OBJECTIVE:To observe the efficacy and safety of levofloxacin and capreomycin combined with chemotherapy regi-men in the treatment of multi-drug resistant tuberculosis(MDR-TB). METHODS:84 MDR-TB patients were randomly divided in-to observation group (42 cases) and control group (42 cases). Observation group received 0.75 g Capreomycin sulfate for injec-tion,addint into 100 ml 0.9% Sodium chloride injection,intravenous infusion,once a day+0.4 g Levofloxacin hydrochloride tab-let,orally,once a day+0.2 g Protionamide tablet,orally,3 times a day+0.3 g Pasiniazid tablet,orally,3 times a day+0.5 g Pyra-zinamide tablet,orally,4 times a day. Control group received 0.4 g Amikacin sulfate injection,adding into 100 ml 0.9% Sodium chloride injection,once a day,intravenous infusion+0.3 g Ofloxacin tablet,orally,twice a day+Protionamide tablet (the same dose with observation group)+Pasiniazid tablet (the same dose with observation group)+Pyrazinamide tablet (the same dose with observation group). All patient were given 0.1 g Glucuronolactone tablet,orally,3 times a day. The treatment course for both group was 12 months. Sputum negative conversion rate,negative conversion time,symptom improvement time,lesion absorption and lung cavity closing,and cell immune indexes (CD4+CD25+/CD4+,CD4+CD25+CD127low/CD4+),IL-17 level before and after treatment,and the incidence of adverse reactions in 2 groups were observed. RESULTS:The sputum negative conversion rate,ab-sorption rate,lung cavity closing and narrowing cases in research group after 3,6,9,12,18 months treatment were significantly higher than control group,sputum negative conversion time,symptom improvement time in observation group were significantly lower than control group,the differences were statistically significant(P<0.05). Before treatment,there were no significant differ-ences in CD4+CD25+/CD4+,CD4+CD25+CD127low/CD4+,IL-17 level in 2 groups(P>0.05). After treatment,CD4+CD25+/CD4+,CD4+CD25+CD127low/CD4+ in 2 groups were significantly lower than before,and observation group was lower than control group,IL-17 level was significantly higher than before,and observation group was higher than control group,the differences were statistically significant (P<0.05). And there was no significant difference in the incidence of adverse reactions in 2 groups (P>0.05). CON-CLUSIONS:Levofloxacin and capreomycin combined with chemotherapy in the treatment of MDR-TB,it can reduce T regulatory cells,increase IL-17 level,do not increase the incidence of adverse reactions.

Digital image processing and magnetic resonance imaging from magnetic resonance image processing technique. This technique will not only promote MRI's research and development, but also bring new challenges for digital image processing. Because the information in the MRI is very important to medical treatment, it is a primary task that how to decrease noise from MRI by use of PC and digital image processing. In this paper, we analyzed the noises from a variety of sources, and introduced all kinds of techniques to reduce these noises.
Algorithms ; Image Processing, Computer-Assisted ; methods ; Magnetic Resonance Imaging ; methods

Objective:To investigate the vitamin D level of pulmonary tuberculosis patients in Qinghai Province, and to explore the correlation between vitamin D level and pulmonary tuberculosis.Methods:From May to September 2020, 208 bacterial confirmed pulmonary tuberculosis patients who were admitted to The 4th People′s Hospital of Qinghai Province were enrolled as the pulmonary tuberculosis group, and 129 healthy people who underwent physical examination during the same period were enrolled as the healthy control group. Independent sample t test and chi-square test were used for statistical analysis. Results:The deficiency rate of vitamin D was 11.06%(23/208) in the pulmonary tuberculosis group, which was higher than that (3.10%(4/129)) in the healthy control group, and the difference was statistically significant ( χ2=6.840, P=0.009). The vitamin D level was (56.84±20.03) μg/L in the pulmonary tuberculosis group, which was lower than that ((67.39±17.07) μg/L) in the healthy control group, and the difference was statistically significant ( t=5.154, P<0.01). The vitamin D levels were not different between the newly treated ((56.66±20.02) μg/L)) and retreated pulmonary tuberculosis patients ((59.11±20.81) μg/L) ( t=0.468, P=0.650). The vitamin D level of simple pulmonary tuberculosis patients ((57.82±20.01) μg/L) was higher than that of pulmonary tuberculosis patients combined with other diseases ((48.08±18.46) μg/L), and the difference was statistically significant ( t=2.132, P=0.034). Conclusion:Pulmonary tuberculosis is associated with decreased vitamin D levels, and patients with pulmonary tuberculosis are more likely to suffer from decreased or deficient vitamin D, which suggests clinicians considering the vitamin D status when treating pulmonary tuberculosis patients.