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Will Ketamine Change Sedation Practices for Procedural Sedation? 氯胺酮会改变程序性镇静的镇静实践吗?
IF 17.6 1区 医学
Radiology Pub Date : 2026-09-01 DOI: 10.1148/radiol.262157
Roya Saffary
{"title":"Will Ketamine Change Sedation Practices for Procedural Sedation?","authors":"Roya Saffary","doi":"10.1148/radiol.262157","DOIUrl":"https://doi.org/10.1148/radiol.262157","url":null,"abstract":"","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 3","pages":"e262157"},"PeriodicalIF":17.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149075836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Comparison of Virtual and True Noncontrast Lung Images in Photon-counting CT: Global and Regional Attenuation Assessment. 光子计数CT虚实无对比肺图像的定量比较:全局和区域衰减评估。
IF 17.6 1区 医学
Radiology Pub Date : 2026-09-01 DOI: 10.1148/radiol.253972
Max L Bodlien, Sarah C Scharm, Anna M Hunkemöller, Anton Schreuder, Cornelia Schaefer-Prokop, Frank K Wacker, Hoen-Oh Shin
{"title":"Quantitative Comparison of Virtual and True Noncontrast Lung Images in Photon-counting CT: Global and Regional Attenuation Assessment.","authors":"Max L Bodlien, Sarah C Scharm, Anna M Hunkemöller, Anton Schreuder, Cornelia Schaefer-Prokop, Frank K Wacker, Hoen-Oh Shin","doi":"10.1148/radiol.253972","DOIUrl":"10.1148/radiol.253972","url":null,"abstract":"<p><p>Background Use of virtual noncontrast (VNC) images from photon-counting CT (PCCT) may reduce radiation dose and support quantitative lung analysis by obviating the need for separate true noncontrast (TNC) acquisitions. Their accuracy for lung densitometry, however, has not been systematically assessed. Purpose To evaluate agreement between VNC and TNC images for global and regional lung attenuation measurements in thoracic PCCT. Materials and Methods This retrospective study included patients who underwent same-day unenhanced and contrast-enhanced thoracic PCCT between November 2021 and January 2024. VNC datasets were reconstructed from contrast-enhanced scans. Lung volume, mass, and attenuation were compared using paired <i>t</i> tests, Wilcoxon signed-rank tests, and Bland-Altman analysis. Inspiratory depth effects were assessed with linear regression. Density class distributions were compared, and voxel-wise attenuation differences were evaluated in a subset of patients after nonlinear registration. Results This study included 83 patients (mean age, 60.0 years ± 15.0 [SD]; 47 men). Mean lung volume (4143 mL ± 1375 vs 4111 mL ± 1384; <i>P</i> = .41) and mean attenuation (-799 HU ± 56 vs -798 HU ± 56; <i>P</i> = .91) were similar between VNC and TNC images. After adjustment for inspiratory depth, VNC and TNC images demonstrated no systematic bias, and attenuation differences demonstrated substantially lower variability after adjustment than before adjustment (mean difference, -1.1 HU ± 5.9 vs -0.8 HU ± 19.5), with corresponding 95% limits of agreement of -12.6 to 10.5 HU and -39.1 to 37.5 HU, respectively. Density class analysis demonstrated that emphysematous areas were slightly underestimated (median, -0.4% [IQR, -1.4% to 0.1%]; <i>P</i> < .001) and normal-attenuation lung areas were modestly overestimated (median, +0.8% [IQR, -1.3% to 1.7%]; <i>P</i> < .001) on VNC images, without relevant changes in higher-density classes (both <i>P</i> ≥ .71). Voxel-wise differences were minimal within parenchyma (mean, 0.6 HU ± 15.1; <i>P</i> = .76) but more pronounced at anatomic interfaces. Conclusion In patients who underwent thoracic PCCT, VNC images demonstrated agreement with TNC scans for lung volume and attenuation, and inspiratory depth, rather than reconstruction method, was the dominant source of attenuation variability. © RSNA, 2026 <i>Supplemental material is available for this article.</i></p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 3","pages":"e253972"},"PeriodicalIF":17.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149075773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of Diagnostic Performance of Node-RADS and ESGAR Criteria in Rectal Cancer Nodal Assessment at MRI. 淋巴结- rads与ESGAR标准在直肠癌淋巴结MRI诊断中的比较。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.253676
Qing-Yang Li, Yu-Zhuo Guo, Jia-Qi Wu, Tian-Jing Chang, Zheng Wang, Xiao-Ting Li, Rui-Jia Sun, Qiao-Yuan Lu, Zhen Guan, Xin-Yue Yan, Xiao-Yan Zhang, Ying-Shi Sun
{"title":"Comparison of Diagnostic Performance of Node-RADS and ESGAR Criteria in Rectal Cancer Nodal Assessment at MRI.","authors":"Qing-Yang Li, Yu-Zhuo Guo, Jia-Qi Wu, Tian-Jing Chang, Zheng Wang, Xiao-Ting Li, Rui-Jia Sun, Qiao-Yuan Lu, Zhen Guan, Xin-Yue Yan, Xiao-Yan Zhang, Ying-Shi Sun","doi":"10.1148/radiol.253676","DOIUrl":"https://doi.org/10.1148/radiol.253676","url":null,"abstract":"<p><p>Background Suboptimal nodal assessment in rectal cancer hampers pre- and postoperative assessment for treatment planning. A recently proposed standardized nodal evaluation system, Node Reporting and Data System 1.0 (Node-RADS), lacks robust evidence of diagnostic utility. Purpose To validate and optimize Node-RADS against European Society of Gastrointestinal and Abdominal Radiology (ESGAR) criteria in MRI-based nodal assessment in patients with rectal cancer, with subsequent patient-level external validation. Materials and Methods This retrospective study included consecutive patients with rectal cancer who underwent MRI and radical surgery between January 2016 and July 2025. Node-level analyses were performed in patients from center 1, and external patient-level validation was performed in patients from centers 2 and 3. Two radiologists independently evaluated mesorectal nodes according to Node-RADS and ESGAR criteria. The optimal threshold of the Node-RADS score for diagnosing malignancy was determined using the Youden index. Diagnostic performance and interobserver agreement were assessed using area under the receiver operating characteristic curve (AUC) and Cohen κ, respectively. Results This study included 780 patients (median age, 61 years [IQR, 53-68 years]; 477 men). Among 251 patients (1302 nodes) who underwent direct surgery, the optimal threshold of Node-RADS score was 3 or higher (Youden index, 0.65), enabling simplification to a modified model, the Simplified Nodal Assessment Process in Rectal Cancer (recSNAP). recSNAP outperformed the ESGAR criteria at both the node level (AUC, 0.83 vs 0.71; <i>P</i> < .001) and the patient level (AUC, 0.83 vs 0.71; <i>P</i> < .001). Similarly, among 284 patients (918 nodes) who received neoadjuvant chemoradiotherapy before surgery, Node-RADS with a threshold of 4 or higher outperformed the ESGAR criteria (AUC, 0.72 vs 0.66; <i>P</i> < .001). Interobserver agreement for Node-RADS at pre- and posttreatment MRI was substantial (Cohen κ, 0.76 and 0.64, respectively). Conclusion Node-RADS outperformed the ESGAR criteria for MRI-based rectal adenocarcinoma nodal assessment at both the node and patient levels and in external validation, and a simplified version of Node-RADS exhibited similar diagnostic performance. © RSNA, 2026 <i>Supplemental material is available for this article.</i></p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e253676"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148707661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radiologically Relevant Clinical History Summarization with Large Language Models: A Multireader Performance Study. 用大语言模型总结放射学相关的临床病史:一项多读卡器性能研究。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.253238
Adrian Serapio, Timothy L Chen, Brian Tangsombatvisit, Brandon K K Fields, Yannan Yu, Yue Guo, Soo Kyung Kim, Brenda Y Miao, Madhumita Sushil, Christopher P Hess, Sharmila Majumdar, Jae Ho Sohn
{"title":"Radiologically Relevant Clinical History Summarization with Large Language Models: A Multireader Performance Study.","authors":"Adrian Serapio, Timothy L Chen, Brian Tangsombatvisit, Brandon K K Fields, Yannan Yu, Yue Guo, Soo Kyung Kim, Brenda Y Miao, Madhumita Sushil, Christopher P Hess, Sharmila Majumdar, Jae Ho Sohn","doi":"10.1148/radiol.253238","DOIUrl":"https://doi.org/10.1148/radiol.253238","url":null,"abstract":"<p><p>Background Clinical histories accompanying imaging orders guide protocol selection and diagnostic focus. However, they are often incomplete, potentially compromising diagnostic accuracy and workflow efficiency. Purpose To evaluate whether large language models (LLMs) can improve the clinical utility of provided imaging indications by leveraging clinical notes. Materials and Methods This retrospective study curated a dataset from deidentified electronic health records at the University of California San Francisco (January 2012 to August 2024), consisting of radiology reports with paired referring clinician-provided and radiologist-curated indications linked to clinical notes. The dataset was stratified across five body systems and five pathophysiologic categories to derive LLM selection and reader study internal test sets. For the reader study, 20 radiologists with 2-25 years of experience compared indications from the referring clinician, radiologist, and best-performing LLMs. Readers scored comprehensiveness, factuality, and conciseness and ranked indications for usefulness in protocoling, usefulness in interpretation, and overall ranking. Models and clinicians were compared using cumulative link mixed models with Tukey-adjusted post hoc comparisons. Results From 28 313 patients (mean age, 59 years ± 20.6 [SD]; 14 912 women), 250 examinations from 247 patients were sampled for the reader study. After nine exclusions, 241 examinations were analyzed, yielding 482 reader-examination evaluations. Indications from the best-performing proprietary (Claude 3.5 Sonnet; Anthropic) and open-source (Qwen 2.5-7B Instruct; Alibaba) LLM were rated as more comprehensive (Likert rating of 5: 37.14% and 28.42%, respectively; both <i>P</i> < .001) and factual (68.05% and 59.75%; both <i>P</i> < .001) than referring clinician indications. The proprietary LLM ranked most useful in protocoling (rank 1: 40.87%; all <i>P</i> < .001), useful in interpretation (44.61%; all <i>P</i> < .001), and overall ranking (44.19%, all <i>P</i> < .001). Comprehensiveness (65.77% of ratings; both <i>P</i> < .001) most strongly influenced overall rankings. Conclusion LLMs generated radiology-relevant indications from clinical notes that were more comprehensive and factual than clinician indications, and when generated by the proprietary LLM, were ranked most useful in protocoling and imaging interpretation. © RSNA, 2026 <i>Supplemental material is available for this article.</i> See also the editorial by Yilmaz and Cardoza-Ochoa in this issue.</p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e253238"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148670590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contrast-enhanced CT Radiomics for High-Grade Pattern Identification and Prognostic Stratification in Lung Adenocarcinoma with Consolidation-to-Tumor Ratio of 25% or More. 对比增强CT放射组学对巩固-肿瘤比大于或等于25%的肺腺癌进行高级别模式识别和预后分层。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.260264
Jiahui E, Liuqing Kang, Fan Liu, Dianzhe Wang, Jingyi Yang, Xiaoyan Lu, Yong Huang, Jing Li, Yicai Zhang, Qiliang Wang, Xiaoting Cai, Bole Gao, Zhuo Ning, Ying Liu
{"title":"Contrast-enhanced CT Radiomics for High-Grade Pattern Identification and Prognostic Stratification in Lung Adenocarcinoma with Consolidation-to-Tumor Ratio of 25% or More.","authors":"Jiahui E, Liuqing Kang, Fan Liu, Dianzhe Wang, Jingyi Yang, Xiaoyan Lu, Yong Huang, Jing Li, Yicai Zhang, Qiliang Wang, Xiaoting Cai, Bole Gao, Zhuo Ning, Ying Liu","doi":"10.1148/radiol.260264","DOIUrl":"10.1148/radiol.260264","url":null,"abstract":"<p><p>Background Radiomics may preoperatively identify high-grade patterns (HGPs) in lung adenocarcinoma (ADC) and assist in clinical decision-making. Purpose To develop and evaluate a machine learning model based on preoperative contrast-enhanced CT images to predict HGPs and explore the model's prognostic value. Materials and Methods Patients with clinical stage I invasive ADC who underwent surgery (January 2017 to May 2025) were retrospectively enrolled from three centers. Binary (low risk: HGPs < 20%; high risk: HGPs ≥ 20%) and ternary (HGP0: HGPs = 0; HGP1: 0 < HGPs < 20%; HGP2: HGPs ≥ 20%) classification analyses were performed based on the proportion of HGPs. Multivariable logistic regression analysis was used to determine independent predictors of HGPs. XGBoost classifier-based radiomic models and combined models (radiomics-predicted probabilities plus clinical variables plus CT semantic features) were constructed and evaluated for discriminability, calibration ability, and clinical utility. Kaplan-Meier and Cox regression analyses were conducted to identify prognostic factors for overall survival (OS) and recurrence-free survival (RFS). Results A total of 1181 patients (median age, 61 years [IQR, 54-66 years]; 694 female) were allocated to the training (<i>n</i> = 667), internal test (<i>n</i> = 279), and external test (<i>n</i> = 235) sets. The combined model achieved the best discrimination in both binary (training: area under the receiver operating characteristic curve [AUC], 0.87 [95% CI: 0.84, 0.90]; internal test: AUC, 0.80 [95% CI: 0.74, 0.85]; external test: AUC, 0.84 [95% CI: 0.78, 0.90]) and ternary (training: microaverage AUC, 0.80 [95% CI: 0.78, 0.82]; internal test: microaverage AUC, 0.74 [95% CI: 0.70, 0.77]; external test: microaverage AUC, 0.72 [95% CI: 0.68, 0.76]) classification analyses. Model-predicted high-risk group was an independent prognostic factor for both OS (binary: hazard ratio [HR] = 1.98, <i>P</i> =.04; ternary: HR = 2.93, <i>P</i> =.03) and RFS (binary: HR = 3.33, <i>P</i> < .001; ternary: HR = 5.10, <i>P</i> < .001) and was consistently confirmed across subgroup analyses. Conclusion The combined model, integrating clinical variables, CT semantic features, and radiomics-predicted probabilities, effectively predicted high-grade patterns in lung ADC and showed strong potential for prognostic risk stratification. © RSNA, 2026 <i>Supplemental material is available for this article.</i> See also the editorial by Arita and Kocak in this issue.</p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e260264"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148707585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determinants of Reader-LLM Interaction in Thoracic Radiology: Impact of Model Confidence and Reader Expertise. 胸椎放射学中读者-法学硕士互动的决定因素:模型置信度和读者专业知识的影响。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.253397
Jiyoung Song, Won Gi Jeong, Dae Hee Han, Hongseok Ko, Soon Ho Yoon, Hyungjin Kim, Phakhanith Naruetook, Wai Ling Leong, Soojin Kim, Hee Eun Moon, Ji Yeong An, So Jung Koo, Meesun Lee, Eui Jin Hwang, Taehee Lee
{"title":"Determinants of Reader-LLM Interaction in Thoracic Radiology: Impact of Model Confidence and Reader Expertise.","authors":"Jiyoung Song, Won Gi Jeong, Dae Hee Han, Hongseok Ko, Soon Ho Yoon, Hyungjin Kim, Phakhanith Naruetook, Wai Ling Leong, Soojin Kim, Hee Eun Moon, Ji Yeong An, So Jung Koo, Meesun Lee, Eui Jin Hwang, Taehee Lee","doi":"10.1148/radiol.253397","DOIUrl":"10.1148/radiol.253397","url":null,"abstract":"<p><p>Background Large language models (LLMs) provide diagnostic suggestions and rationales, but determinants of successful reader-LLM interaction remain unclear. Purpose To determine how LLM attributes and reader expertise independently and jointly influence the selective integration of diagnostic advice in human-LLM collaboration. Materials and Methods In this retrospective study, 10 readers evaluated 100 chest imaging cases (radiography, CT, MRI, or PET) from the Korean Society of Thoracic Radiology Weekly Case platform (January 2018 to December 2020), unaided (session 1) and randomized to LLM-assisted setups (session 2) at the reader-case level: high accuracy (76% [379 of 500 reader-case pairs]) using OpenAI's GPT-5 or low accuracy (27% [133 of 500]) using OpenAI's GPT-4o (August 2025), providing ranked diagnostic options with rationales against a reference standard established by the case author. The primary outcome was adequate interaction (accepting correct or rejecting incorrect suggestions). Data were analyzed using multivariable generalized estimating equations, adjusted for reader expertise, diagnostic correctness and reader confidence (session 1), model confidence (score assigned to the correct diagnosis), and reference panel-assessed rationale quality. Results A total of 100 patients were included (mean age, 50.0 years ± 16.3 [SD]; 59 male). After multivariable adjustment, model confidence (odds ratio [OR], 3.82 [95% CI: 1.58, 9.25]; <i>P</i> = .003) and reader expertise (OR, 2.06 [95% CI: 1.38, 3.07]; <i>P</i> < .001) were independently associated with adequate interaction, with a weaker effect of confidence among experts (OR, 0.79 [95% CI: 0.67, 0.94]; <i>P</i> = .008). Higher rationale quality reduced rejection of correct suggestions (OR, 0.79 [95% CI: 0.67, 0.93]; <i>P</i> = .005) but increased acceptance of incorrect suggestions (OR, 1.71 [95% CI: 1.47, 1.99]; <i>P</i> < .001). Higher reader expertise (OR, 0.54 [95% CI: 0.41, 0.70]; <i>P</i> < .001) and reader confidence (OR, 0.80 [95% CI: 0.67, 0.94]; <i>P</i> = .007) were protective, reducing acceptance of incorrect suggestions. Conclusion Successful reader-LLM collaboration is associated with model confidence and reader expertise, with rationale quality facilitating correct advice uptake but increasing overreliance on incorrect suggestions. © RSNA, 2026 <i>Supplemental material is available for this article.</i></p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e253397"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148707675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
"Targeted" Imaging: The Inevitable Fate of Cancer Therapy. “靶向”成像:癌症治疗的必然命运。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.262021
Egesta Lopci
{"title":"\"Targeted\" Imaging: The Inevitable Fate of Cancer Therapy.","authors":"Egesta Lopci","doi":"10.1148/radiol.262021","DOIUrl":"https://doi.org/10.1148/radiol.262021","url":null,"abstract":"","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e262021"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148797492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnostic Value of Elastography, Microvascularity, and Classic US Findings in Evaluating Soft Tissue Tumors. 弹性成像、微血管和经典超声检查对软组织肿瘤的诊断价值。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.262155
Kenneth S Lee, Zachary E Stewart
{"title":"Diagnostic Value of Elastography, Microvascularity, and Classic US Findings in Evaluating Soft Tissue Tumors.","authors":"Kenneth S Lee, Zachary E Stewart","doi":"10.1148/radiol.262155","DOIUrl":"https://doi.org/10.1148/radiol.262155","url":null,"abstract":"","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e262155"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148813964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Vascular Perspective on Osteoarthritis Progression. 骨关节炎进展的血管视角。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.261915
Mohamed Jarraya, Hamid Harandi
{"title":"A Vascular Perspective on Osteoarthritis Progression.","authors":"Mohamed Jarraya, Hamid Harandi","doi":"10.1148/radiol.261915","DOIUrl":"https://doi.org/10.1148/radiol.261915","url":null,"abstract":"","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e261915"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148670410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photon-counting CT Extracellular Volume Fraction for Liver Fibrosis Assessment: Validation against MR Elastography and Histopathology. 肝纤维化评估的光子计数CT细胞外体积分数:MR弹性成像和组织病理学验证。
IF 17.6 1区 医学
Radiology Pub Date : 2026-08-01 DOI: 10.1148/radiol.253979
Xinyu Wu, Jinzhe Li, Rong Deng, Xinxin Xu, Jiahao Zhou, Huanhuan Chong, Weixia Li, Peng Wu, Yongjun Chen, Yuchen Yang, Rui Chang, Haipeng Dong, Ruokun Li, Ingolf Sack, Jing Guo, Zhihan Xu, Bernhard Schmidt, Amir A Borhani, Fuhua Yan, Huimin Lin
{"title":"Photon-counting CT Extracellular Volume Fraction for Liver Fibrosis Assessment: Validation against MR Elastography and Histopathology.","authors":"Xinyu Wu, Jinzhe Li, Rong Deng, Xinxin Xu, Jiahao Zhou, Huanhuan Chong, Weixia Li, Peng Wu, Yongjun Chen, Yuchen Yang, Rui Chang, Haipeng Dong, Ruokun Li, Ingolf Sack, Jing Guo, Zhihan Xu, Bernhard Schmidt, Amir A Borhani, Fuhua Yan, Huimin Lin","doi":"10.1148/radiol.253979","DOIUrl":"https://doi.org/10.1148/radiol.253979","url":null,"abstract":"<p><p>Background Photon-counting CT (PCCT) can theoretically be used to quantify extracellular volume fraction (ECV) for liver fibrosis assessment, but its performance remains unclear. Purpose To determine the feasibility of PCCT-derived ECV for staging liver fibrosis by assessing its correlation with MR elastography-derived liver stiffness measurement (LSM) and comparing their diagnostic performance, using histopathologic findings as the reference standard. Materials and Methods Between July 2024 and July 2025, 157 participants with suspected hepatic malignancies were prospectively enrolled and underwent PCCT and MRI at Ruijin Hospital. Intraparticipant comparisons of ECV and LSM were performed, and their diagnostic performance in staging liver fibrosis was evaluated using histopathologic findings as the reference standard. Subgroup analyses of fibrosis staging using ECV were performed among participants with coexisting steatosis or inflammation and participants with a body mass index of 25 or higher. Correlation, receiver operating characteristic, and equivalence analyses were performed. Results Ultimately, 139 participants (mean age, 62 years ± 8 [SD]; 114 male) were included. ECV was strongly correlated with LSM (Spearman ρ = 0.84; <i>P</i> < .001) in an intraparticipant-level comparison. When histopathologic examination was used as the reference standard, the area under the receiver operating characteristic curve (AUC) values for ECV were 0.99 (95% CI: 0.98, 1.00), 0.98 (95% CI: 0.96, 1.00), and 0.98 (95% CI: 0.96, 1.00) for participants with fibrosis stages F2 or higher, F3 or higher, and F4, respectively. Equivalence analysis revealed comparable diagnostic performance between ECV and LSM (95% CI differences in AUCs: 0.005, 0.055 for stage F2 or higher; -0.015, 0.027 for stage F3 or higher; and -0.021, 0.012 for stage F4). With use of the cutoffs derived from the whole-group analysis, ECV showed excellent agreement with histopathologic stage overall and across each subgroup (all weighted κ coefficients ≥0.86; <i>P</i> < .001 for all). Conclusion PCCT-derived ECV was strongly correlated with MR elastography-derived LSM and showed equivalent, clinically feasible performance for liver fibrosis staging. © RSNA, 2026 <i>Supplemental material is available for this article.</i> See also the editorial by Wu and Shi in this issue.</p>","PeriodicalId":20896,"journal":{"name":"Radiology","volume":"320 2","pages":"e253979"},"PeriodicalIF":17.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148670458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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