Panyu District Research Articles

Research on the Visual Image Shaping of Tourism Brand in Panyu District, Guangzhou

The prominent visual image of regional tourism brands often gives people a strong attraction and profound influence, increases the recognition of regional tourism, and stimulates consumers' consumption desire. For tourism practitioners, the creative application of tourism brands and visual images is conducive to product innovation and promotion. The first part of this paper introduces the research background, purpose and significance of the subject; The second part defines the concept and discusses the basic theory. The third part takes Panyu District as an example, analyzes the development and change of tourism brand image, probes into the factors that affect tourism brand, and studies the visual image building of tourism brand law on this basis. The aim is to provide some reference ideas for regional tourism brand visual image building and brand quality improvement.

Analysis of Coupling Coordination Degree between Permanent Population and Per Capita Disposable Income in Guangzhou Based on GIS

Regarding the economic development of the region, the per capita disposable income is closely related to the number of residents. A method of coupling coordination degree with ArcGIS analysis is used in this article for analyzing the degree of match between per capita disposable income and resident population in Guangzhou, Guangdong Province, China, between 2016 and 2020, using the method of coupling coordination degree and combining ArcGIS analysis. Based on the results, it appears that the majority of the residents of Guangzhou reside in Panyu District, Baiyun District, and Tianhe District, while Nansha District and Conghua District have relatively small populations. Despite the relatively high population income in Tianhe and Yuexiu Districts, Yuexiu Districts have significantly lower coupling coordinations between the per capita disposable income and the permanent population than Tianhe Districts, and Baiyun Districts and Panyu Districts have relatively high coupling coordination degrees. The results show that Panyu District and Baiyun District, which are located at the peripheries of the city center, are becoming the preferred areas for high-income residents. These processes are mutually causal.

The Impact of Rail Transit on Accessibility and Spatial Equity of Public Transit: A Case Study of Guangzhou, China.

The urban rail transit network provides the possibility for people to shift from car to public transit for travel. This paper clarified the relationships among public transit, accessibility, and equity and studied the impact of rail transit on public transit accessibility that incorporates the measure of travel time and transit fare and the impacts’ spatial equity. The results show that rail transit contributes to the similar distribution between high rate of changes of time-based accessibility communities and fare-based accessibility communities, which are located nearby the rail transit lines. The degree of inequity in travel time is higher than the degree in transit fare in two scenarios. Due to the well-connected bus transit in the city center, absolute changes in travel time are slight, while relative changes are high. The rail transit has promoted the improvement of public transit equity in some areas. The difference between the time-based accessibility of Conghua District, northern and southern Baiyun District, Huadu District, Nansha District and southern Panyu District, and other communities is getting smaller, which is conducive to the improvement of spatial equity. The results provide theoretical support for the development of an integrated multimodal public transit system.

Traffic Noise Reduction Strategy in a Large City and an Analysis of Its Effect

A noise reduction strategy was proposed for Panyu District of Guangzhou City based on its traffic noise map, which considered both road and railway traffic noise. Commercial software was applied to compute the noise maps with and without noise barriers based on the field traffic flow measurements. Noise compliance maps were further developed to assess the effects of noise barriers on the quality of the sound environment. The change in populations exposed to unhealthy traffic noise with noise barriers was calculated, and the group noise indicators Gdn and Gnight, which indicate the populations of highly annoyed and sleep-disturbed people, were evaluated. The results showed that the traffic noise level was significantly decreased after the implementation of noise barriers. It was predicted that with the strategy of applying suitable noise barriers, the overall areas under heavy noise pollution could be reduced by 24.5 and 24.3 km2 during daytime and nighttime, respectively. Meanwhile, the total areas that could meet the regulated standard for noise levels were increased by 97.4, and 66.9 km2, corresponding to compliance rate increments of 18.38% and 12.62%, respectively, in daytime and nighttime. The results further revealed that the installation of noise barriers could significantly reduce the population of highly annoyed people, while the reduction of the population experiencing sleep disturbances was insignificant.

Optimized Schemes of “Infiltration”, “Storage”, and “Drainage” Measures against Urban Waterlogging in Plain River Network Regions

Urban waterlogging has risen to be an urgent problem awaiting solutions in China these years, and “infiltration”, “storage”, and “drainage” are considered the major and most direct measures against this problem. In the present work, the waterlogging alleviation mechanism of these three measures is analyzed; and with Huangbian Village in Panyu District of Guangzhou, China, as a study case, one-dimensional, two-dimensional, and pipe network coupling hydrodynamic models were established to explore the optimal schemes of “infiltration”, “storage”, “drainage” measures against urban waterlogging and which measure is the most effective one, providing a reference for scientific prevention and alleviation of urban waterlogging in cities. Effect assessment shows that the “storage” is the most effective measure because reducing the impermeability near the waterlogged site, deploying storage tanks upstream of the waterlogged site, and in the case of submerged discharge, lowering the downstream water level can reduce the waterlogged area by 16%, 81%, and 16%, respectively. The comprehensive measures of “infiltration”, “storage”, and “drainage” reduced the waterlogged area by 87%, which is superior to a single measure. The present work is expected to provide some reference for the prevention and alleviation of urban waterlogging in cities on a plain with intensive river networks.

Optimization of Site Selection for Emergency Medical Facilities considering the SEIR Model.

Since the outbreak of COVID-19, the rapid construction and operation of Wuhan Vulcan Mountain Hospital and Raytheon Hospital have attracted positive responses from local and international observers. At the same time, it has also highlighted the urgency for the construction of emergency medical facilities for public health emergencies. Before construction, the practical location of medical facilities is the basis for improving the city's emergency management ability. Based on the classic susceptible, exposed, infected, and recovered (SEIR) epidemic model and epidemic data in Guangzhou, we established a multi-stage time-delay SEIR epidemic model that is suitable for epidemic research in Guangzhou. According to the results of the model, the five areas with the highest number of infected patients were identified, which included Baiyun District, Panyu District, Haizhu District, Tianhe District, and Zengcheng District. We then centralized infected individuals at five demand points. Based on the distribution of these points and by combining the characteristics of the emergency medical facilities, we built and solved the set covering location decision model, and considered the economy, society, and environment as the starting points to optimize the site location. Finally, based on simulations, we concluded that appropriate site selection can increase the time required to reach the maximum number of patients and reduce the proportion of infected and exposed people by 11.3% and 1.11%, respectively. This is indicative of the effectiveness of the site selection model and the rational selection of facility points in this study. It solves the optimization problem of the location decision of emergency medical facilities for public health emergencies in China, and also provides some valuable references for site selection decisions of emergency medical facilities in other areas.

Urban Traffic Noise Mapping Using Building Simplification in the Panyu District of Guangzhou City, China

This study constructed an urban traffic noise map (including road and railway traffic noises) of the Panyu District in Guangzhou City by combining field measurement and numerical modeling methods. This noise map was then used to identify the area covered by different noise quality levels and the compliance rate of traffic noise in various acoustic environment functional areas throughout the day, night and day–night. The results showed that traffic noise pollution along the traffic arteries was severe. The area with heavy noise pollution was as large as 157.5 km2 (29.72%) and 146.2 km2 (27.59%) in the day and night, respectively. The total area of the Panyu District that complied with the noise limit in the day and night was 326.5 km2 (61.62%) and 87.2 km2 (16.46%), respectively. The outcomes of the current efforts can provide new technical guidelines for novel construction and analysis methods for large scale urban traffic noise mapping.

A Hybrid BSO-ACO for Dynamic Vehicle Routing Problem on Real-World Road Networks

The Dynamic Vehicle Routing Problem With Time Windows (DVRPTW) is an NP-hard problem, which has attracted a lot of attention in the past decades due to its many practical applications in logistics. In order to better describe the actual logistics distribution scenario, this paper studies the DVRPTW based on real road networks and proposes the hybrid BSO-ACO algorithm, which is a combination of Brain Storm Optimization (BSO), Ant Colony Optimization (ACO) and Neighborhood Search (2-opt, relocate, exchange). The algorithm 1) uses ACO to generate new individuals from the same cluster formed by BSO, and increases exploitation by ACO’s pheromone accumulation, 2) harnesses the 2-opt, relocate, and exchange to increase exploration to avoid the algorithm from falling into local optima. We construct a test set by extracting the real road networks in Panyu District, Guangzhou, China and compare the hybrid BSO-ACO algorithm with other algorithms on this test set. The computation experiments show the effectiveness and efficiency of the hybrid BSO-ACO algorithm.

Analysis of specific lipid metabolites in cord blood of patients with gestational diabetes mellitus

This work aimed to clarify the interaction between the fetus and pregnant patients with gestational diabetes mellitus (GDM), the lipid metabolomics analysis of the fetal umbilical cord blood of GDM patients and normal pregnant women were performed to screen out the specific lipid metabolites for pathogenesis of GDM. From 2019–2020, 21 patients with GDM and 22 normal pregnant women were enrolled in Hexian Memorial Hospital, Panyu District, Guangzhou. The general information such as weight, height, age, body mass index (BMI) before pregnancy were analyzed. Non-targeted metabonomic detection and analysis were performed in umbilical cord plasma using LC-MS method. The age, BMI, delivery methods, and infant weight were different between GDM and control. There were 167 lipid metabolites in umbilical cord blood associated with GDM. Among them, 158 upregulated and 9 downregulated in GDM. There were 13 dysregulated metabolites with C < 30, including Lyso-phosphatidyl-colines LPC 16:0, 18:2, 18:1, 18:0, 20:4 and 22:6, glycerophosphocholines PC O-16:1, oleoylcarnitine CAR 18:2 and 18:1, dihexosylceramides Hex2Cer 13:0;2O, phosphatidylethanolamine PE O-22:6_2:0 and PE O-22:6_3:0 and sphingomyelin SM 8:0; 2O/11:0. Those metabolites were associated with glycerophospholipid metabolism and sphingolipid metabolism. Therefore, Lyso-phosphatidyl-colines, glycerophosphocholines, oleoylcarnitine, dihexosylceramides, phosphatidylethanolamine, and sphingomyelin were main lipid metabolites of GDM, which might be used for diagnosis and treatment of GDM.

Effectiveness of cascading time series models based on meteorological factors in improving health risk prediction.

Meteorological factors, which are periodic and regular in a long run, have an unignorable impact on human health. Accurate health risk prediction based on meteorological factors is essential for optimal allocation of resource in healthcare units. However, due to the non-stationary and non-linear nature of the original hospitalization sequence, traditional methods are less robust in predicting it. This study aims to investigate hospital admission prediction models using time series pre-processing algorithms and deep learning approach based on meteorological factors. Using the electronic medical record data from Panyu Central Hospital and meteorological data of Panyu district from 2003 to 2019, 46,089 eligible patients with lower respiratory tract infections (LRTIs) and four meteorological factors were identified to build and evaluate the prediction models. A novel hybrid model, Cascade GAM-CEEMDAN-LSTM Model (CGCLM), was established in combination with generalized additive model (GAM), complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN), and long-short term memory (LSTM) networks for predicting daily admissions of patients with LRTIs. The experimental results show that CGCLM multistep method proposed in this paper outperforms single LSTM model in the prediction of health risk time series at different time window sizes. Moreover, our results also indicate that CGCLM has the best prediction performance when the time window is set to 61 days (RMSE = 1.12, MAE = 0.87, R2 = 0.93). Adequate extraction of exposure-response relationships between meteorological factors and diseases and suitable handling of sequence pre-processing have an important role in time series prediction. This hybrid climate-based model for predicting LRTIs disease can also be extended to time series prediction of other epidemic disease.

Cultural heritage tourism development in Panyu District, Guangzhou: community perspectives on pride and preservation, and concerns for the future

ABSTRACT This exploratory study observed local resident views on cultural heritage tourism (CHT) development in the Panyu District of Guangzhou, a setting synonymous with Lingnan cultural heritage sites. Using semi-structured interviews with Panyu residents between November 2018 and February 2019, it was reported that many were in support of CHT growth and believed that it had yielded positive social impacts despite an absence of formal community involvement in the genesis of CHT. The most cited benefits included a heightened sense of community pride and an increased awareness of the need to preserve Lingnan culture. However, whilst most residents exhibited supportive attitudes, others suggested that emergent negative impacts were now apparent, including increasing volumes of tourists and the ‘mobility paradox’ of traffic congestion they presented during ‘Golden Week’ holidays. Several participants suggested that these issues could eventually lead to local community opposition and a demand for engagement with local government authorities. Thus, this study underscores the importance of engaging local residents in situ due to rapid tourism growth and the implications of Golden Weeks on local communities that neighbour CHT sites. These findings will be of value to policymakers and other tourism stakeholders involved in developing and managing growing CHT attractions.

Epidemiological characteristics and diagnosis of suspected occupational diseases in Guangzhou from 2006 to 2018

Objective: To investigate the epidemiological characteristics and late diagnosis of suspected occupational diseases in Guangzhou from 2006 to 2018. Methods: The cases of suspected occupational diseases reported in Guangzhou from January 1, 2006 to December 31, 2018 were collected and followed up to the end of 2018. The cases of suspected occupational diseases were analyzed statistically. Results: A total of 1502 suspected occupational cases were reported in Guangzhou from 2006 to 2018, including suspected occupational otorhinolaryngological and oral diseases (58.59%, 880/1502) , suspected occupational chronic poisoning (25.03%, 376/1502) and suspected occupational pneumoconiosis (11.72%, 176/1502) . The key reporting areas were Huangpu District (27.50%, 413/1502) and Panyu District (20.91%, 314/1502) . The key reporting industries were manufacturing industry (80.36%, 1207/1502) , among which railway, ship, aerospace and other transportation equipment manufacturing industry (13.26%, 160/1207) , automobile manufacturing industry (12.51%, 151/1207) and general equipment manufacturing industry (10.19%, 123/1207) were the main industries. The main type of reported economy was private economy (39.95%, 600/1502) . The scale of the key reporting enterprises was medium and small-sized enterprises (31.09%, 467/1502 and 34.62%, 520/1502) . As of December 31, 2018, 263 cases were diagnosed with occupational diseases, and the diagnosis rate was 17.51%. Conclusion: The number of suspected occupational diseases reported in Guangzhou from 2006 to 2018 is large, and the overall diagnosis rate of suspected occupational diseases is low. It is necessary to strengthen the supervision and management of key diseases, key regions, and key industries of suspected occupational diseases. It is suggested that the reporting system of suspected occupational diseases should be standardized as soon as possible.

How did collectivity retention affect land use transformation in peri-urban areas of China? A case of Panyu, Guangzhou

Abstract It is argued that the competition for land rent gap or surplus is inclined to incur redevelopment. However, there exist various models of redevelopment due to different relationships among stakeholders. In this research, we introduce the framework of collective retention constituted by “power relations” and “path-dependence.” We do so in order to explain why collective retention emerged within the scope of collective land redevelopment in the Pearl River Delta, an area where the state began granting collectives land redevelopment rights via a land profit-sharing scheme in 2009. Taking the Panyu district of Guangzhou as a case study, this paper examines how collective retention affects land transformation from rural to urban use in peri-urban areas. It finds that preference discrepancy in land-use change among local state, collectives, and villagers generates significant conflicts in rural renewal process, making the cost to achieve consensus significantly high. Moreover, collectives’ path dependence on the rental economy hinders their incentives to engage in village redevelopment. The retention of collective ownership has slowed the process of land use transformation and strengthened landholding within the rentier class.

Epidemiological characteristics of newly diagnosed cases of occupational noise deafness in Guangzhou from 2011 to 2018

Objective: To provide scientific evidence for the prevention and control strategies of noise-induced deafness, to analyze the epidemiological characteristics of the occupational noise-induced deafness diagnostic applicants in Guangzhou city during 2011-2018. Methods: In March 2019, by consulting the occupational disease diagnosis records, we investigated the distribution of all 471 occupational noise-induced deafness diagnostic applicants in Guangzhou Occupational Disease Prevention and Treatment Center from 2011 to 2018. Frequency and constituent ratio were used to describe the distribution. Results: From 2011 to 2018, there were 471 cases of occupational noise-induced deafness diagnostic applicants and 211 of the applicants were diagnosed as occupational noise-induced deafness (44.8%, 211/471) . The new cases were mainly mild (83.9%, 177/211) , with the predilection age of 40.0-49.0 years old (41.7%, 88/211) and the predilection seniority of 5.0-9.9 years (38.9%, 82/211) . Among the new cases, there were mainly males (88.6%, 187/211) . Most of the new cases were distributed in Nansha district (23.2%, 49/211) , Huangpu district (22.7%, 48/211) and Panyu district (21.8%, 46/211) . Besides, in terms of industry distribution, they were concentrated in manufacturing industry (82.0%, 173/211) . The scale of enterprises was mainly medium-sized (42.7%, 90/211) , and the most of their economic type was domestic-funded (40.8%, 86/211) . Conclusion: Although most of the newly diagnosed cases of occupational noise deafness in Guangzhou are mild, they still need to be paid attention to and strengthen the noise industry protection education.

An Uncertainty Assessment of Human Health Risk for Toxic Trace Elements Using a Sequential Indicator Simulation in Farmland Soils

Toxic trace elements in farmland soils are potential threats to human health. In this study, we collected soil samples from the farmlands of southern Guangzhou. We used a sequential indicator simulation (SIS) to deal with the problem of skewed distribution in the sample data. We assessed the human health risks, as well as the uncertainties, of five toxic trace elements: arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), and mercury (Hg). The results were as follows: (1) The risk indices of two trace elements (Cd and Hg) were less than the standard threshold, which means that there was no human health risk due to Cd and Hg in the study area. However, the maximum risk indices of As, Cr, and Pb exceeded the standard threshold. In particular, the maximum risk index of Pb was twice the standard threshold; (2) The risk probabilities of As and Cr were less than 25% in most areas, and only a few parcels of farmland have a 100% risk probability. The risk map of Pb was used to identify contiguous areas of high-risk probability (i.e., 75%–100%) in the center of the study area. (3) E-type estimation by the SIS method overestimates the risk when the number of samples with concentrations above the threshold have a large proportion of total samples. Our conclusions are as follows: (1) The simulation results show that areas with high-risk indices were concentrated in the Panyu District, which is close to the Pearl River and the core urban area of Guangzhou; (2) Except for Pb, these trace elements are not likely to pose health risks in southern Guangzhou; (3) This study considers the risk probability found with the SIS method to be more reliable for visualizing regional risk.

Delimiting urban development boundaries in metropolitan fringe with economic and ecological perspectives:A case study of Panyu District, Guangzhou City

Delimiting urban development boundaries in metropolitan fringe with economic and ecological perspectives:A case study of Panyu District, Guangzhou City

Association between elevated blood glucose level and non-valvular atrial fibrillation: a report from the Guangzhou heart study

BackgroundTo estimate the prevalence of elevated blood glucose level (EBG, including type 2 diabetes mellitus and impaired fasting glucose), and its association with non-valvular atrial fibrillation (NVAF) in Guangzhou, China.MethodsThe population-based follow-up Guangzhou Heart Study collected baseline data from July 2015 to August 2017 among 12,013 permanent residents aged > 35 from 4 Guangzhou districts. Two streets (Dadong and Baiyun) in the Yuexiu District, and one street (Xiaoguwei) and two towns (Xinzao and Nancun) in the Panyu District were chosen as representative of urban and rural areas, respectively. Each participant completed a comprehensive questionnaire, and underwent physical examination, blood sample collection for laboratory testing, electrocardiography, and other evaluations. Multivariable logistic regression analyses were used to estimate the independent association between hyperglycemia and NVAF prevalence.ResultsThe prevalence of EBG in overall study population was 29.9%. Compared with residents without EBG, the odds ratio (OR) for AF among residents with EBG was significantly higher (1.94, 95% confidence interval [CI]: 1.40–2.70, P < 0.001), even after multivariate adjustment for metabolic abnormalities (OR = 1.60, 95% CI: 1.14–2.25, P = 0.007), and driven by women (OR = 1.80, 95% CI: 1.12–2.91, P = 0.016).ConclusionsIn Guangzhou, China, prevalence of EBG is high among residents aged > 35 years and associated with a multivariate adjusted increase in prevalence of NVAF overall and in women.

Study on Arrangement of Waterlogging Control Storage Tank in City Village

In recent years, the problem of waterlogging in Chinese cities has become increasingly serious, and it is extremely urgent to solve the problem of waterlogging. Urban rainwater storage plays an important role in the prevention and control of waterlogging disasters. The control effect of the internal control of the storage tank is closely related to its layout position. On the basis of comprehensive consideration of the hydrological mechanism for reducing rainwater floods and the requirements for urban flood control, the Huangbian City Village of Panyu District, Guangzhou City was taken as an example to construct a one-dimensional, two-dimensional, pipe network coupled hydrological hydrodynamic model to study urban locusts and the optimal arrangement of the storage tank. The results show that compared with the centralized storage tank is arranged at the lower section of the pipe network bottleneck section and waterlogging point, arranging the storage tank in the upper section of the bottle neck section and the upstream of waterlogging point can not only significantly reduce the drainage pressure of the pipe network, reduce the flood area of waterlogging, but also reduce the storage capacity of a single storage tank and improve the feasibility of engineering construction. The arrangement method can effectively realize the storage function of the storage tank.

Comment on “Free-Radical Formation by the Peroxidase-Like Catalytic Activity of MFe2O4 (M = Fe, Ni, and Mn) Nanoparticles”

RETURN TO ISSUEPREVCommentNEXTORIGINAL ARTICLEThis notice is a correctionComment on “Free-Radical Formation by the Peroxidase-Like Catalytic Activity of MFe2O4 (M = Fe, Ni, and Mn) Nanoparticles”Bernard Meunier*Bernard MeunierLaboratoire de Chimie de Coordination du CNRS (LCC−CNRS), 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, FranceUniversité de Toulouse, 31077 Toulouse Cedex 4, FranceSchool of Chemical Engineering and Light Industry, Higher Education Mega Center, Guangdong University of Technology (GDUT), 100 Waihuan Xi Road, Panyu District, Guangzhou 510006, P. R. China*E-mail: [email protected] (B.M.).More by Bernard Meunier and Anne Robert*Anne RobertLaboratoire de Chimie de Coordination du CNRS (LCC−CNRS), 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, FranceUniversité de Toulouse, 31077 Toulouse Cedex 4, France*E-mail: [email protected] (A.R.).More by Anne Roberthttp://orcid.org/0000-0002-9092-6776Cite this: J. Phys. Chem. C 2019, 123, 46, 28513–28514Publication Date (Web):October 22, 2019Publication History Received25 September 2019Revised22 October 2019Published online22 October 2019Published inissue 21 November 2019https://doi.org/10.1021/acs.jpcc.9b09075Copyright © 2019 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views613Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (360 KB) Get e-AlertsSUBJECTS:Magnetite,Oxides,Peptides and proteins,Nanoparticles,Catalytic activity Get e-Alerts

Prediction of congenital diaphragmatic hernia with abnormal course of fetal superior mesenteric artery detected by ultrasound in first-trimester

Objective To investigate the clinical value of abnormal course of fetal superior mesenteric arteries (SMA) detected by ultrasound during the first trimester (11-13+6 weeks) in predicting congenital diaphragmatic hernia (CDH). Methods This study enrolled women who underwent fetal nuchal translucency (NT) screening during the first trimester in Central Hospital of Panyu District from March to December 2017. Low-speed high-definition flow imaging was used to observe the course of fetal SMA, and it was regarded as abnormal when the angle between SMA and abdominal aorta >90°. Once abnormal course of the SMA was suspected, the position of fetal thoracic cavity and abdominal organs would be scanned carefully. Furthermore, ultrasound examinations would be repeated at 16-18, 20-24, 28-32 and 37-40 weeks of gestation. Fetus diagnosed as CDH by ultrasound would be scheduled for MRI or autopsy to confirm the diagnosis. Pregnancy outcomes of all cases were followed up by telephone. Descriptive statistical analysis was used in this study. Results A total of 6 899 gravidas (6 964 fetuses) underwent NT scan during the first trimester were enrolled and the SMA of all fetuses were successfully displayed. Three cases with abnormal course of the SMA were identified. Two of them were diagnosed with left CDH at 17+ and 23+ weeks of gestation, which was confirmed by autopsy after termination of pregnancy, and the other one terminated pregnancy in first trimester due to a large omphalocele. Among the 6 961 fetuses with normal SMA, the pregnancy outcomes of 6 120 were successfully followed up, only one of which was found to have left CDH at 32 gestational weeks by ultrasound examination, and was later confirmed by neonatal MRI after delivery. No other fetal CDH was detected. Conclusions Abnormal course of the SMA identified in early pregnancy may be a simple and effective indicator for CDH that allow early intervention and treatment. Key words: Pregnancy trimester, first; Mesenteric artery, superior; Congenital abnormalities; Hernias, diaphragmatic, congenital; Forecasting