奋斗
北江流域将现接近百年一遇洪水 气象专家：多地累计降水量突破4月历史纪录_我的网站
A | 4月21日，央视新闻记者从广东省三防总指挥部了解到，受强降雨补充影响，北江流域将出现接近百年一遇洪水。
B |
On the island, artificial intelligence (AI) systems are helping doctors interpret medical images, while remote consultations connect local physicians with specialists thousands of kilometers away.
Bridging this distance is Yuan Gang, a radiologist with the 35th Chinese medical team in Zanzibar, who combines local imaging, cloud-based AI analysis, and real-time specialist consultations.
For years, Zanzibar's healthcare system has faced challenges in diagnosing complex diseases, particularly because of limited imaging expertise, heavy workloads, and the lack of advanced diagnostic tools, said local physician Haitham Hamudu.
Imaging interpretation, often described as the "eyes" of modern medicine, has been especially constrained by limited expertise, heavy workloads, and a lack of advanced tools, Haitham said.
By linking the hospital's imaging system with the First People's Hospital of Lianyungang in east China's Jiangsu Province, he has introduced a three-layer diagnostic approach, which includes initial reading by local doctors, AI-assisted detection and classification, and quality control through Chinese specialist review.
This hybrid model is enabling doctors in Zanzibar to access the precision and standards of top-tier Chinese hospitals without requiring patients to leave the island.
"Technology is allowing us to overcome distance and resource gaps," Yuan said. "It is not just about solving one case, but about building a system that improves care for many patients."
One of the most striking cases involved a young Zanzibari child suffering from recurrent vomiting and lethargy.
After reviewing the child's Magnetic Resonance Imaging scans, Yuan diagnosed hydrocephalus but found the underlying cause unclear. He immediately initiated a remote consultation with neuroradiology experts in the Chinese city of Lianyungang.
By jointly reviewing the imaging data and clinical records, the team identified the hidden cause, provided a precise diagnosis and treatment recommendations, giving local doctors a clear path forward and the child a renewed chance at recovery.
Beyond individual cases, Yuan has introduced AI-powered imaging tools to improve diagnostic accuracy in Zanzibar.
He said many women have dense breast tissue, making breast cancer harder to detect with conventional mammography. AI-assisted mammography now analyzes images, classifies lesions using the internationally recognized Breast Imaging Reporting and Data System, and helps doctors assess malignancy risk.
In one case, a 42-year-old woman with mild breast pain showed no obvious abnormalities on routine examination. AI, however, detected two hidden nodules and accurately classified their risk, helping doctors avoid unnecessary procedures while ensuring timely follow-up.
Similarly, AI-assisted lung imaging is improving the early detection of pulmonary nodules that are often missed in manual readings.
In one case, a 56-year-old man with a chronic cough was initially diagnosed with inflammation. Yuan's review, supported by AI analysis, identified four small nodules, including one with high-risk features, prompting closer monitoring and potentially preventing the progression of an early tumor.
Beyond diagnosis, Yuan is helping local doctors adopt AI tools, standardized reporting systems, and structured diagnostic methods through hands-on training and case-based teaching, improving diagnostic accuracy while strengthening local capacity.
The AI imaging initiative is part of a broader digital healthcare partnership between China and Tanzania's Zanzibar, Yuan said.
The hospital and its partner institution in Lianyungang have established regular remote multidisciplinary team consultations, bringing together specialists in neurosurgery, oncology, and other disciplines to jointly review complex cases and develop treatment plans.
"I have never seen this kind of consultation before," said local physician Haitham. "So many experts working together, providing practical solutions. It is very inspiring."
Bao Zengtao, leader of the Chinese medical team, said remote consultations not only improve patient care but also enhance the professional capacity of local healthcare workers.
Yuan added that the ultimate goal is to build a sustainable model that can be expanded across Africa, ensuring more patients have access to accurate diagnosis and timely treatment.
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C | 广东省水文局预报：4月21日11时，北江支流连江高道（昂坝）（清远英德市西牛镇）水位34.83米，相应流量7070立方米/秒，超警戒3.33米。预计，4月22日1时高道（昂坝）站流量将出现9000立方米/秒的洪峰流量，达100年一遇，相应水位37.3米，超警戒5.8米。△清远英德文峰塔孤悬江中 4月21日11时，北江干流英德（五）站（清远英德市英城镇）水位涨至33.55米，超警戒7.55米（警戒水位26.00米）。预计，英德（五）站将于21日20时出现34.5米的洪峰水位，超警戒8.5米。 4月21日11时，飞来峡水文站流量16300立方米/秒，对应水位21.02米，超警戒3.02米（警戒水位18米）。
D | 预计，飞来峡水文站流量4月22日14时出现19000立方米/秒洪峰流量，接近100年一遇，相应水位22.3米，超警戒4.3米。 4月21日11时，北江干流石角站（清远市清城区石角镇）水位涨至10.02米，相应流量15300立方米/秒。预计，4月22日20时达到19500立方米/秒的洪峰流量，接近100年一遇，相应水位12.5米，超警戒1.5米。 相关新闻 广东韶关市武江区政府办：此前失联的江湾镇已经恢复联系 21日，受强降雨影响，广东韶关市武江区江湾镇遭受洪涝灾害。部分网友反映，目前江湾镇通讯中断，无法与镇内取得联系。对此，武江区回应称，由于塌方等原因导致道路受阻，20日下午救援力量徒步进入，展开救援。 21日下午，记者从武江区政府办获悉，此前通讯中断的江湾镇已经恢复通讯，此前失联是因为通讯线缆中断。 据媒体此前消息，李女士（化名）告诉记者，她的父母和近80岁的奶奶都在江湾镇湾仔村生活，从昨天上午9时开始，她就无法与家人取得联系，“看到洪水的消息就开始打电话，快一天了还没联系上，急死人。
E | ”截至21日上午9时30分记者采访时，李女士仍未能打通父母的电话。 此外，许多网友晒出自己给在江湾镇的亲朋好友打电话的记录，这些电话记录都处于未接通状态。还有网友晒图，表示当地出现了山体滑坡、泥石流等现象。 气象专家：多地累计降水量突破4月历史纪录 中央气象台首席预报员马学款介绍，4月以来，副热带高压比常年同期偏强，有利于南海和孟加拉湾水汽向南方地区输送，同时高原槽和南支系统活跃，导致南方地区强降水过程频繁、降水持续时间偏长。
F | 另外，江南、华南等地气温比常年同期明显偏高，大气含水量丰富、不稳定能量高，导致对流发展旺盛、降雨强度高，多地累计降水量突破4月历史纪录。 中央气象台预计，21日至22日，江南南部和东部、华南中东部和南部等地仍有强降水，局地有大暴雨并伴有雷暴大风或冰雹等强对流天气。23日，华南地区的降雨将明显减弱，但华南南部沿海部分地区仍有大到暴雨。另外，在25日前后，贵州、江南、华南等地还将有一次较强降水过程。 马学款提示，未来几天，我国南方地区强降水过程多、局地雨强大，并可能伴有风雹天气，公众需及时关注当地气象部门发布的预报预警信息，在强降水时段减少外出，避免在山涧、河道等低洼地带逗留，注意防雨防雷电，防范山洪、滑坡、泥石流等次生灾害风险。相关部门要注意城市低洼地带及时排水，加固户外设施，防范强风对临时搭建物、高空作业装置和人员、航运等的安全威胁。 江南东部和华南等地有强降水和强对流 未来三天，江南东部、华南中东部、台湾岛等地有大到暴雨，其中，广东中南部、台湾岛西北部等地部分地区有大暴雨，并伴有强对流天气。此外，华北北部、东北南部等地部分地区有中到大雨。
G | 预计，4月22日08时至23日08时，福建东南部、广东中东部和南部、广西东部等地部分地区有大到暴雨，其中，广东东南部的部分地区有大暴雨（100～160毫米）（见图1）；河北中南部、天津西南部、山东北部、河南北部、广西东南部及沿海、广东中南部及沿海等地的部分地区将有8-10级雷暴大风或冰雹天气，局地风力可达11级以上；福建东部和南部、贵州南部、广西、广东等地的部分地区将有短时强降水天气，最大小时雨量30-50毫米，局地可达70毫米以上（见图2）。中央气象台4月22日06时发布暴雨黄色预警和强对流天气蓝色预警。 （中国小康网综合央视新闻、央视网、中央气象台）。
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