Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes最新文献

{"title":"Deep Learning-Based Contrast Boosting in Low-Contrast Media Pre-TAVR CT Imaging.","authors":"Jeaneun Park, Jung Im Jung, Kyunghwa Han, Suyon Chang","doi":"10.1177/08465371251322054","DOIUrl":"10.1177/08465371251322054","url":null,"abstract":"<p><p><b>Purpose:</b> This study investigates the impact of deep learning-based contrast boosting (DL-CB) on image quality and measurement reliability in low-contrast media (low-CM) CT for pre-transcatheter aortic valve replacement (TAVR) assessment. <b>Methods:</b> This retrospective study included TAVR candidates with renal dysfunction who underwent low-CM (30-mL: 15-mL bolus of contrast followed by 50-mL of 30% iomeprol solution) pre-TAVR CT between April and December 2023, along with matched standard-CM controls (n = 68). Low-CM images were reconstructed as conventional, 50-keV, and DL-CB images. Qualitative and quantitative image quality were compared among image sets. The aortic annulus was measured by 2 independent readers on low-CM CT images, and interobserver reliability was assessed. <b>Results:</b> DL-CB significantly improved contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR) compared to conventional and 50-keV images (CNR: 12.5-13.4, 18-19.8, and 21.9-24; SNR: 10.8-15.5, 10.7-15.5, and 16.8-26.7 on conventional, 50-keV, and DL-CB images, respectively; <i>P</i> < .001). DL-CB achieved comparable CNR (21.9-24 vs 27-27.7, <i>P</i> = .39-.61) and comparable to slightly higher SNR (16.8-26.7 vs 15.7-20.2, <i>P</i> = .003-.80) to standard-CM images. For aortic annular measurement, DL-CB demonstrated high interobserver reliability, with an intraclass correlation coefficient (ICC) of .96 and small mean differences (area: 0.01 cm², limits of agreement [LoA]: -0.52 to 0.55 cm²; perimeter: 0.02 mm, LoA: -4.49 to 4.53 mm). <b>Conclusions:</b> DL-CB improves image quality and provides high measurement reliability in low-CM CT for pre-TAVR assessment in patients with renal dysfunction, without requiring dual-energy CT.</p>","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"772-781"},"PeriodicalIF":3.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143607283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging-Based Approach to Venous-Origin Chronic Pelvic Pain.","authors":"Vaneeza Moosa, Tiffany Ni, Inbar Friedman, Andrew D Brown","doi":"10.1177/08465371251336121","DOIUrl":"10.1177/08465371251336121","url":null,"abstract":"<p><p>Chronic pelvic pain (CPP) is a debilitating condition affecting up to 26% of women worldwide. Among its many causes, pelvic venous disorders (PeVD) is increasingly recognized as an underdiagnosed contributor, often overlooked due to its non-specific presentation. PeVD results from venous reflux, or obstruction, leading to venous hypertension, congestion, and chronic pain. Advanced imaging techniques play a pivotal role in diagnosing PeVD, differentiating it from other etiologies of CPP. Ultrasound, particularly Doppler imaging, serves as the firstline modality for assessing venous reflux and dilation. Computed tomography and magnetic resonance venography provide detailed anatomical and haemodynamic evaluations, aiding in the identification of compressive syndromes and collateral pathways. Selective venography remains the gold standard, offering real-time visualization of reflux severity and guiding minimally invasive interventions such as venous embolization. Despite these advances, PeVD remains underrecognized in clinical practice, leading to delays in diagnosis and management. Increased awareness and standardized diagnostic criteria are crucial for improving patient outcomes. A multidisciplinary approach incorporating radiologists, gynecologists, and vascular specialists is essential for the comprehensive evaluation and treatment of PeVD. Emerging therapies, including endovascular techniques, offer promising options for symptom relief, reducing the need for invasive surgical procedures. This review highlights the pathophysiology, imaging modalities, and evolving management strategies for PeVD, emphasizing the importance of early recognition and intervention in patients with CPP.</p>","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"782-792"},"PeriodicalIF":3.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144056244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Current and Future Landscape of Interventional Neuro-Oncology.","authors":"Eef J Hendriks, David Volders","doi":"10.1177/08465371251347833","DOIUrl":"10.1177/08465371251347833","url":null,"abstract":"","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"800-801"},"PeriodicalIF":3.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144303682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AI Screening Tool Based on X-Rays Improves Early Detection of Decreased Bone Density in a Clinical Setting.","authors":"Andrew N Jayarajah, Angela Atinga, Linda Probyn, Thiru Sivakumaran, Monique Christakis, Anastasia Oikonomou","doi":"10.1177/08465371251380240","DOIUrl":"https://doi.org/10.1177/08465371251380240","url":null,"abstract":"<p><strong>Purpose: </strong>Osteoporosis is an under-screened musculoskeletal disorder that results in diminished quality of life and significant burden to the healthcare system. We aimed to evaluate the ability of Rho, an artificial intelligence (AI) tool, to prospectively identify patients at-risk for low bone mineral density (BMD) from standard x-rays, its adoption rate by radiologists, and acceptance by primary care providers (PCPs).</p><p><strong>Methods: </strong>Patients ≥50 years were recruited when undergoing an x-ray of a Rho-eligible body part for any clinical indication. Questionnaires were completed at baseline and 6-month follow-up, and PCPs of \"Rho-Positive\" patients (those likely to have low BMD) were asked for feedback. Positive predictive value (PPV) was calculated in patients who returned within 6 months for a DXA.</p><p><strong>Results: </strong>Of 1145 patients consented, 987 had x-rays screened by Rho, and 655 were flagged as Rho-Positive. Radiologists included this finding in 524 (80%) of reports. Of all Rho-Positive patients, 125 had a DXA within 6 months; Rho had a 74% PPV for DXA T-Score <-1. From 51 PCP responses, 78% found Rho beneficial. Of 389 patients with follow-up questionnaire data, a greater proportion of Rho-Positive versus -negative patients had discussed bone health with their PCP since study start (36% vs 18%, <i>P</i> < .001), or were newly diagnosed with osteoporosis (11% vs 5%; <i>P</i> = .03).</p><p><strong>Conclusion: </strong>By identifying patients at-risk of low BMD, with acceptability of reporting by radiologists and generally positive feedback from PCPs, Rho has the potential to improve low screening rates for osteoporosis by leveraging existing x-ray data.</p>","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251380240"},"PeriodicalIF":3.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145187754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Balancing Model Generalization With Local Performance: Insights From AI in Prostate Cancer Classification.","authors":"Emir A Syailendra, Zahra Rahmatullah, Felipe Lopez-Ramirez, Linda C Chu","doi":"10.1177/08465371251377467","DOIUrl":"https://doi.org/10.1177/08465371251377467","url":null,"abstract":"","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251377467"},"PeriodicalIF":3.7,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145132833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Burnout and Wellness Interventions Among Canadian Radiology Trainees: A Single Institution Study.","authors":"Joanna Yuen, Morgan Young-Speirs, Waqas Ahmad, Urvi Joshi, Cameron Hague, Silvia D Chang","doi":"10.1177/08465371251369842","DOIUrl":"https://doi.org/10.1177/08465371251369842","url":null,"abstract":"<p><strong>Purpose: </strong>This study examines factors contributing to burnout among radiology residents through a Canadian lens and assesses strategies employed at our institution to mitigate its impact.</p><p><strong>Methods: </strong>This was a single-institution cross-sectional study. Four anonymous online surveys were administered through Qualtrics to PGY 2-5 radiology residents from 2021 to 2025. These surveys identified residents with burnout and distress and assessed contributing factors, suggestions for reducing burnout, and residents' responses to implemented interventions. Interventions were employed at 2 hospitals within our institution.</p><p><strong>Results: </strong>The surveys had response rates of 30% (2021), 57.7% (2023), 60% (2024), and 62% (2025). 50% of pre-intervention respondents were identified as burned out. The rate reduced to 18.8% post-intervention, with results not being statistically significant (<i>P</i> = .167). Top factors driving burnout included time (eg, increased work hours, time constraints), extra duties (clinical and administrative), and perceived lack of radiology knowledge when dealing with complex cases. Interventions included additional daily 1-hour teaching sessions, wellness lunch rounds, debriefing sessions, transitioning from paper-based protocolling to a hybrid-electronic paper-based system, call schedule modifications, improved ergonomics, and social functions, including incorporating indoor and outdoor activities. Interventions targeting work hours were subjectively the most well-received in combating burnout.</p><p><strong>Conclusion: </strong>This study underscores the prevalence of burnout among radiology residents. Our institution has implemented a multi-faceted approach to address burnout within our radiology residency program.</p>","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251369842"},"PeriodicalIF":3.7,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145132846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Representation in Action: Early Radiology Exposure for Low Socio-Economic Status High School Students.","authors":"Sarah Moussa, Hendrick Paquette Ambroise, Ariane Songa Côté, Olga Romano","doi":"10.1177/08465371251377062","DOIUrl":"10.1177/08465371251377062","url":null,"abstract":"","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251377062"},"PeriodicalIF":3.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145088405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-World Performance of MRI-TRUS Fusion Biopsy in a Canadian Tertiary Centre: What Drives a Positive Diagnosis?","authors":"Guilherme Strieder de Oliveira, Leonardo K Bittencourt, Silvia D Chang, Adriano B Dias","doi":"10.1177/08465371251375871","DOIUrl":"https://doi.org/10.1177/08465371251375871","url":null,"abstract":"","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251375871"},"PeriodicalIF":3.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145024877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Part 3: CAR Dysfunction-Associated Steatotic Liver Disease Working Group Recommendations for Ultrasound Shear Wave Elastography and MR Elastography Program Implementation, Funding, and Quality Assurance\".","authors":"","doi":"10.1177/08465371251374855","DOIUrl":"https://doi.org/10.1177/08465371251374855","url":null,"abstract":"","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251374855"},"PeriodicalIF":3.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochemical Metrics for Parathyroid Scintigraphy in the Pre-Surgical Evaluation of Hyperparathyroidism.","authors":"Ryan L Smith, Victoria Linehan, Steven Burrell, Ian R Macdonald","doi":"10.1177/08465371251364714","DOIUrl":"https://doi.org/10.1177/08465371251364714","url":null,"abstract":"<p><strong>Purpose: </strong>To correlate parathyroid scintigraphy results with patient biochemistry, surgery, and pathology to inform appropriateness criteria and assess biochemical metrics in the imaging workup of hyperparathyroidism.</p><p><strong>Methods: </strong>This retrospective study included 421 patients who underwent parathyroid scintigraphy. Patients were grouped based on primary versus secondary hyperparathyroidism, and clinical profiles were reviewed for scan result, blood work, surgical results, and pathology. Performance metrics of scintigraphy were analyzed. Demographics, bloodwork, and location were compared between positive and negative scans. Predictors of positive scans were identified by multivariate logistic regression analysis. The performance of biochemistry to predict scan results was evaluated by ROC analyses.</p><p><strong>Results: </strong>Positive tests-occurring in 52% of patients-were associated with higher parathyroid hormone (PTH) and corrected calcium. However, PTH was only predictive of a positive test in patients with secondary hyperparathyroidism. On multivariate analysis, male sex, corrected calcium, and younger age were predictors of a positive scan. Corrected calcium was the most predictive with an OR of 1.28 for every 0.1 mmol/L increase. Based on ROC analysis, corrected calcium had an AUC of 0.628 and a cutoff of 2.65 mmol/L maximized sensitivity (88%) and specificity (35%) for a positive test.</p><p><strong>Conclusion: </strong>In this large retrospective cohort, several biochemical metrics, including corrected calcium levels, were predictive of a positive scintigraphy study. Furthermore, biochemistry, including PTH levels, significantly differed between primary and secondary hyperparathyroidism suggesting that tailored biochemical metrics are required. This work sets a foundation for the development of a robust biochemical scoring system to optimize patient selection for parathyroid imaging.</p>","PeriodicalId":55290,"journal":{"name":"Canadian Association of Radiologists Journal-Journal De L Association Canadienne Des Radiologistes","volume":" ","pages":"8465371251364714"},"PeriodicalIF":3.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}