Acta radiologica最新文献_第5页

Percutaneous cryoablation of renal tumors adjacent to critical structures: impact of adjacent organ type on local tumor control. 邻近关键结构肾肿瘤的经皮冷冻消融：邻近器官类型对局部肿瘤控制的影响。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-05-01 Epub Date: 2025-02-21 DOI: 10.1177/02841851241310408

Mizuki Ozawa, Miyuki Sone, Shunsuke Sugawara, Chihiro Itou, Shintaro Kimura, Masahiko Kusumoto, Yoshiyuki Matsui

{"title":"Percutaneous cryoablation of renal tumors adjacent to critical structures: impact of adjacent organ type on local tumor control.","authors":"Mizuki Ozawa, Miyuki Sone, Shunsuke Sugawara, Chihiro Itou, Shintaro Kimura, Masahiko Kusumoto, Yoshiyuki Matsui","doi":"10.1177/02841851241310408","DOIUrl":"10.1177/02841851241310408","url":null,"abstract":"BackgroundRenal cell carcinomas (RCCs) adjacent to critical structures can be safely treated using percutaneous cryoablation with adjunctive techniques. However, there are only a few reports describing the factors affecting local tumor control after percutaneous cryoablation for such RCCs.PurposeTo evaluate the factors affecting local tumor control in the percutaneous cryoablation of RCCs adjacent to critical structures.Material and MethodsA total of 403 tumors from 328 patients were retrospectively reviewed. Patients with histologically proven RCCs adjacent to critical structures with at least 1 year of follow-up after treatment were included. Hereditary RCCs were excluded. Of the 403 tumors, 40 met the criteria. Owing to the tumor location, all procedures were performed using adjunctive techniques. Baseline, perioperative, and follow-up data were collected and factors affecting local tumor progression were evaluated. Comparisons between groups with and without local tumor progression were performed using Fisher's exact test or Wilcoxon's rank sum test.ResultsThe median follow-up was 1289.5 days. Local tumor progression was observed in 7/40 (17.5%) patients. Univariate analysis revealed that significant factors affecting local tumor progression were situated adjacent to the ureter (P = 0.005), requiring adjunctive techniques other than hydro- and/or pneumo-dissection (P = 0.005), as well as the distance between tumors and critical structures (P = 0.04). The ice-ball margin tended to be smaller in the group with local tumor progression but this was not significant (P = 0.07).ConclusionRenal tumors adjacent to the ureter may result in local tumor progression after cryoablation compared with tumors adjacent to other organs.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"487-493"},"PeriodicalIF":1.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466664","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}

引用次数: 0

CT-based radiomics predictive model for spread through air space of IA stage lung adenocarcinoma. 基于ct放射组学的IA期肺腺癌空气扩散预测模型。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-05-01 Epub Date: 2025-02-18 DOI: 10.1177/02841851241305737

Song Chen, Xiang Wang, Xu Lin, Qingchu Li, Shaochun Xu, Hongbiao Sun, Yi Xiao, Li Fan, Shiyuan Liu

{"title":"CT-based radiomics predictive model for spread through air space of IA stage lung adenocarcinoma.","authors":"Song Chen, Xiang Wang, Xu Lin, Qingchu Li, Shaochun Xu, Hongbiao Sun, Yi Xiao, Li Fan, Shiyuan Liu","doi":"10.1177/02841851241305737","DOIUrl":"10.1177/02841851241305737","url":null,"abstract":"BackgroundSpread through air spaces (STAS) in lung adenocarcinoma means different treatment and worse prognosis.PurposeTo construct a radiomics model based on CT scans to predict the presence of STAS in stage IA lung adenocarcinoma, compared with the traditional clinical model.Material and MethodsThe study included 317 patients (median age = 57.21 years; age range = 45.84-68.61 years) with pathologically confirmed stage IA lung adenocarcinoma. In total, 122 (38.5%) patients were diagnosed with STAS by pathology after the operation. Two experienced radiologists independently segmented the lesions using MITK software and extracted 1791 radiomics features using Python. Single-factor t-test or Mann-Whitney U-test and LASSO were used to screen for radiomics signatures related to STAS. This study constructed a radiomics model, a clinical model, and a combined model, combining radiomics and clinical features. Model performance was evaluated using the area under the curve (AUC).ResultsBy single-factor analysis, four clinical features and 13 radiomics features were significantly associated with STAS. The three models (the clinical, radiomics, and combine models) achieved predictive efficacy, with an AUC of 0.849, 0.867, and 0.939, respectively, in the training set and 0.808, 0.848, and 0.876, respectively, in the testing set.ConclusionThe combined model based on the radiomics and clinical features of preoperative chest CT could be used to preoperatively diagnose the presence of STAS in stage IA lung adenocarcinoma and has an excellent diagnostic performance.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"477-486"},"PeriodicalIF":1.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447763","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}

引用次数: 0

Diagnostic value of contrast-enhanced ultrasound in ovarian cancer: a meta-analysis. 超声造影对卵巢癌的诊断价值：荟萃分析。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-05-01 Epub Date: 2025-03-11 DOI: 10.1177/02841851241297201

Jing Li, Wei-Min Kong

{"title":"Diagnostic value of contrast-enhanced ultrasound in ovarian cancer: a meta-analysis.","authors":"Jing Li, Wei-Min Kong","doi":"10.1177/02841851241297201","DOIUrl":"10.1177/02841851241297201","url":null,"abstract":"BackgroundOvarian cancer has been reported to be the eighth most common cancer among women worldwide.PurposeTo assess the diagnostic efficacy of contrast-enhanced ultrasound (CEUS) in distinguishing between benign and malignant ovarian tumors.Material and MethodsA comprehensive search of scientific literature databases, including PubMed, Cochrane Library, Web of Science, Wanfang, and CNKI, was conducted from their inception to November 2019 to identify relevant studies on the use of CEUS in the differential diagnosis of benign and malignant ovarian tumors. Sensitivity (SEN), specificity (SPE), positive and negative likelihood ratios (LR+/LR-), diagnostic odds ratios (DORs), and their corresponding 95% confidence intervals (CIs) were retrieved and analyzed using Stata 15.0.ResultsAfter rigorous screening, a total of 15 high-quality clinical studies encompassing 934 patients with ovarian cancer, comprising 969 ovarian tumors (403 malignant tumors and 566 benign tumors), were included in the analysis. Data analysis revealed significant correlations between CEUS and various diagnostic indices for ovarian tumors: the combined SEN and SPE were 0.93 (95% CI = 0.88-0.96) and 0.93 (95% CI = 0.90-0.96), respectively, and the combined LR+ and LR- were 14.07 (95% CI = 9.46-20.92) and 0.08 (95% CI = 0.05-0.13), respectively, with a combined DOR of 185.15 (95% CI = 93.31-367.41). The area under the summary receiver operating characteristic curve (AUC) was 0.98 (95% CI = 0.96-0.99). No publication bias was detected in the meta-analysis (P = 0.62).ConclusionCEUS demonstrates significant value in the diagnosis and differential diagnosis of benign and malignant ovarian tumors.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"461-469"},"PeriodicalIF":1.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143603377","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}

引用次数: 0

"Dynamic ABER" sequence using gradient recalled echo radial k-space sampling for kinematic evaluation of humeral excursion related to the glenoid: a feasibility study in 15 patients with a 3-year follow-up. 使用梯度回忆回声径向k空间采样的“动态ABER”序列对与肩关节相关的肱骨偏移进行运动学评估：一项对15例患者进行3年随访的可行性研究。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-29 DOI: 10.1177/02841851251335219

John R Zech, William R Walter, Eitan Novogrodsky, Mary Bruno, James Babb, Christopher John Burke

{"title":"\"Dynamic ABER\" sequence using gradient recalled echo radial k-space sampling for kinematic evaluation of humeral excursion related to the glenoid: a feasibility study in 15 patients with a 3-year follow-up.","authors":"John R Zech, William R Walter, Eitan Novogrodsky, Mary Bruno, James Babb, Christopher John Burke","doi":"10.1177/02841851251335219","DOIUrl":"https://doi.org/10.1177/02841851251335219","url":null,"abstract":"BackgroundRapid real-time magnetic resonance (MR) sequences enable dynamic articular kinematic assessment. The abduction-external rotation (ABER) position has long been used to characterize glenohumeral pathology.PurposeTo evaluate a dynamic gradient recall echo (GRE) sequence for ABER-positioned glenohumeral joint kinematic assessment correlating with subjective instability and clinical apprehension testing.Material and MethodsSymptomatic patients were scanned using a routine MR arthrogram protocol supplemented by an additional \"dynamic ABER\" GRE technique acquired with the arm abducted and then internally-externally rotated in real time. Dynamic motion of the humeral head between the extremes of motion in the abducted and externally rotated positions was evaluated. The cohort was followed for 3 years.ResultsA total of 15 dynamic ABER studies in 15 different patients were evaluated by three readers (right: n=9; left: n=6), with a mean age of 30 years (range=19-45 years). Good accuracy of the humeral head excursion between the abducted and externally-internally rotated positions (AUC=0.88) was observed as a test for positively detecting instability. An association was detected between clinical instability and mean humeral head excursion as measured by all three readers (P = 0.026), although no association between positive apprehension testing and mean humeral head excursion was detected. There was a trend towards surgery-naïve patients with higher mean humeral head excursion subsequently undergoing surgical management (P=0.088), although this did not reach statistical significance.ConclusionCorrelation between subjective instability and humeral head translation demonstrated on a dynamic ABER sequence added to MR shoulder arthrograms was observed but without association with clinical apprehension testing.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251335219"},"PeriodicalIF":1.1,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956080","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}

引用次数: 0

3D evaluation of bony orbit characteristics in relation to age, sex, and symmetry: a quantitative CT study. 骨眶特征与年龄、性别和对称性的三维评价：一项定量CT研究。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-23 DOI: 10.1177/02841851251326162

Ebru Otu, Nureda Nalçacı Bozkurt, Tuğrul Örmeci, Neslihan Yüzbaşıoğlu

{"title":"3D evaluation of bony orbit characteristics in relation to age, sex, and symmetry: a quantitative CT study.","authors":"Ebru Otu, Nureda Nalçacı Bozkurt, Tuğrul Örmeci, Neslihan Yüzbaşıoğlu","doi":"10.1177/02841851251326162","DOIUrl":"https://doi.org/10.1177/02841851251326162","url":null,"abstract":"BackgroundIdentifying accurate data about the bony orbit features according to age, sex, and symmetry is crucial for the effective treatment of orbital pathologies.PurposeTo analyze changes in the dimensions of the orbital aperture and volume of the bony orbit according to age and sex, and to evaluate individual symmetry using 3D computed tomography scans.Material and MethodsWe retrospectively analyzed the data obtained from 150 Turkish adults (75 men, 75 women) without an orbital pathology. The study sample was categorized into three age groups: 20-39, 40-59, and ≥60 years. We used the 3DSlicer and Syngo software to measure bony orbital volume (BOV) and the dimensions of the orbital aperture.ResultsThe BOV showed no difference between the left and right orbit for each individual, while orbital height and width were significantly different between the two sides (P < 0.05). The mean BOV for both orbits was significantly higher in the ≥60-year age group compared to the 20-39-year age group (P < 0.05). In all age categories, men exhibited a larger BOV than women (P < 0.001). There were no significant differences in BOV across age groups for either sex (P > 0.05). However, the direct effect of age on BOV was found to be significant only in women (p < 0.05)ConclusionOur findings indicate a significant relationship between aging and BOV, particularly in women, and individual asymmetry in orbital height and width parameters. These results provide accurate normative data for the diagnosis and treatment of orbital pathologies.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251326162"},"PeriodicalIF":1.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955383","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}

引用次数: 0

Improved diagnosis of adnexal lesions by integrating intra-tumoral hemorrhage detection with non-contrast MRI scoring (NCMS) using susceptibility-weighted sequences. 利用敏感性加权序列，将肿瘤内出血检测与非对比MRI评分（NCMS）相结合，提高附件病变的诊断。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-23 DOI: 10.1177/02841851251333551

Mayumi Takeuchi, Kenji Matsuzaki, Masafumi Harada

{"title":"Improved diagnosis of adnexal lesions by integrating intra-tumoral hemorrhage detection with non-contrast MRI scoring (NCMS) using susceptibility-weighted sequences.","authors":"Mayumi Takeuchi, Kenji Matsuzaki, Masafumi Harada","doi":"10.1177/02841851251333551","DOIUrl":"https://doi.org/10.1177/02841851251333551","url":null,"abstract":"BackgroundDynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) protocol was included into the Ovarian-Adnexal Reporting & Data System (O-RADS) MRI scoring system. To avoid the administration of contrast medium, the non-contrast MRI scoring (NCMS) system was proposed.PurposeTo evaluate the contribution of detecting intra-tumoral hemorrhage in the solid tissue of adnexal masses to improve tumor characterization and enhance the risk stratification of adnexal lesions using the NCMS system.Material and MethodsMRI findings including susceptibility-weighted sequences (T2*-weighted MR angiography [SWAN]) were retrospectively analyzed in 126 surgically confirmed adnexal tumors with solid tissue components (20 benign, 106 malignant). Solid tissue was classified as malignant based on the NCMS criteria, defined by intermediate intensity on T2-weighted (T2W) imaging, and corresponding diffusion restriction. Hemorrhage was assessed based on high intensity on T1-weighted (T1W) imaging and susceptibility-related signal voids on SWAN.ResultsThe NCMS solid tissue criteria identified malignancy with a sensitivity of 94.3%, specificity of 60%, and accuracy of 88.9%. High intensity on T1W imaging and signal voids on SWAN were observed in 23.6% and 72.6% of malignant lesions, compared to 0% and 5% in benign lesions, respectively. Hemorrhage was frequently observed in high-grade malignant tumors, or hemorrhagic subtypes. The combination of NCMS criteria and/or presence of intra-tumoral hemorrhage was associated with malignancy, yielding a sensitivity of 98.1%, specificity of 60%, and accuracy of 92.1%.ConclusionThe inclusion of intra-tumoral hemorrhage enhances the diagnostic accuracy of the NCMS for characterizing adnexal lesions. SWAN may also aid in estimating tumor grade and identifying hemorrhagic subtypes.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251333551"},"PeriodicalIF":1.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958035","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}

引用次数: 0

The diagnostic performance and reader agreement of the Prostate Imaging for Recurrence Reporting system in the evaluation of local recurrence in patients with biochemically recurrent prostate cancer. 前列腺影像学复发报告系统在评估生化复发前列腺癌患者局部复发中的诊断性能及读者认同。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-23 DOI: 10.1177/02841851251334364

Xiang Liu, Shuyi Yang, Wenhui Deng, Dongye Li, Jun Shen

{"title":"The diagnostic performance and reader agreement of the Prostate Imaging for Recurrence Reporting system in the evaluation of local recurrence in patients with biochemically recurrent prostate cancer.","authors":"Xiang Liu, Shuyi Yang, Wenhui Deng, Dongye Li, Jun Shen","doi":"10.1177/02841851251334364","DOIUrl":"https://doi.org/10.1177/02841851251334364","url":null,"abstract":"BackgroundThe multiparametric magnetic resonance imaging (mpMRI)-based Prostate Imaging for Recurrence Reporting (PI-RR) system has been proposed to evaluate local recurrence in patients with prostate cancer (PCa) who have been treated with radiation therapy (RT) or radical prostatectomy (RP).PurposeTo evaluate the diagnostic performance and interreader agreement of the PI-RR system in the diagnosis of locally recurrent PCa remains.Material and MethodsA total of 110 patients who have biochemically recurrent PCa after RT (n = 35) or RP (n = 75) were included in this retrospective study. All patients underwent mpMRI, PSMA-PET/CT, and biopsy. Four radiologists with varying levels of expertise independently assessed the local recurrence of PCa using PI-RR. The reference standard was the biopsy pathology. The receiver operating characteristic (ROC) curve was used to evaluate the performance of PI-RR and PSMA-PET/CT, and areas under the ROC curve (AUC) were calculated. Interreader agreement across four readers was evaluated using the intraclass correlation coefficient (ICC).ResultsAmong 110 patients with biochemically recurrent PCa, 28 had local recurrence and 82 had no local recurrence. Using a cutoff of 4, the AUCs of PI-RR in the diagnosis of local recurrence were in the range of 0.61-0.84 in patients treated with RT and 0.71-0.89 in patients treated with RP. The ICC was 0.86 (95% confidence interval = 0.81-0.91).ConclusionPI-RR using a cutoff of 4 has a favorable diagnostic performance and interreader agreement, which might be alternatively used for detecting local recurrence in patients with biochemically recurrent PCa treated with RT or RP.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251334364"},"PeriodicalIF":1.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963610","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}

引用次数: 0

Qualitative assessment of cartilage degeneration and morphology of the sigmoid notch using T1rho and T2 mapping: a cross-sectional study. 使用T1rho和T2作图对乙状结肠切迹软骨退变和形态的定性评估：一项横断面研究。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-16 DOI: 10.1177/02841851251330876

Keiko Onaka, Hirotaka Okubo, Akira Yogi, Shiho Miyazaki, Katsunori Goya, Fuminori Kanaya, Kotaro Nishida

{"title":"Qualitative assessment of cartilage degeneration and morphology of the sigmoid notch using T1rho and T2 mapping: a cross-sectional study.","authors":"Keiko Onaka, Hirotaka Okubo, Akira Yogi, Shiho Miyazaki, Katsunori Goya, Fuminori Kanaya, Kotaro Nishida","doi":"10.1177/02841851251330876","DOIUrl":"https://doi.org/10.1177/02841851251330876","url":null,"abstract":"BackgroundThe morphology of radial sigmoid notch varies widely among individuals. It remains unclear whether variations in sigmoid notch morphology influence cartilage degeneration in this region. T1rho and T2 mapping, which are useful magnetic resonance imaging (MRI) methods to assess early cartilage degeneration, may help us evaluate the relationship between the morphology and cartilage degeneration of sigmoid notch.PurposeTo investigate the relationship between cartilage degeneration of radial sigmoid notch and its morphology.Material and MethodsWe investigated the dominant wrists of 40 healthy volunteers (mean age = 34.1 years) using 3-T MRI. We measured the inclination, depth, and width of the sigmoid notch on an axial multi-echo gradient-echo, and the ulnar head diameter on coronal T2-weighted images. T1rho and T2 values of the volar, central, and dorsal cartilages of the sigmoid notch were measured on coronal T1rho and T2 mapping. We evaluated the relationships of T1rho or T2 values of the three regions with age and morphological measurements using Pearson's correlation analysis and multiple linear regression analysis.ResultsThe T2 value of the dorsal sigmoid notch positively correlated with age and width of the sigmoid notch. Multiple linear regression analysis showed that older age and wider sigmoid notch significantly increased the dorsal T2 value.ConclusionA wider sigmoid notch and aging may induce cartilage degeneration in the dorsal sigmoid notch. This association can help future studies about distal radioulnar joint diseases.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251330876"},"PeriodicalIF":1.1,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956378","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}

引用次数: 0

Enhanced detection of autism spectrum disorder through neuroimaging data using stack classifier ensembled with modified VGG-19. 基于改进VGG-19的堆栈分类器增强自闭症谱系障碍的神经影像学检测。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-15 DOI: 10.1177/02841851251333974

Yazeed Alashban

{"title":"Enhanced detection of autism spectrum disorder through neuroimaging data using stack classifier ensembled with modified VGG-19.","authors":"Yazeed Alashban","doi":"10.1177/02841851251333974","DOIUrl":"https://doi.org/10.1177/02841851251333974","url":null,"abstract":"BackgroundAutism spectrum disorder (ASD) is a neurodevelopmental disease marked by a variety of repetitive behaviors and social communication difficulties.PurposeTo develop a generalizable machine learning (ML) classifier that can accurately and effectively predict ASD in children.Material and MethodsThis paper makes use of neuroimaging data from the Autism Brain Imaging Data Exchange (ABIDE I and II) datasets through a combination of structural and functional magnetic resonance imaging data. Several ML models, such as Support Vector Machines (SVM), CatBoost, random forest (RF), and stack classifiers, were tested to demonstrate which model performs the best in ASD classification when used alongside a deep convolutional neural network.ResultsResults showed that stack classifier performed the best among the models, with the highest accuracy of 81.68%, sensitivity of 85.08%, and specificity of 79.13% for ABIDE I, and 81.34%, 83.61%, and 82.21% for ABIDE II, showing its superior ability to identify complex patterns in neuroimaging data. SVM performed poorly across all metrics, showing its limitations in dealing with high-dimensional neuroimaging data.ConclusionThe results show that the application of ML models, especially ensemble approaches like stack classifier, holds significant promise in improving the accuracy with which ASD is detected using neuroimaging and thus shows their potential for use in clinical applications and early intervention strategies.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251333974"},"PeriodicalIF":1.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958093","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}

引用次数: 0

A validation of ultrasound as a diagnostic tool for the detection of testicular torsion. 超声作为检测睾丸扭转的诊断工具的验证。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-04-15 DOI: 10.1177/02841851251331560

Nathalie Dahlgren, Gustav Sundström, Magnus Wagenius, Anders Navntoft, Charlotta Nilsson

{"title":"A validation of ultrasound as a diagnostic tool for the detection of testicular torsion.","authors":"Nathalie Dahlgren, Gustav Sundström, Magnus Wagenius, Anders Navntoft, Charlotta Nilsson","doi":"10.1177/02841851251331560","DOIUrl":"https://doi.org/10.1177/02841851251331560","url":null,"abstract":"BackgroundTesticular torsion (TT) is a scrotal emergency that needs urgent detection for successful treatment.PurposeTo investigate the diagnostic value of acute ultrasound and the possibility of more effective detection.Material and MethodsThis retrospective study included patients assessed with ultrasound for suspicion of TT between 2019 and 2023. Registration of parameters included symptoms, durations, ultrasound conclusions, and surgical outcome. Ultrasound assessment included inspection of the spermatic cord and testicular color Doppler signal. Sensitivity and specificity were presented with 95% confidence intervals (CIs) and symptoms with odds ratios (ORs).ResultsA total of 387 patients were included. Surgical exploration (SE) was carried out in 40 patients. TT was surgically confirmed in 23 patients. No missed cases of TT were detected. Spermatic cord rotation ≥180° showed a sensitivity of 100% (95% CI=86-100), specificity of 65% (95% CI=41-83), positive predictive value (PPV) of 79%, and negative predictive value (NPV) of 100%. Absent or reduced testicular color Doppler signal showed a sensitivity of 57% (95% CI=37-74), specificity of 77% (95% CI=53-90), PPV of 76%, and NPV of 57%. Sudden onset of pain (OR=9.44, 95% CI=2.10-42.35), earlier similar episodes (OR=6.71, 95% CI=2.27-19.89), and abdominal pain (OR=14.70, 95% CI=3.25-66.51) showed significant association with TT.ConclusionUltrasound, with focus on the spermatic cord, is reliable as a tool for the detection of TT. SE might be justified when cord rotation is ≥180°. These results can be used to develop and validate ultrasound guidelines for fast detection.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251331560"},"PeriodicalIF":1.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143962567","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}

引用次数: 0