Humans ; COVID-19 ; Quarantine ; Renal Dialysis ; SARS-CoV-2 ; Hospitals

OBJECTIVE: To determine the feasibility of reduced field-of-view diffusion-weighted imaging (rFOV DWI) with multi-b values to detect functional variability in transplanted kidneys. MATERIALS AND METHODS: Using a 3T MRI scanner, multi-b rFOV DWI of transplanted kidney or native kidney was performed in 40 renal transplantation recipients and 18 healthy volunteers. The patients were stratified, according to an estimated glomerular filtration rate (eGFR): Group 1, eGFR ≥ 60 mL/min/1.73 m2; Group 2, eGFR ≥ 30 mL/min/1.73 m2 and < 60 mL/min/1.73 m2; Group 3, eGFR < 30 mL/min/1.73 m2. Total apparent diffusion coefficient (ADCT), perfusion-free ADC (ADCD) and perfusion fraction (FP) of kidneys were calculated and compared among the four groups. Correlations between the imaging results and eGFR were assessed. RESULTS: All volunteers had eGFR ≥ 60 mL/min/1.73 m2, while 16, 16, and 8 patients were included in Groups 1, 2, and 3, respectively. In the renal cortex, ADCT was higher in Group 1 ([1.65 ± 0.13] × 10−3 mm2/s) than Group 3 ([1.44 ± 0.11] × 10−3 mm2/s) (p < 0.05), and the inter-group differences of FP values were significant (all p < 0.05) (0.330 ± 0.024, 0.309 ± 0.019, 0.278 ± 0.033, and 0.250 ± 0.028 for control group, Groups 1, 2, and 3, respectively). Renal cortical ADCT, ADCD, FP, and renal medullary ADCT and FP correlated positively with eGFR (r = 0.596, 0.403, 0.711, 0.341, and 0.323, respectively; all p < 0.05). When using 0.278 as the cutoff value, renal cortical FP had a sensitivity of 97.1% and a specificity of 66.7% for predicting decreased renal function. CONCLUSION: Multi-b rFOV DWI presents transplanted kidneys with high resolution, which is a promising functional tool for non-invasively monitoring function of transplanted kidneys.
Diffusion ; Glomerular Filtration Rate ; Healthy Volunteers ; Humans ; Kidney Transplantation ; Kidney* ; Magnetic Resonance Imaging ; Perfusion ; Sensitivity and Specificity ; Transplantation ; Volunteers

Objective To compared and analyze the therapeutic effect of conservative treatment on distal radius fracture as compared with surgical treatment,so as to provide evidence for the diagnosis and treatment of distal radius fracture.Methods A retro-spective analysis was made on the clinical data of 162 patients with distal radius fracture treated in our hospital from January 2005 to De-cember 2011.In accordance with the different treatment methods,the patients were divided into 2 groups:the conservative treatment group and the surgical treatment group.The patients in the conservative treatment group consisted of 95 patients,including 58 males and 37 females,with an age range between 21 and 64,averaging 52.8 years old.There were 47 cases of extra-articular fracture (type A fracture),28 cases of partial intra-articular fracture (type B fracture)and 20 cases of complicated intra-articular fracture (type C fracture).They were fresh closed fractures and were sent to hospital within 8 hours after fracture.After manual reposition,they had plaster splint for 4 to 7 weeks.The surgical treatment group contained 40 male and 27 female patients,with an age range between 22 and 65,averaging 53.1 years old.The control group included 31 type A fractures,22 type B fractures and 14 type C fractures.T-form steel plates were used for fixation of fractures after surgical reposition.Medical follow-ups were performed 12 to 41 months after surgery (averaging 14.5 months),and therapeutic effects were observed by using reposition scores and function test scores.Results Of the
162 patients,139 patients fulfilled the 12 to 41-month (averaging 14.5 months)medical follow-ups,including 80 cases in the conser-vative treatment group and 59 cases in the surgery group.With regard to function test scores,35 cases were of excellent rate,20 cases were of good rate and 4 cases were of moderate rate for the surgical treatment group.As for the conservative treatment group,45 cases were of excellent rate,25 cases were of good rate,8 cases were of moderate rate and 2 cases were of poor rate.Excellent rates for type A,B and C fractures accounted for 89.47% (17 /19),94.12% (16 /17)and 92.31% (12 /13)respectively,all with satisfactory therapeutic results.As for conservative treatment group,excellent rates for type A,B and C fractures accounted for 94.59% (35 /37), 91.67% (22 /24)and 68.42% (13 /19)respectively.There was no statistical significance in the reposition scores of type A and B fractures and function test scores,when comparisons were made between the surgical and conservative treatment groups(P >0.05). However,the reposition scores of type C fracture and function test scores for the surgical treatment group were obviously superior to those of the conservative treatment group,with statistical significance (P <0.01).Conclusion As for type A and B fractures,manual reposition plus external splint fixation and surgical reposition plus internal fixation could all achieve relatively good therapeutic results, whereas surgical reposition plus internal fixation for type C fracture could achieve better results.

Objective To explore the infection rate,the correlated risk factors and knowledge of Helicobacter Pylori infection among the outpatients with 13C-urea breath test (13C-UBT).Methods 13C-UBT was performed to evaluate the HP infection status.Self-designed questionnaires were adopted to conduct investigation among 500 outpatients with 13C-UBT and then the results were analyzed.Results The HP infection rate was 46％ in our research.Demographic factors of ages in different groups,on the job or not,HP testing times and different education degree as well as having susceptible factors of family history of HP infection or not,using the public chopsticks or not,sitting up late,history of digestive disease were statistically significant.Positive HP infection was statistically significant different in people with different knowledge of HP infection.71.8％ of the patients had never heard of the HP could cause none digestive system diseases,61.4％ of the patients didn't know how to use drug combination,64.6％ of patients didn't know the review time and 53.4％ of patients did not know how to prevent and control HP infection.Conclusions There is high HP infection rate in outpatients receiving 13C-UBT.The infectious sources of HP commonly exist in population,and the route of transmission was various.We should focus on the susceptible people and strengthen health education,advocate eating separately,improve sanitary consciousness,add HP-test in the health test and enhance the reasonable intervention about HP infection.