Objective To understand the research status and development trend of TCM in the treatment of lower limb arteriosclerosis obliterans(LLASO);To provide reference for related research.Methods The literature on the treatment of LLASO by TCM was retrieved from CNKI,Wanfang Data and VIP from September 18,1992 to September 18,2022.NoteExpress 3.6.0 was used to manage and remove repetition.Excel 2019 was used to analyze the trend of the number of articles published.VOSviewer 1.6.18.0 and CiteSpace 6.1.R6 were used to analyze the co-occurrence,clustering,timeline and emergence of the included authors,institutions and keywords,and knowledge graph was drawn.Results A total of 1 095 articles were included,and the number of articles published showed an overall upward trend;1 915 authors were involved,and the author with the most articles was Chen Bainan,forming research teams with Xi Jiuyi,Cao Yemin and Ge Jianli as the cores respectively;the main research institutions were Shandong University of Traditional Chinese Medicine,Beijing University of Chinese Medicine,Heilongjiang University of Chinese Medicine and so on,but there was little cooperation among them.High-frequency keywords included arteriosclerosis,diabetes,clinical efficacy,gangrene,hemorheology,etc.,forming 13 clusters such as qi deficiency and blood stasis,Simiao Yong'an Decoction,angiogenesis and so on.The focus of research was external treatment of TCM,clinical efficacy,blood stasis syndrome,medication law,Buyang Huanwu Decoction.Conclusion The research heat of TCM in the treatment of LLASO has gradually increased,and the modern research in this field from 1992 to 2022,such as gene detection and molecular biology based on big data platform,is the research hotspot in this field.The development trend is the combination of internal treatment and external treatment of TCM,as well as the interdisciplinary research of integrated traditional Chinese and Western medicine combined with interventional therapy and other techniques.

Objective To explore the application of 64 slice low dose spiral CT in pediatric paranasal sinus examination.Methods Sixty children with paranasal sinuses were randomly divided into three groups(control group,low dose 1 group,low dose 2 group),and were given conventional dose scanning(100 KV in tube voltage,100 mA in tube current),low dose scanning(100 KV in tube voltage,45 mA in tube current),and low dose scanning (100KV in tube voltage,25 mA in tube current).The single scan weighted CT dose index (CTDIw) of each patient was recorded and compared;and the quality of the scanned images of each group was evaluated by two chief physicians by blind method.Results Compared with conventional dose group,low dose 1,2 groups had significantly lower CTDIw,and the dose decreased for 59.23％ and 72.42％ respectively.The image quality of the low-dose 1 group did not change significantly,and all the images could meet the requirements of clinical diagnosis;but the image quality of the low-dose 2 group decreased significantly,and the images of 3 patients could not meet the requirements of clinical diagnosis.Conclusion Appropriate reduction of scanning parameters for paranasal sinuses children can not only obtain good quality images,but also effectively reduce the radiation dose of patients.

Objective To explore the application of 64 slice low dose spiral CT in pediatric paranasal sinus examination.Methods Sixty children with paranasal sinuses were randomly divided into three groups(control group,low dose 1 group,low dose 2 group),and were given conventional dose scanning(100 KV in tube voltage,100 mA in tube current),low dose scanning(100 KV in tube voltage,45 mA in tube current),and low dose scanning (100KV in tube voltage,25 mA in tube current).The single scan weighted CT dose index (CTDIw) of each patient was recorded and compared;and the quality of the scanned images of each group was evaluated by two chief physicians by blind method.Results Compared with conventional dose group,low dose 1,2 groups had significantly lower CTDIw,and the dose decreased for 59.23％ and 72.42％ respectively.The image quality of the low-dose 1 group did not change significantly,and all the images could meet the requirements of clinical diagnosis;but the image quality of the low-dose 2 group decreased significantly,and the images of 3 patients could not meet the requirements of clinical diagnosis.Conclusion Appropriate reduction of scanning parameters for paranasal sinuses children can not only obtain good quality images,but also effectively reduce the radiation dose of patients.