Emergency Radiology最新文献

Comparative evaluation of ultrasound and computed tomography in the detection of imaging findings and complications of acute cholecystitis: a retrospective cohort study. 超声和计算机断层扫描在检测急性胆囊炎的影像学表现和并发症中的比较评价：一项回顾性队列研究。

IF 1.3

Emergency Radiology Pub Date : 2026-05-08 DOI: 10.1007/s10140-026-02487-x

Ahmad Mahamid, Abdel-Rauf Zeina, Rawi Hazzan, Randa Taher Natour, Dorin Nicola, Oren Gal, Fadi Abu Baker

{"title":"Comparative evaluation of ultrasound and computed tomography in the detection of imaging findings and complications of acute cholecystitis: a retrospective cohort study.","authors":"Ahmad Mahamid, Abdel-Rauf Zeina, Rawi Hazzan, Randa Taher Natour, Dorin Nicola, Oren Gal, Fadi Abu Baker","doi":"10.1007/s10140-026-02487-x","DOIUrl":"https://doi.org/10.1007/s10140-026-02487-x","url":null,"abstract":"Background: Gallstones (cholelithiasis) are common, with a significant portion of affected individuals developing acute cholecystitis, which can lead to severe complications. While ultrasound (US) is typically the first imaging method used, multidetector computed tomography (MDCT) may be better at detecting more complex scenarios. This study aimed to compare the detection of imaging features and complications of acute cholecystitis between US and MDCT in a cohort of confirmed cases, and to evaluate their complementary roles in clinical practice.Methods: A retrospective study was conducted including 134 adults with clinically suspected acute cholecystitis who underwent same-day US and MDCT, with subsequent confirmation by pathology or intervention. Two radiologists independently reviewed all imaging studies, and the detection of imaging features and complications was compared.Results: US showed significantly higher detection rates than MDCT for gallbladder wall thickening (98.5% vs. 66.4%, P < 0.001), sludge (35.1% vs. 14.9%, P < 0.001), and pericholecystic fluid (75.4% vs. 47.8%, P < 0.001). Conversely, MDCT more frequently identified complications such as choledocholithiasis (8.2% vs. 2.2% by US, P = 0.041) and liver abscesses (6.7% vs. 1.5% by US, P = 0.035). MDCT also identified findings consistent with cholecystitis in 7 patients (5.2%) not detected by US and was associated with a change in management of 20 patients (14.9%).Conclusions: US remains effective as a first-line modality for detecting acute cholecystitis, while MDCT offers additional value in identifying complications and influencing management. Together, these findings support a complementary, rather than substitutive, role for the two modalities.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147835117","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}

引用次数: 0

Comparative analysis of occult and overt rib fractures after blunt thoracic trauma using initial and follow-up computed tomography. 钝性胸外伤后隐蔽性和显性肋骨骨折的初始和随访计算机断层扫描比较分析。

IF 1.3

Emergency Radiology Pub Date : 2026-05-04 DOI: 10.1007/s10140-026-02486-y

Mohamadreza Zeinadini Maymand, Hossein Abdolrahimzadeh Fard, Shahriar Sadeghi, Reza Gerami, Shiva Moradi, Mohsen Zahedinia

{"title":"Comparative analysis of occult and overt rib fractures after blunt thoracic trauma using initial and follow-up computed tomography.","authors":"Mohamadreza Zeinadini Maymand, Hossein Abdolrahimzadeh Fard, Shahriar Sadeghi, Reza Gerami, Shiva Moradi, Mohsen Zahedinia","doi":"10.1007/s10140-026-02486-y","DOIUrl":"https://doi.org/10.1007/s10140-026-02486-y","url":null,"abstract":"Background: The accurate diagnosis of rib fractures is clinically important because these injuries are associated with complications. Despite its advantages, computed tomography is not infallible, and rib fractures may remain undetected on initial examinations.Objective: This study aims to perform a CT-based comparative analysis of occult and overt rib fractures.Methods: This longitudinal observational study included hospitalized patients presenting with blunt chest trauma. The patients were classified as having either overt rib fractures or occult rib fractures. Demographic and clinical data, including age, sex, and trauma severity, were retrospectively extracted from medical records. All CT examinations were performed using a standardized protocol and independently reviewed by two experienced radiologists.Results: A total of 313 patients with a median age of 34.00 years, comprising of 62.3% males were included. Overall injury severity was high, with 82.7% of patients presenting with moderate to severe thoracic injury. Occult fractures were more frequently located in the posterior rib arc and demonstrated higher CT attenuation values. The prevalence of pleural thickening and pulmonary contusion was similar between groups, whereas associated thoracic skeletal injuries were more common in the overt group. Cortical irregularity (87.8%) and non-sharp angulation (70.5%) were frequent in occult fractures.Conclusion: Occult rib fractures may be missed on initial CT imaging despite trauma severity comparable to that of patients with overt rib fractures. Thus, the absence of a visible fracture line on initial CT should not be interpreted as evidence of minor injury, particularly in patients with moderate to severe thoracic trauma.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147812458","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}

引用次数: 0

Single-sequence low-field 3D T1-weighted MRI for scaphoid fracture detection compared to radiography: prospective diagnostic accuracy pilot study. 与x线摄影相比，单序列低场3D t1加权MRI用于舟状骨骨折检测：前瞻性诊断准确性的初步研究。

IF 1.3

Emergency Radiology Pub Date : 2026-05-02 DOI: 10.1007/s10140-026-02481-3

Claudia Neubauer, Christopher Schuppert, Carolin S Reidelbach, Horst Zajonc, Filip Simunovic, Sebastian M Goerke, Fabian Bamberg, Sebastian Wirtz, Maximilian F Russe, Thierno D Diallo, Jakob Neubauer

{"title":"Single-sequence low-field 3D T1-weighted MRI for scaphoid fracture detection compared to radiography: prospective diagnostic accuracy pilot study.","authors":"Claudia Neubauer, Christopher Schuppert, Carolin S Reidelbach, Horst Zajonc, Filip Simunovic, Sebastian M Goerke, Fabian Bamberg, Sebastian Wirtz, Maximilian F Russe, Thierno D Diallo, Jakob Neubauer","doi":"10.1007/s10140-026-02481-3","DOIUrl":"https://doi.org/10.1007/s10140-026-02481-3","url":null,"abstract":"Purpose: To determine the diagnostic accuracy of a novel high-resolution 3D T1-weighted gradient-echo sequence in low-field MRI for detecting scaphoid fractures compared with radiography.Methods: In this prospective single-center study, patients with suspected scaphoid injury underwent wrist radiography and 0.31 T extremity MRI including a 4-min 3D gradient-echo sequence (3D SST1). Three musculoskeletal radiologists independently evaluated radiographs and the isolated 3D sequence in separate sessions, rating fracture presence, displacement/stability, diagnostic confidence (five-point Likert scale), and need for additional imaging. The reference standard was based on CT and standard MRI sequences, evaluated by two experienced musculoskeletal radiologists.Results: Forty patients with 11 scaphoid fractures were included. Across readers, AUC for scaphoid fracture detection was 1.000 for 3D MRI and 0.823 for radiography (AUC-difference 0.177, 95% CI: -0.004-0.359, p = 0.056). For 3D MRI, sensitivity and NPV were 1.000 for all readers. Specificity (0.931-0.966 vs 0.655-0.862) and PPV (0.846-0.917 vs 0.444-0.667) were higher than for radiography. Diagnostic confidence was excellent (median score 1) with near-perfect inter-rater agreement (κ = 0.961). Additional imaging was not recommended in 40/36/37 cases (reader 1/2/3).Conclusion: A single 4-min high-resolution 3D low-field MRI sequence enabled highly accurate detection of scaphoid fractures with perfect sensitivity and NPV, a high reader confidence, and an improved performance compared to radiography in this small pilot cohort. This approach may facilitate rapid, radiation-free screening in acute wrist trauma.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147812611","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}

引用次数: 0

Altered renal corticomedullary differentiation on CT, Part I: A pictorial review of non-neoplastic causes. 肾皮质髓质分化的CT改变，第一部分：非肿瘤性原因的图像回顾。

IF 1.3

Emergency Radiology Pub Date : 2026-05-02 DOI: 10.1007/s10140-026-02484-0

Felipe Lopez-Ramirez, Erin Gomez, Satomi Kawamoto, Linda C Chu, Elliot K Fishman

{"title":"Altered renal corticomedullary differentiation on CT, Part I: A pictorial review of non-neoplastic causes.","authors":"Felipe Lopez-Ramirez, Erin Gomez, Satomi Kawamoto, Linda C Chu, Elliot K Fishman","doi":"10.1007/s10140-026-02484-0","DOIUrl":"https://doi.org/10.1007/s10140-026-02484-0","url":null,"abstract":"The renal corticomedullary interface represents a physiologic differentiation in perfusion between the highly vascular cortex and the medulla. On computed tomography (CT), the corticomedullary phase (CMP), typically acquired 25-35 s after contrast administration, provides an optimal window for evaluating these perfusion differences during the early phase of contrast enhancement. Although often discussed in the context of neoplastic disease, the loss of corticomedullary differentiation (CMD) most commonly occurs across a variety of nonmalignant processes and can serve as an early indicator of underlying renal pathology, including vascular insults, infectious etiologies, functional disturbances related to acute kidney injury, and fibrotic or infiltrative processes seen in chronic kidney disease. A structured approach to evaluating CMD, recognizing characteristic enhancement patterns of pathology, and correlating them with clinical context can enable radiologists to differentiate among the most common presentations. In this pictorial review, we illustrate the normal appearance and enhancement dynamics of the CMP and highlight characteristic imaging patterns of CMD loss across key nonmalignant entities. These imaging patterns underscore the sensitivity of altered CMD in detecting renal pathologies and may improve diagnostic confidence and guide timely clinical management.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147812502","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}

引用次数: 0

Diagnostic performance of artificial intelligence for identification of cervical spine fractures: a systematic review and meta-analysis. 人工智能识别颈椎骨折的诊断性能：系统回顾和荟萃分析。

IF 1.3

Emergency Radiology Pub Date : 2026-05-02 DOI: 10.1007/s10140-026-02477-z

Ali Gholamrezanezhad, Mehrdad Farrokhi, Sami Almasri, Hadis Askari, Ali Askari, Seyed Arshia Mirjafarifiroozabadi, Mohammad Amin Nochian, Eashan Kosaraju

{"title":"Diagnostic performance of artificial intelligence for identification of cervical spine fractures: a systematic review and meta-analysis.","authors":"Ali Gholamrezanezhad, Mehrdad Farrokhi, Sami Almasri, Hadis Askari, Ali Askari, Seyed Arshia Mirjafarifiroozabadi, Mohammad Amin Nochian, Eashan Kosaraju","doi":"10.1007/s10140-026-02477-z","DOIUrl":"https://doi.org/10.1007/s10140-026-02477-z","url":null,"abstract":"Purpose: This meta-analysis aimed to evaluate how effectively artificial intelligence (AI) models can diagnose cervical spine fractures.Methods: A systematic search from inception to July 2025 in databases of Medline, Scopus, and Web of Science was performed to retrieve studies applying AI models for diagnosis of cervical spine fractures. Deduplication, study screening, and full-text evaluations were performed using EndNote by two independent authors. Statistical analyses were conducted using MIDAS and Metaprop packages in Stata and Meta-Disc software.Results: Sixteen studies reporting 69 AI models were analyzed. The estimated sensitivity was 0.93 (95% CI, 0.92-0.94) and specificity was found to be 0.97 (95% CI, 0.97-0.97). The combined positive and negative likelihood ratios were 26.34 (95% CI, 15.93-43.56) and 0.07 (95% CI, 0.03-0.16), respectively. The overall accuracy was 0.96 (95% CI, 0.95-0.98), with summary receiver operating characteristic curve (AUROC) suggesting of 0.99 area under curve.Conclusion: Our meta-analysis showed that AI models demonstrate high diagnostic accuracy (0.96) for the early identification of cervical spine fractures. While our analysis suggests that AI models may achieve similar diagnostic performance using either CT or radiography, this finding should be interpreted with caution due to the limited number of X-ray studies and the high degree of heterogeneity. Given the scarcity of independent peer-reviewed validation studies and the variability in performance across AI models and study settings, the generalizability of these findings across different patient populations and clinical environments remains uncertain. Further research is required to confirm these results and account for study design variations.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147812447","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}

引用次数: 0

Pneumatosis intestinalis revisited: associated imaging findings, clinical correlation, management, risk stratification and future perspectives. 重述肠肺病：相关影像学表现、临床相关性、管理、风险分层和未来展望。

IF 1.3

Emergency Radiology Pub Date : 2026-05-02 DOI: 10.1007/s10140-026-02472-4

Kathy Truong, Waseem Wahood, Cibele Luna, Austin Dosch, Yamilé Blain

{"title":"Pneumatosis intestinalis revisited: associated imaging findings, clinical correlation, management, risk stratification and future perspectives.","authors":"Kathy Truong, Waseem Wahood, Cibele Luna, Austin Dosch, Yamilé Blain","doi":"10.1007/s10140-026-02472-4","DOIUrl":"https://doi.org/10.1007/s10140-026-02472-4","url":null,"abstract":"Background: Pneumatosis intestinalis (PI) is the imaging finding of air within the bowel wall. It constitutes a diagnostic challenge due to its broad differential and overlap in imaging appearances between benign and serious causes. A multidisciplinary approach is essential for accurate diagnosis and timely intervention, to optimize outcomes and minimize unnecessary procedures.Objective: This article aims to synthesize the literature to lay out the current state of the art in diagnosing and managing PI and discuss future perspectives. We review a series of associated imaging features including portomesenteric venous gas, vascular thrombosis, abnormal bowel wall enhancement, and bowel wall thickening or thinning. We also discuss less specific but commonly seen findings like pneumoperitoneum, ascites and fat stranding, emphasizing their context-dependent significance. We review nuances in clinical interpretation of the severity of PI, discuss the discordance in interpretation of certain clinical markers, and important considerations in specific populations. To finish, we describe ongoing efforts related to risk stratification and its importance in PI management.","PeriodicalId":11623,"journal":{"name":"Emergency Radiology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147812603","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}

引用次数: 0

Altered renal corticomedullary differentiation on CT, Part II: a pictorial review of malignant causes. 肾皮质髓质分化的CT改变，第二部分：恶性病因的图像回顾。

IF 1.3

Emergency Radiology Pub Date : 2026-04-30 DOI: 10.1007/s10140-026-02483-1

Felipe Lopez-Ramirez, Erin Gomez, Satomi Kawamoto, Linda C Chu, Elliot K Fishman

引用次数: 0

National trends in CT angiography use for dizziness in U.S. emergency departments: an Epic Cosmos analysis, 2016-2025. 美国急诊科使用CT血管造影治疗头晕的全国趋势：Epic Cosmos分析，2016-2025。

IF 1.3

Emergency Radiology Pub Date : 2026-04-29 DOI: 10.1007/s10140-026-02482-2

Dhairya A Lakhani, David M Yousem

引用次数: 0

Musculoskeletal imaging findings of xylazine-associated wounds. 二甲肼相关伤口的肌肉骨骼影像学表现。