial tissue ECV increase in patients who recovered from COVID-19, suggesting subclinical myocardial injury.