Magnetic Resonance Diffusion Kurtosis Imaging versus Diffusion-Weighted Imaging in Evaluating the Pathological Grade of Hepatocellular Carcinoma.

Purpose: To investigate the diagnostic efficacy of diffusion kurtosis imaging (DKI) and conventional diffusion-weighted imaging (DWI) for pathological grading.

Methods: From December 2015 to January 2017, consecutive patients suspected of having hepatocellular carcinoma (HCC) without prior treatment were prospectively enrolled in this study. MRI examinations were performed before surgical treatment.

[Optimum extraction technology of total triterpenoids from Hypodematium sinense].

Objective: To optimize the extraction technology of total triterpenoids from Hypodematium sinense.

Methods: With 5% vanillin-glacial acetic acid solution and 72% sulfuric acid as chromogenic agent and the content of total tripenoids as index,using single factor experiment and orthogonal test,the optimal extraction condition was determined.

Results: The optimal conditions were solid-liquid ratio 1:12, 60% ethanol concentration, and ultrasonic extraction time of 60 min at 60 degrees C.

[Polymorphism of CYP11A1 gene in Chinese patients with polycystic ovarian syndrome].

Objective: To investigate the association between polymorphism of cytochrome P450 subfamily XIA polypeptide 1 (CYP11A1) gene and polycystic ovarian syndrome (PCOS) in Chinese population.

Methods: From May 2005 to Dec. 2008, 290 PCOS cases treated in the First affiliated hospital of Anhui Medical University matched with 344 reproductive women as controls were enrolled in this study.

[The current prevalence of intestinal parasites in Beijing].

Following the requirements of the "National survey on the current status of the major human parasitic diseases", the investigation was conducted in June-October 2002 in 5 districts (counties) of Beijing with a sample of 7912 people. The overall prevalence rate of intestinal parasites was 2.9%, significantly lower than the result from the first survey in 1988-1989 (34.

[Evaluation on the safety and immunogenicity of Canada split influenza virus vaccine].

Objective: To evaluate the safety and immunogenicity of Canada split influenza virus vaccine.

Methods: Cluster samples were by randomly chosen and divided into split vaccination group and homoimported influenza vaccination group.

Results: After injection, fever-reaction and local reaction rates of 'trial' group were found as 3.

[Study on the risk factors related to severe acute respiratory syndrome among close contactors in Beijing].

Objective: To understand the risk factors on severe acute respiratory syndrome (SARS) among their contacts and to develop effective strategy for its control.

Methods: Available epidemiological data of SARS cases and close contacts were reviewed and analyzed by SPSS.

Results: Out of the 2195 close contacts, 138 (6.