Diagnostic and interventional radiology最新文献

{"title":"Reply: Efficacy and safety of ultrasound-guided bedside percutaneous cholecystostomy using the transhepatic approach and trocar technique in patients with acute cholecystitis.","authors":"Ahmet Cem Demirşah, Berat Acu, Çiğdem Öztunalı","doi":"10.4274/dir.2026.264277","DOIUrl":"https://doi.org/10.4274/dir.2026.264277","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Letter to the Editor regarding \"Efficacy and safety of ultrasound‑guided bedside percutaneous cholecystostomy using the transhepatic approach and trocar technique in patients with acute cholecystitis.\"","authors":"Guven Tekbas","doi":"10.4274/dir.2026.264218","DOIUrl":"10.4274/dir.2026.264218","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beyond the flow: the evolving role of magnetic resonance imaging in arteriovenous shunt evaluation.","authors":"Akihiko Sakata, Koji Fujimoto, Mami Iima, Tsukasa Saida, Kentaro Nishioka, Rintaro Ito, Maya Honda, Masahiro Yanagawa, Ryo Kurokawa, Kenji Hirata, Mariko Kawamura, Seitaro Oda, Satoru Ide, Shunsuke Sugawara, Koji Takumi, Daiju Ueda, Keitaro Sofue, Shinji Naganawa","doi":"10.4274/dir.2026.264132","DOIUrl":"https://doi.org/10.4274/dir.2026.264132","url":null,"abstract":"<p><p>Although digital subtraction angiography remains the gold standard for the diagnosis and treatment planning of intracranial arteriovenous shunts (AVS), including arteriovenous malformations and arteriovenous fistulas, non-invasive imaging is increasingly sought for comprehensive evaluation. Magnetic resonance imaging (MRI) plays a crucial role in AVS detection, identification of feeding arteries and draining veins, localization of shunt points, classification of subtypes, assessment of venous reflux and congestion, and evaluation of post-treatment residual or recurrent lesions. Clinical techniques such as time-of-flight MR angiography (MRA), contrast-enhanced time-resolved MRA, susceptibility-weighted imaging, and arterial spin labeling (ASL) are established for these assessments. Recent advances have expanded MRI capabilities: Ultrashort echo time MRA can overcome turbulent flow-related signal loss and susceptibility artifacts, improving visualization of complex nidus architecture; compressed sensing substantially accelerates three-dimensional and four-dimensional (4D)-MRA while maintaining diagnostic quality; ASL-based 4D-MRA provides high-temporal-resolution dynamic evaluation without contrast, with vessel-selective techniques enabling independent assessment of individual vascular territories; and high-resolution vessel wall imaging shows promise for risk stratification. Emerging artificial intelligence applications enable automated AVS segmentation and characterization, with potential to enhance image quality and reduce scan times. This review summarizes current MRI techniques, recent innovations, and future perspectives in the non-invasive assessment of intracranial AVS.</p>","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Letter to the Editor: Refining the double-loop drainage catheter.","authors":"Emre Utkan Büyükceran, İsmail Dilek, Erbil Arık","doi":"10.4274/dir.2026.264281","DOIUrl":"10.4274/dir.2026.264281","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply: Pleural and intra-abdominal long-term drainage: comparison of a novel double-loop and a conventional single-loop catheter.","authors":"Su Ho Kim, Jung Suk Oh, Ho Jong Chun","doi":"10.4274/dir.2026.264321","DOIUrl":"https://doi.org/10.4274/dir.2026.264321","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors associated with early hematoma expansion in intracerebral hemorrhage and the value of non-contrast computed tomography imaging features combined with clinical data for early identification.","authors":"Jun Ding, Ying Shao, ChunHong Meng","doi":"10.4274/dir.2026.264060","DOIUrl":"https://doi.org/10.4274/dir.2026.264060","url":null,"abstract":"<p><strong>Purpose: </strong>Early hematoma expansion (HE) after intracerebral hemorrhage (ICH) critically affects patient outcomes. Identifying HE risk using emergency non-contrast computed tomography (NCCT) features and clinical data is important for early risk stratification and evaluation. This study analyzed factors associated with early HE and evaluated the value of NCCT features combined with clinical data for HE identification.</p><p><strong>Methods: </strong>A total of 571 patients with spontaneous supratentorial ICH admitted between January 2022 and December 2025 were enrolled. Five NCCT signs were evaluated at baseline. Four signs significantly associated with HE (black hole, swirl, blend, and satellite signs) were summed to construct a primary comprehensive sign score (0-4); a 5-sign score additionally including the island sign was examined in a sensitivity analysis. Patients were stratified by HE status, sign score quantiles, sex, and hematoma morphology, then randomly assigned to training (n = 391) and validation (n = 180) sets. Univariate and multivariate logistic regression identified independent HE factors and constructed a combined prediction model. Model performance was evaluated using receiver operating characteristic curves, calibration curves, and decision curve analysis (DCA). HE was defined as an absolute volume increase > 6 mL or a relative increase > 33% on follow-up CT compared with baseline CT.</p><p><strong>Results: </strong>Among 571 patients, 292 (51.1%) experienced early HE. Multivariate analysis showed that the 4-sign score [odds ratio (OR): 1.850, 95% confidence interval (CI): 1.505-2.274, <i>P</i> < 0.001], irregular hematoma morphology (OR: 2.071, 95% CI: 1.262-3.399, <i>P</i> = 0.004), time from onset to initial CT (OR: 0.845, 95% CI: 0.750-0.953, <i>P</i> = 0.006), male sex (OR: 1.500, 95% CI: 1.028-2.189, P = 0.036), and baseline CT attenuation (OR: 0.964, 95% CI: 0.934-0.995, <i>P</i> = 0.024) were independently associated with HE. The primary combined model achieved an area under the curve (AUC) of 0.731 (95% CI: 0.682-0.781) in the training set and 0.716 (95% CI: 0.641-0.791) in the validation set. The 5-sign sensitivity model showed similar discrimination (AUC: 0.722 and 0.704, respectively), with no significant difference (<i>P</i> = 0.188 and <i>P</i> = 0.283). Calibration and DCA were broadly comparable between models.</p><p><strong>Conclusion: </strong>A 4-sign comprehensive imaging score, irregular hematoma morphology, time from onset to initial CT, male sex, and baseline CT attenuation were independently associated with early HE in patients with ICH.</p><p><strong>Clinical significance: </strong>A model based on NCCT features combined with clinical data may provide a practical adjunct for early HE risk stratification in patients with ICH.</p>","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply: Impact of biopsy route, muscle pathway, and cortex target on safety and diagnostic yield in ultrasound-guided renal parenchymal biopsy.","authors":"Kadir Han Alver, Halil Serdar Aslan, Muhammet Arslan, Muhammed Tekinhatun, Mahmut Demirci, Nagihan Yalçın, Ahmet Baki Yağcı","doi":"10.4274/dir.2026.264294","DOIUrl":"https://doi.org/10.4274/dir.2026.264294","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148668479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Letter to the Editor: Impact of biopsy route, muscle pathway, and cortex target on safety and diagnostic yield in ultrasound-guided renal parenchymal biopsy.","authors":"Ahmet Cem Demirşah","doi":"10.4274/dir.2026.264286","DOIUrl":"10.4274/dir.2026.264286","url":null,"abstract":"","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148668498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-world multimetric comparison of four commercial artificial intelligence solutions for intracranial hemorrhage detection.","authors":"Jimin Kim, Ha Young Lee, Jin Eun, Sanghyuk Im, Eun Jeong Min, Se Won Oh","doi":"10.4274/dir.2026.263984","DOIUrl":"https://doi.org/10.4274/dir.2026.263984","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the real-world multimetric performance of four commercially available computed tomography (CT)-based artificial intelligence (AI) solutions for acute intracranial hemorrhage (AIH).</p><p><strong>Methods: </strong>Patients who underwent non-contrast brain CT for suspected AIH in our emergency room between February and March 2024 were screened. After applying the inclusion and exclusion criteria, 436 CT scans were included in the final analysis. Three neuroradiologists established the ground truth for AIH and hemorrhage volume. For detection performance, the area under the receiver operating characteristic curve (AUROC), area under the precision-recall curve (AUPRC), and Brier score were calculated based on the available probability score, whereas sensitivity, specificity, precision, and F1 score were calculated based on binary classification. Bland-Altman analysis was performed to assess volumetric agreement for AIH between each algorithm's calculations and the neuroradiologists' measurements.</p><p><strong>Results: </strong>A total of 436 patients (mean age, 62 years ± 20; male patients, 209) were enrolled. The AUROC (0.96 to 0.99) and sensitivity (0.85 to 0.92) were high across all solutions, with no statistically significant differences in pairwise comparisons (<i>P</i> > 0.05). However, solution B demonstrated the highest AUPRC [0.98, 95% confidence interval (CI): 0.94, 1.00] and the lowest Brier score [0.02 (95% CI: 0.02, 0.03)]. In binary performance, both solutions B and D exhibited significantly higher specificity (1.00 and 0.99), precision (0.90 to 0.98), and F1 score (0.87 to 0.94) than the other solutions (<i>P</i> < 0.05). For volumetric agreement of AIH, solution D showed the lowest mean difference [-0.87 mm³ (95% CI: -1.47, -0.27)] and the narrowest limits of agreement (-13.4 to 11.6) relative to the neuroradiologists' measurements.</p><p><strong>Conclusion: </strong>In a real-world emergency setting, all four commercially available CT-based AI solutions for AIH demonstrated uniformly excellent performance; however, meaningful differences emerged in confirmatory performance and volumetric agreement. These distinct, algorithm-specific trade-offs provide practical guidance for selecting and integrating appropriate AI solutions to improve AIH diagnosis and management workflows.</p><p><strong>Clinical significance: </strong>The algorithm-specific performance trade-offs identified in this study suggest that no single AI solution is universally optimal; solutions with superior confirmatory performance may reduce unnecessary notifications in high-volume emergency settings, whereas those with more consistent volumetric agreement may better support treatment planning and longitudinal monitoring. A structured, multimetric evaluation aligned with institutional priorities is essential for evidence-based AI procurement in acute stroke imaging.</p>","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148469552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Simmons-lock technique: a simple solution for stable left gastric artery engagement.","authors":"Ömer Faruk Sevinç, Erbil Arık, Onur Taydaş, Muhammed Said Beşler","doi":"10.4274/dir.2026.264117","DOIUrl":"https://doi.org/10.4274/dir.2026.264117","url":null,"abstract":"<p><p>Catheterization of the left gastric artery (LGA) is often challenging due to acute angulations that compromise catheter stability. We describe the Simmons (SIM)-lock technique, a novel approach using a standard 5-Fr SIM-1 catheter and a coaxial microcatheter. The microcatheter is first advanced into a distal branch to serve as an anchor, allowing the SIM1 catheter to be deep-seated within the celiac trunk. Upon removal of the microcatheter, the SIM1 catheter assumes its functional recurved shape, with the tip oriented cranially. A controlled pullback maneuver then causes the free tip to slide and lock securely into the LGA ostium. This method transforms a typically unstable engagement into a controlled, stepwise procedure, providing a stable platform for intervention while utilizing standard, cost-effective equipment.</p>","PeriodicalId":11341,"journal":{"name":"Diagnostic and interventional radiology","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148469595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}