Medical image recognition is a technology that utilizes computer algorithms to process,analyze and understand medical images,aiming to identify various patterns,targets and objects,thereby aiding doctors in more accurate diagnosis and treatment.Current researches in medical image recognition mainly focuses on medical image classification,lesion location and segmentation,image registration and fusion,content-based image retrieval,as well as three-dimensional reconstruction and visualization.The review provides a summary of the research directions and trends in medical image recognition,introducing concepts and technologies such as deep learning,multimodal fusion,three-dimensional reconstruction and visualization.It also highlights the applications of medical image recognition in medical imaging diagnosis,pathological analysis and radiotherapy planning,while pointing out the existing problems and challenges.Furthermore,the future developments and challenges of medical image recognition technology are put forward for providing a reference for medical image recognition research and clinical medical image analysis.

Medical image recognition is a technology that utilizes computer algorithms to process,analyze and understand medical images,aiming to identify various patterns,targets and objects,thereby aiding doctors in more accurate diagnosis and treatment.Current researches in medical image recognition mainly focuses on medical image classification,lesion location and segmentation,image registration and fusion,content-based image retrieval,as well as three-dimensional reconstruction and visualization.The review provides a summary of the research directions and trends in medical image recognition,introducing concepts and technologies such as deep learning,multimodal fusion,three-dimensional reconstruction and visualization.It also highlights the applications of medical image recognition in medical imaging diagnosis,pathological analysis and radiotherapy planning,while pointing out the existing problems and challenges.Furthermore,the future developments and challenges of medical image recognition technology are put forward for providing a reference for medical image recognition research and clinical medical image analysis.

Objective:To investigate the characteristics of digestive system symptoms and its relation with the time of nucleic acid continuous positive in population infected with severe acute respiratory syndrome coronavirus 2 Omicron variant, and to analyze the abdominal computed tomography (CT) features of patients infected with Omicron variant.Methods:From April 11 to May 23, 2022, a questionnaire survey was conducted in patients infected with Omicron variant admitted to the Shanghai National Convention and Exhibition Center Fangcang Hospital. The questionnaire included basic information, the start time of nucleic acid positive, respiratory symptoms, digestive system syptoms and outcomes, etc.Combined with the clinical data, the relation between digestive tract symptoms and the time of nucleic acid continuous positive were analyzed. Thoracic and abdominal CT were performed for patients with continuous positive nucleic acid results ≥10 d, and the relationship between the abdominal CT imaging characteristics and the time of nucleic acid continuous positive was analyzed. Independent sample t-test and multivariate logistic regression were used for statistical analysis. Results:A total of 4 360 valid questionnaires were collected, including 2 475 males and 1 885 females, with a hospital stay of (6.8±4.9) d. Among the 4 360 patients, 1 979 patients (45.4%) had gastrointestinal symptoms such as loss of appetite, abdominal discomfort or pain, constipation and diarrhea. The time of nucleic acid continuous positive in patients with gastrointestinal symptoms was (7.4±5.5) d, which was longer than that of patients without gastrointestinal symptoms (6.5±3.6) d, and the difference was statistically significant ( t=3.78, P<0.001). During the isolation period in the Fangcang Hospital, the time of nucleic acid continuous positive in patients with complete remission of digestive tract symptoms was shorter than that of patients with no remission of digestive tract symptoms ((7.3±5.2) d vs. (8.5±5.7) d), and the difference was statistically significant ( t=2.25, P=0.025). The results of multivariate logistic regression analysis showed that the combination of gastrointestinal symptoms was an independent risk factor for continuous positive nucleic acid result ≥10 d ( OR=1.316, 95% confidence interval 1.294 to 2.205, P=0.046). Among the 299 patients with continuous positive nucleic acid results≥10 d, 187 cases (62.5%) had gastrointestinal symptoms, and 146 cases (48.8%) had abdominal CT findings of thickening of the gastroduodenal wall, thickening of the small intestinal wall, indistinct mesenteric vessels of the small intestine, and dilatation and pneumatosis of the colon. In patients with continuous positive nucleic acid results ≥10 d, abdominal CT indicated that patients with gastrointestinal imaging changes had a longer time of nucleic acid continuous positive than those without gastrointestinal imaging changes ((16.0±2.8) d vs. (13.0±2.1) d), and the difference was statistically significant ( t=2.62, P=0.009). Conclusions:Digestive system symptoms are common in patients infected with Omicron variant. The time of nucleic acid continuous positive in patients with gastrointestinal symptoms is longer than those without gastrointestinal symptoms. Some patients may have gastrointestinal lesions on abdominal CT.

Objective To standardize the operation processes of neonatal instrument,ensure the standards effectiveness and safety of equipment use.Methods A retrospective study had been taken on after the developments and implementations of all neonatal instruments standard operation procedure (SOP).The equipment maintenance data were collected and analyzed one year before and after the implementation of SOP.Results After the effective implementation of the SOP,the incidence of instrument repair due to misoperation,improper maintenance reduad by 59％(19/32),9/14,4/7,the instrument management efficiency was enhanced,and the safety of nurses and patients was guaranteed,and the patients satisfaction was improved,and also the quality of care was enhanced.Conclusions SOP procedure plays a very important role in improving neonatal care management and overall efficiency.It makes a continuous improvement of nursing care which is worth widely being implemented.

Objective To standardize the blood collectors′operation procedures ,prevent and control infection occurring during blood collection .Methods Conduct bacteriological monitoring and sampling of blood collectors′ hands without changing their gloves once after completion of each blood collection ,sample for 10 successive times ,start routine bacteriological culture ,record the quantity of bacterial clumps and make pathogenic microbiological identification of the cultured results 10 person times each group and one group a day for 3 consecutive days with the average values calculated .Results The blood collectors′hands were aseptic be-fore collecting the blood .When collecting blood for more than 2 person times ,bacterial clumps were detected on the hands ;the colo-ny counts and pathogenic bacteria increased with the rise of collect times .Conclusion Replacing the disposable medical film gloves after each blood collection is one of the most effective measures for prevention and control of infection .

Objective To investigate the pyschological states and behavior habits of school-age children with cleft of lip and /or palate .Methods 50 children at the age of 8-12 with cleft of lip before the first operation and their parents and 50 normal control children were tested with SAS (social anxiety scale) ,SEC(self esteem scale) ,and CBCL(children behavior checklist) .Results The rate of abnormal tested by CBCL (children behavior checklist)-parent in patients was 22% ,was higher than that in normal 8% (χ2 =3 .85 ,P<0 .05) .The scores of SAS in patients was higher than those in control (t=5 .29 ,P<0 .01) .Conclusion School-age chil-dren with cleft of lip and/or palate had obvious psychological and behavioral problems ,thus ,corresponding nursing and health edu-cation should be applied .

【Objective】To observe the anti-depression effect of Shugan Hewei Granules(SHG) on mice with behavioral despair.【Methods】Kunming mice were randomized into 5 groups: model group,low-,moderate-and high-dose SHG groups(in the dosages of 0.25,0.5 and 1.0 g?kg-1?d-1respectively) and chloropromazine(CP) group.Tail suspension test and forced swimming test were used to investigate immobility time of mice.【Results】Moderate-and high-dose SHG shortened the immobility time obviously during tail suspension test and forced swimming test(P