Intelligent medicine最新文献

{"title":"Cross-sectional comparative evaluation of US and China-developed large language models for bilingual coronary heart disease patient education","authors":"Kaiyuan Liu ,&nbsp;Long Cheng ,&nbsp;Wanxin Wang ,&nbsp;Runda Wu,&nbsp;Chenguang Li,&nbsp;Kang Yao,&nbsp;Junbo Ge","doi":"10.1016/j.imed.2025.11.002","DOIUrl":"10.1016/j.imed.2025.11.002","url":null,"abstract":"<div><h3>Background</h3><div>Patient education for coronary heart disease (CHD) is increasingly facilitated by large language models (LLMs). However, it remains unclear whether the origin of the models (United States vs. China) affects their performance in providing CHD-related patient education. This study aimed to systematically compare six mainstream LLMs when responding to common CHD-related patient questions presented in English and Chinese.</div></div><div><h3>Methods</h3><div>Between 1 and 15 February 2025, we posed 30 clinician-validated CHD questions—extracted from outpatient records—to six LLMs: GPT-4o, OpenAI o1, Gemini 1.5 (United States); and DeepSeek-R1, ERNIE Bot 3.5, Doubao (China). Each prompt was asked in English and Chinese. Each prompt was asked in both English and Chinese. Three blinded cardiologists rated every answer for accuracy, comprehensiveness, understandability, and empathy on a 4-point Likert scale. Ratings were analyzed using cumulative-link mixed models (CLMMs) with a logit link function, including fixed effects for Model, Language, and Dimension, as well as their interactions and random intercepts for Question and Rater. Type III likelihood-ratio χ² tests assessed the main effects and interactions, followed by Holm-adjusted pairwise contrasts. Inter-rater agreement was quantified using Fleiss’ κ.</div></div><div><h3>Results</h3><div>Three cardiologists independently rated 360 bilingual responses with high inter-rater reliability (Fleiss' κ = 0.821). In CLMMs, there were significant main effects of Model and Dimension, as well as a Model × Language interaction and Model × Language × Dimension. OpenAI o1 achieved the highest odds of superior ratings versus GPT-4o (OR = 4.45, 95% CI: 3.01–6.57, <em>P</em> &lt; 0.001), followed by DeepSeek-R1 (OR = 1.32, 95% CI: 0.97–1.78, <em>P</em> = 0.038). Language-stratified contrasts showed that Chinese prompts increased comprehensiveness (OR = 1.48, 95% CI: 1.01–2.17, <em>P</em> = 0.045) and empathy (OR = 2.14, 95% CI: 1.47–3.11, <em>P</em> &lt; 0.001) but reduced understandability (OR = 0.64, 95% CI: 0.42–0.98, <em>P</em> = 0.042). Gemini 1.5 excelled in Chinese (OR = 3.55, 95% CI: 2.35–5.38, <em>P</em> &lt; 0.001), whereas DeepSeek-R1 favored English (OR = 0.64, 95% CI: 0.41–0.99, <em>P</em> = 0.046) and Doubao favored Chinese (OR = 1.64, 95% CI: 1.08–2.49, <em>P</em> = 0.020).</div></div><div><h3>Conclusions</h3><div>Model performance was strongly modulated by prompt language and evaluation dimension. Our benchmark offers practical guidance for clinicians, patients, and health-information providers choosing LLMs for bilingual patient education.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 132-138"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence-driven multi-cancer screening: Achievements, challenges, and future prospects","authors":"Yubei Huang ,&nbsp;Shuxue Lu ,&nbsp;Hongji Dai ,&nbsp;Wei Wang ,&nbsp;Ben Liu ,&nbsp;Maiheliyan Abudoumijiti ,&nbsp;Qianyun Jin ,&nbsp;Jie Wu ,&nbsp;Kexin Chen ,&nbsp;Yaogang Wang","doi":"10.1016/j.imed.2026.02.001","DOIUrl":"10.1016/j.imed.2026.02.001","url":null,"abstract":"<div><div>Malignant tumors pose a significant global health challenge. While established screening methods exist, they are largely site-specific, limiting comprehensive prevention. Multi-cancer screening, which detects multiple cancers simultaneously, offers substantial advantages including optimized sample utilization, reduced participant costs, enhanced efficiency, and improved resource allocation. Artificial intelligence (AI) has emerged as a transformative technology, revolutionizing healthcare by analyzing complex biomedical data and enhancing diagnostic accuracy. Integrating AI into multi-cancer screening holds immense potential for advancing early cancer detection. This review provides a comprehensive overview of AI-driven multi-cancer screening. We examine foundational technologies and current applications, including biomarker data and medical imaging data analysis, as well as core AI techniques like machine learning, deep learning, natural language processing, explainable AI and essential preprocessing steps. We assess key technical bottlenecks such as data sparsity, model generalizability, false positives and false negatives, and affordability, alongside solutions like transfer learning, federated learning, and Bayesian optimization. Additionally, we highlight clinical validation, regulatory approval, and ethical considerations for multi-cancer screening. Furthermore, we explore future prospects, envisioning enhanced accuracy and expanded coverage, deeper multi-modal data fusion, personalized and dynamic screening, and intelligent decision-support systems with improved accessibility. We also outline targeted recommendations for developing countries conducting AI-driven multi-cancer screening, building on global best practices while adapting to local realities including those in China. This review offers a forward-looking perspective on how AI will evolve multi-cancer screening into a more personalized, dynamic and accessible cornerstone of cancer prevention.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 200-211"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of telemedicine on chronic disease patients: An overview of systematic reviews","authors":"Kun Zhang ,&nbsp;Yanhua Chen ,&nbsp;Peicheng Wang ,&nbsp;Yanrong He ,&nbsp;Yanrong Du ,&nbsp;Hailun Liang ,&nbsp;Weiguo Zhu ,&nbsp;Xiao Long ,&nbsp;Leiyu Shi ,&nbsp;Jiming Zhu","doi":"10.1016/j.imed.2025.01.002","DOIUrl":"10.1016/j.imed.2025.01.002","url":null,"abstract":"<div><div>Telemedicine has gained prominence in managing chronic diseases, particularly post-COVID-19. However, interventions often lack consistent categorization based on patient engagement levels, and evidence of efficacy remains heterogeneous. This review synthesized findings from systematic reviews to evaluate the benefits and challenges of telemedicine for chronic disease management. A systematic search of the Medline, EMBASE, and Web of Science databases was conducted to identify systematic reviews with meta-analyses published between January 2022 and December 2024. The Triple Aim framework was used to assess the impact of telemedicine on clinical outcomes, patient experience, and healthcare costs. A framework for digital patient engagement levels was developed to explore the relationship between engagement levels and intervention effectiveness. A total of 81 systematic reviews met the inclusion criteria. Among these, 31% focused on cardiovascular diseases, 30% on diabetes, 28% on cancer, 4% on chronic lung diseases, and 7% on general chronic conditions. Intervention levels were categorized as consultation (9%), involvement (42%), partnership/shared leadership (13%), or unspecified (36%). Clinical outcomes were reported in 61 reviews, patient-reported outcomes in 23, and economic impacts in only 4 reviews, indicating substantial research gaps. Telemedicine enhances patient care experiences and population health, demonstrating substantial benefits in managing diabetes, cancer, cardiovascular, and chronic lung diseases. It holds considerable potential for reducing healthcare costs. However, further research is needed to evaluate the feasibility and effectiveness of telemedicine across different engagement levels. Furthermore, standardized methodologies and improved tools are essential to advance telemedicine research and implementation.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 226-233"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beyond multiple-choice questions: Rethinking evaluation frameworks for large language models for clinical medicine","authors":"Zehua Jiang ,&nbsp;Haichao Chen ,&nbsp;Yilan Wu ,&nbsp;Yiming Qin ,&nbsp;Chenyang Pei ,&nbsp;Dian Zeng ,&nbsp;Bin Sheng ,&nbsp;Tien Yin Wong","doi":"10.1016/j.imed.2026.01.001","DOIUrl":"10.1016/j.imed.2026.01.001","url":null,"abstract":"<div><div>Large language models (LLMs) have demonstrated encouraging performance for medical natural language processing (NLP) tasks, approaching human-equivalent performance in some of the standard benchmarks, positioning them as game-changers in healthcare. However, there remains a persistent gap between high benchmark performance and clinical utility of NLP algorithms due to limitations of existing evaluation paradigms. Existing benchmarks tend to use static, task-specific benchmarks, and as a result, they do not capture the full dimension of complexity, safety, interpretability, and integration in workflow required for the safe deployment in the clinic. The editorial advocates for a shift in evaluation paradigms from narrow score-based metrics to a dynamic, multi-dimensional, and patient-centered system of clinical gatekeeping. The proposed framework integrates a four-phase process, including retrospective benchmarking, pilot testing, multi-center validation, and real-world monitoring, alongside a capability-task-behavior-value progression and a continuous human-in-the-loop feedback mechanism. This comprehensive strategy ensures not only technical robustness but also clinical relevance, ethical accountability, and adaptive improvement, transforming LLMs from experimental tools into reliable clinical partners for safer and more patient-centric healthcare delivery.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 109-115"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147806780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic image processing platform for multi-class cell segmentation using deep learning","authors":"Yuzhou Wang ,&nbsp;Xiaojie Li ,&nbsp;Frank Kulwa ,&nbsp;Xiaoyan Li ,&nbsp;Shuochen Tai ,&nbsp;Shuaiyi Tian ,&nbsp;Kunyang Teng ,&nbsp;Marcin Grzegorzek ,&nbsp;Xinyu Huang ,&nbsp;Tao Jiang ,&nbsp;Chen Li","doi":"10.1016/j.imed.2025.08.002","DOIUrl":"10.1016/j.imed.2025.08.002","url":null,"abstract":"<div><div><strong>Background</strong> From lung cancer and heart disease to rare disorders, research on almost every disease is speeding up. Microscopic cell image analysis is an important area of medical research. As the first step in analysis, segmentation is a significant clinical concern. However, many complexities, such as variations in cell size or shape, overlapping regions, potential poor contrast, and background noise, make automated segmentation of microscopic images a complicated problem. Moreover, there is a notable deficiency in image processing systems that are both user-friendly and capable of delivering credible results.</div><div><strong>Methods</strong> This paper proposed a microscopic cell processing platform to enable efficient and accurate microscopic image analysis. First, the 2018 Data Science Bowl (DSB2018) dataset from the cell segmentation competition of Kaggle in 2018 is grouped into training, validation, and test sets. Then, U-Net++ incorporated with the watershed algorithm was used for microscopic cell image segmentation tasks. Third, a graphics user interface based on QT was designed to display the segmentation process, fine-tune the model according to clinical needs, and automatically generate diagnostic conclusions.</div><div><strong>Results</strong> The average of intersection over union, precision, recall, and F1-score achieved 0.846, 0.908, 0.925, and 0.917, respectively, which were highly satisfactory results, indicating the efficacy of this platform. Moreover, the mean error of the watershed algorithm achieved 0.113, a margin acceptable in clinical diagnostics. Compared with traditional methods, the proposed method significantly improved the performance.</div><div><strong>Conclusion</strong> With the efficient segmentation based on deep learning and accurate quantitative analysis for the results, this microscopic image processing platform may outperform many existing medical analysis systems and have applications in the field of auxiliary medical diagnosis.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 187-199"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hemodynamic-morphologic machine learning model improves rupture risk stratification of intradural internal carotid artery aneurysms: A retrospective multicenter study","authors":"Rong Zou ,&nbsp;Shijie Zhu ,&nbsp;Lifen Gan ,&nbsp;Zhiwen Lu ,&nbsp;Wei Lu ,&nbsp;Jing Cai ,&nbsp;Li Li ,&nbsp;Lili Jiang ,&nbsp;Jianping Xiang ,&nbsp;Qinghai Huang","doi":"10.1016/j.imed.2025.12.011","DOIUrl":"10.1016/j.imed.2025.12.011","url":null,"abstract":"<div><h3>Background</h3><div>The risk of rupture associated with intradural internal carotid artery (ICA) aneurysms warrants considerable attention. We aimed to develop the first machine learning (ML) model that integrates standardized hemodynamic profiling with clinical and morphological data to stratify rupture risk in intradural ICA aneurysms.</div></div><div><h3>Methods</h3><div>We consecutively enrolled 511 intradural ICA aneurysms that underwent DSA examinations at four hospitals from July 2017 to July 2022. Utilizing the electronic medical record system and computational fluid dynamics of AneuFlow software, we extracted 10 clinical baseline characteristics, 13 morphological, and 12 hemodynamic features for the aneurysms. Subsequently, the risk of aneurysm rupture was stratified by random forest (RF), XGBoost (XGB), LightGBM (LGB), and logistic regression (LR) models. Data from three hospitals were used to develop the internal training cohort (<em>n</em> = 331) and internal validation cohort (<em>n</em> = 83), while data from the fourth hospital contributed to the external validation cohort (<em>n</em> = 97). The models’ performance across the three cohorts was evaluated using area under the curve (AUC), sensitivity, specificity, and the Youden index. Additionally, we determined the feature importance ranking of the ML models.</div></div><div><h3>Results</h3><div>The RF model achieved the highest AUC of 0.980 (95% CI: 0.969–0.989) in the internal training cohort. The AUC for the RF, XGB, LGB, and LR models in the internal validation cohort was 0.872 (95% CI: 0.792–0.929), 0.874 (95% CI: 0.794–0.931), 0.852 (95% CI: 0.769–0.914), and 0.827 (95% CI: 0.740–0.894), respectively. In the external validation cohort, the AUC for these models was 0.820 (95% CI: 0.729–0.891), 0.772 (95% CI: 0.675–0.851), 0.782 (95% CI: 0.686–0.859), and 0.782 (95% CI: 0.686–0.859), respectively. Moreover, the RF model achieved the greatest Youden index (0.517) in the external validation cohort, indicating superior discrimination ability. Hemodynamics accounted for 57% of the stratification power, with irregular geometry (nonsphericity index &gt; 0.15) and microvascular inflammation markers (minimum wall shear stress &lt; 0.3 Pa) identified as the key drivers.</div></div><div><h3>Conclusion</h3><div>The ML framework designed for intradural ICA aneurysms demonstrated strong risk stratification capabilities, allowing more timely and personalized clinical diagnosis and treatment.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 139-145"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147806774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A retrospective validation of a federated machine learning framework (Hepa-FedBoost) for improving liver cancer computed tomography diagnosis across heterogeneous hospital networks","authors":"Chengquan Li ,&nbsp;Xiaobin Feng ,&nbsp;Dong Li ,&nbsp;Jiahong Dong","doi":"10.1016/j.imed.2025.08.003","DOIUrl":"10.1016/j.imed.2025.08.003","url":null,"abstract":"<div><h3>Background</h3><div>The development of accurate artificial intelligence (AI) models for liver cancer diagnosis using contrast-enhanced computed tomography (CT) is often hindered by patient privacy regulations and considerable data variations between hospitals. These variations—in CT scanners, patient populations, and disease prevalence—can reduce the performance of standard collaborative training methods such as federated learning (FL). This retrospective study evaluated whether a novel machine learning framework, Hepa-FedBoost, can overcome these challenges to improve diagnostic accuracy for liver cancer classification across a simulated multi-center network without sharing raw patient images.</div></div><div><h3>Methods</h3><div>We developed a new benchmark dataset to better represent real-world clinical diversity. This was done by merging 23,583 CT images of 11 abdominal organs from the public OrganCMNIST subset of the MedMNIST v2 dataset with 11,000 liver lesion images from 500 patients with histopathology-confirmed liver cancer. These cancer-related data were obtained retrospectively from the National Hepatobiliary Standard Database of China (initiated by Beijing Tsinghua Changgung Hospital, with data collected since December 2019). The use of data from the public and private sources did not require authorization from the patients or owners. This combined dataset of 34,583 images was used to simulate a network of 12 hospitals with significant imbalances in data quantity and class labels. The Hepa-FedBoost framework, a type of clustered FL model, was trained on this network. The model works by having each simulated hospital share only compact, anonymized data summaries (prototypes) instead of model parameters or raw data. A central server uses these summaries to group hospitals with similar data and guide the training process to improve overall accuracy. The primary endpoint was the macro area under the receiver operating characteristic curve (mAUC). Furthermore, we compared Hepa-FedBoost’s performance against 6 other established FL methods.</div></div><div><h3>Results</h3><div>On the simulated hospital network, Hepa-FedBoost demonstrated superior diagnostic performance, improving the liver cancer classification mAUC by 4.9 absolute points and overall accuracy by 2.4 absolute points compared with the next best method. It reached a threshold of clinical-grade accuracy in just 17 training rounds, 43% faster than the standard FedAvg approach, while reducing the total data transmission required by approximately half (to 800 MB).</div></div><div><h3>Conclusion</h3><div>The Hepa-FedBoost framework markedly improved the accuracy and efficiency of multi-center liver cancer classification on CT images. By enabling robust collaborative model training while maintaining patient privacy and minimizing IT resource requirements, it represents a practicable AI solution for real-world hospital networks.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 166-174"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147806778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guide for Authors","authors":"","doi":"10.1016/S2667-1026(26)00038-0","DOIUrl":"10.1016/S2667-1026(26)00038-0","url":null,"abstract":"","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 234-240"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From radiology findings to artificial intelligence-powered impressions: A retrospective study on the comparative performance of recent large language models","authors":"Nanziba Tasneem ,&nbsp;Christian B. van der Pol ,&nbsp;Ambreen Zahoor ,&nbsp;Nitin Juggath ,&nbsp;Kyle McGowan ,&nbsp;Cynthia Lokker ,&nbsp;Ashirbani Saha","doi":"10.1016/j.imed.2025.11.003","DOIUrl":"10.1016/j.imed.2025.11.003","url":null,"abstract":"<div><h3>Background</h3><div>Large language models (LLMs), a revolutionary breakthrough in artificial intelligence, can be leveraged to automatically generate impressions for radiology reports, which usually require time, effort, and training. Our objective was to evaluate the performance of five recent LLMs (GPT–4, GPT–4o mini, Gemini 1.5–Pro, Gemini 1.5–Flash, and Llama 3.1) for impression generation.</div></div><div><h3>Methods</h3><div>In this retrospective study, 100 radiology reports were sampled (20 from each of the report-groups 0–400, 400–800, 800–1,200, 1,200–2,000, and 2,000–8,000 based on character count of the Findings section) from the publicly available “BioNLP 2023 report summarization” dataset (collected between 2001–2016, training subset of size 59,320 considered for sampling), sourced from PhysioNet. Then, each of the five LLMs was zero-shot prompted to generate impressions using the findings from the sample. Generated impressions were evaluated: (a) subjectively for coherence, comprehensiveness, conciseness, and medical harmfulness by two radiology fellows and a large reasoning model (LRM) Gemini 2.5–Pro, and (b) objectively using a composite accuracy metric including recall-oriented understudy for gisting evaluation (ROUGE)-1, bilingual evaluation understudy (BLEU) and cosine similarity, against the original human expert-generated impressions. The LLMs were ranked according to the percentage agreement ranking of subjective and composite scores. Statistical tests ( Friedman and post-hoc Nemenyi tests) were used to assess inter-model differences.</div></div><div><h3>Results</h3><div>The top-ranked models were Gemini 1.5–Pro, GPT–4, and Gemini 1.5–Flash. Performance varied across models for both human and LRM raters (Friedman test: Human <em>P</em> &lt;1.82×10⁻⁶; LRM <em>P</em> &lt;9.10×10⁻⁴⁰). Composite accuracy scores were significantly higher for the top three models (0.69, 0.68, and 0.68) versus others (0.65; Nemenyi <em>P</em> &lt;1.11×10⁻¹⁶). The LRM aligned closely with human raters (2.15% complete disagreement) and identified all human-rated inaccurate impressions.</div></div><div><h3>Conclusion</h3><div>Gemini 1.5–Pro outperformed GPT–4, in terms of coherence, comprehensiveness, and medical harmfulness, at a lower cost. Human and LRM evaluations were generally consistent, though the LRM was more conservative.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 154-165"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147806775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence-based retinal vascular fractal dimension quantification and related factors: A retrospective study","authors":"Chuan Zhang ,&nbsp;Haotian Wu ,&nbsp;Saiguang Ling ,&nbsp;Zhou Dong ,&nbsp;Li Dong ,&nbsp;Ruiheng Zhang ,&nbsp;Wenbin Wei ,&nbsp;Lei Shao","doi":"10.1016/j.imed.2025.12.002","DOIUrl":"10.1016/j.imed.2025.12.002","url":null,"abstract":"<div><h3>Background</h3><div>Fractal dimension (D_f) quantifies vascular network complexity and spatial filling density, providing a non-invasive biomarker for microvascular pathology assessment. We aimed to establish an artificial intelligence (AI)–powered framework for automated D_f quantification and investigate its clinical implications in a general population of the Beijing Eye Study.</div></div><div><h3>Methods</h3><div>This retrospective study utilized data from the Beijing Eye Study 2011. Fundus images meeting quality criteria were processed with an AI algorithm to segment retinal vasculature and calculate D_f. Multiple linear and logistic regression models were used to assess the associations of retinal vascular D_f with systemic and ocular parameters.</div></div><div><h3>Results</h3><div>AI-based quantification of retinal vascular D_f was successfully performed in 3,298 participants (95.1% of 3,468 participants), demonstrating high model performance: segmentation accuracy (0.9660), sensitivity (0.8879), specificity (0.9743), and intersection-over-union (IoU) (0.7110). The mean D_f was 1.51 ± 0.09 (median: 1.53; interquartile range: 1.50–1.55). In multiple linear regression analysis, reduced D_f was significantly associated with older age (standardized regression coefficient (sβ) = −2.346; <em>P</em> &lt; 0.001), higher systolic blood pressure (sβ = −0.341; <em>P</em> &lt; 0.001), smaller hip circumference (sβ = 0.518; <em>P</em> = 0.014), lower equivalent diopter (sβ = 3.589; <em>P</em> &lt; 0.001), thinner retinal nerve fiber layer thickness (sβ = 0.390; <em>P</em> = 0.002), smaller arteriovenous ratio (sβ = 524.590; <em>P</em> &lt; 0.001), and thinner subfoveal choroidal thickness (sβ = 0.071; <em>P</em> &lt; 0.001). In the logistic regression model, the risk prevalence of hypertension increased with the decrease in D_f (OR = 0.853, 95% CI: 0.651–0.801).</div></div><div><h3>Conclusion</h3><div>AI-powered D_f analysis may be used as a novel quantitative platform for characterizing retinal microvascular morphological alterations.</div></div>","PeriodicalId":73400,"journal":{"name":"Intelligent medicine","volume":"6 2","pages":"Pages 146-153"},"PeriodicalIF":6.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}