Radiography最新文献

英文中文

Corrigendum to “Diagnostic performance of diffusion-weighted imaging (DWI) in Legg-Calvé-Perthes disease: A systematic review and meta-analysis”<[Radiography 32 (1) (2026) 103242]> “弥散加权成像（DWI）对legg - calv<s:1> - perthes病的诊断性能：一项系统回顾和荟萃分析”的更正。

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2026-01-01 DOI: 10.1016/j.radi.2025.103283

S. Mohebbi , A. Mohebbi , S. Mohammadzadeh , A. Mohammadi , M.H. Nabian

引用次数: 0

Predicting hepatic enhancement in contrast-enhanced CT abdomen: A systematic review and meta-analysis of patient-specific factors. 腹部造影增强CT预测肝脏增强：对患者特异性因素的系统回顾和荟萃分析。

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2026-01-01 Epub Date: 2025-12-08 DOI: 10.1016/j.radi.2025.103264

J Garg, N C Panakkal, S Sukumar, R Kadavigere, V Thrivikraman, V Lakshmi R, S Shanbhag

Introduction: Achieving optimal hepatic enhancement in contrast-enhanced computed tomography (CECT) is crucial for accurate diagnosis but is influenced by patient-specific factors. Fixed-dose contrast protocols often result in variability, particularly in individuals with extreme body sizes (e.g., obese patients with BMI >30 kg/m² or very low body weight). Body size parameters: total body weight (TBW), lean body weight (LBW), body surface area (BSA), and body mass index (BMI) have been proposed to optimize dosing, yet no consensus exists.

Methods: A systematic review and meta-analysis were conducted following PRISMA guidelines. PubMed, Web of Science, Scopus, and Embase were searched (2000-2025) for studies evaluating the correlation between body parameters and hepatic enhancement during the portal venous phase in adults undergoing abdominal CECT. Correlation coefficients were extracted and pooled using a random-effects model, with heterogeneity assessed via I² statistics.

Results: Seven studies were included in the meta-analysis. Pooled correlations revealed significant negative associations for TBW (r = -0.604, p < 0.001), BSA (r = -0.647, p < 0.001), and BMI (r = -0.466, p < 0.001). LBW showed a non-significant association (r = -0.379, p = 0.269). Heterogeneity was high for all parameters (I² = 72.7-99 %). BSA and TBW consistently demonstrated the strongest correlations, while LBW results varied due to methodological differences.

Conclusion: Both TBW and BSA are strong predictors of hepatic enhancement, with BSA offering greater physiological relevance. LBW, while theoretically optimal, requires standardized measurement methods.

Implications for practice: Weight- or BSA-based dosing should be considered over fixed-dose protocols to achieve consistent hepatic enhancement. Incorporating standardized LBW estimation may further improve image quality and patient safety. Future research should focus on methodological consistency and diverse population validation.

在对比增强计算机断层扫描（CECT）中获得最佳的肝脏增强对准确诊断至关重要，但受患者特异性因素的影响。固定剂量对比方案通常会导致变异，特别是在体型极端的个体中（例如，BMI为30 kg/m2或体重非常低的肥胖患者）。身体尺寸参数：总体重（TBW）、瘦体重（LBW）、体表面积（BSA）和身体质量指数（BMI）被提出用于优化给药，但尚未达成共识。方法：根据PRISMA指南进行系统评价和荟萃分析。检索了PubMed、Web of Science、Scopus和Embase(2000-2025)，以评估接受腹部CECT的成人门静脉期身体参数与肝脏增强之间的相关性。使用随机效应模型提取相关系数并汇总，通过I2统计量评估异质性。结果：meta分析纳入了7项研究。合并相关性显示TBW （r = -0.604, p < 0.001）、BSA （r = -0.647, p < 0.001）和BMI （r = -0.466, p < 0.001）呈显著负相关。LBW无显著相关性（r = -0.379, p = 0.269）。所有参数的异质性都很高（I2 = 72.7- 99%）。BSA和TBW始终表现出最强的相关性，而LBW的结果由于方法的差异而有所不同。结论：TBW和BSA都是肝脏增强的有力预测指标，其中BSA具有更大的生理相关性。LBW虽然理论上是最佳的，但需要标准化的测量方法。实践意义：应考虑以体重或bsa为基础给药，而不是固定剂量方案，以获得一致的肝脏增强。结合标准化的LBW估计可以进一步提高图像质量和患者安全。未来的研究应侧重于方法的一致性和多样化的人群验证。

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引用次数: 0

Aims & Scope / Editorial Board 目标与范围/编委会

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2026-01-01 DOI: 10.1016/S1078-8174(26)00002-7

引用次数: 0

Letter to the editor: Variations in the atlantoaxial joint detected by computed tomography in control patients 给编辑的信：对照患者的计算机断层扫描检测到寰枢关节的变异。

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2026-01-01 DOI: 10.1016/j.radi.2025.103272

X. Zhou , Q. Chen , H. Jiang, H. Jiang, P. Luo

引用次数: 0

Role of 18F-FDG PET/CT radiomics in predicting lymph node metastasis and prognosis in oral squamous cell carcinoma 18F-FDG PET/CT放射组学在预测口腔鳞癌淋巴结转移及预后中的作用

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-31 DOI: 10.1016/j.radi.2025.103294

Z.-Q. Zhang , W.-J. Wu , Y.-W. Zhong , P.-G. An , X. Hu , J. Zhang

Introduction

This study aimed to develop and validate 18F-FDG positron emission tomography/computed tomography (PET/CT) radiomics-based models for predicting cervical lymph node metastasis (LNM) and prognosis (overall survival [OS] and disease-free survival [DFS]) in patients with oral squamous cell carcinoma (OSCC).

Methods

We retrospectively enrolled 130 patients with OSCC who underwent surgery. A total of 107 radiomics features were extracted from the primary tumor. Least absolute shrinkage and selection operator (LASSO) regression and random forest algorithms were applied for feature selection. Multivariable logistic regression (for LNM) and Cox regression (for OS/DFS) models integrating selected radiomics and clinical features were constructed. Model performance was evaluated using receiver operating characteristic (ROC) curves, concordance index (C-index), calibration curves, and decision curve.

Results

The LNM diagnostic model, which incorporated three radiomics features (GLCM_Correlation, GLCM_Imc1, and GLCM_JointEnergy) and two clinical features (cT and cN), achieved an area under the curve (AUC) of 0.856 and an accuracy of 81.5 %, outperforming conventional visual PET/CT assessment (accuracy = 74.6 %). For prognosis, the combined radiomic-clinical models for OS and DFS yielded C-indexes of 0.716 and 0.683, respectively, both significantly higher than those of TNM stage (0.630 and 0.594). Both prognostic models successfully stratified patients into high- and low-risk groups with significant survival differences (p < 0.01).

Conclusion

PET/CT radiomics significantly improved the diagnostic accuracy for cervical LNM and possessed the potential as a supplementary component for the TNM staging system.

Implications for practice

PET/CT radiomics possesses considerable potential for clinical translation in lymph node diagnosis and prognosis prediction.

本研究旨在建立和验证基于18F-FDG正电子发射断层扫描/计算机断层扫描（PET/CT）放射组学的模型，用于预测口腔鳞状细胞癌（OSCC）患者颈部淋巴结转移（LNM）和预后（总生存期[OS]和无病生存期[DFS]）。方法回顾性纳入130例接受手术治疗的OSCC患者。从原发肿瘤中提取了107个放射组学特征。采用最小绝对收缩和选择算子（LASSO）回归和随机森林算法进行特征选择。构建多变量logistic回归（用于LNM）和Cox回归（用于OS/DFS）模型，整合选定的放射组学和临床特征。采用受试者工作特征（ROC）曲线、一致性指数（C-index）、校准曲线和决策曲线评价模型的性能。结果LNM诊断模型包含3个放射组学特征（GLCM_Correlation、GLCM_Imc1和glcm_jointerergy）和2个临床特征（cT和cN），曲线下面积（AUC）为0.856，准确率为81.5%，优于常规PET/ cT视觉评估（准确率为74.6%）。预后方面，放射学-临床联合模型对OS和DFS的c指数分别为0.716和0.683，均显著高于TNM期的c指数（0.630和0.594）。两种预后模型都成功地将患者分为高危组和低危组，并存在显著的生存差异（p < 0.01）。结论pet /CT放射组学可显著提高宫颈LNM的诊断准确性，具有作为TNM分期系统的补充组成部分的潜力。pet /CT放射组学在淋巴结诊断和预后预测方面具有相当大的临床转化潜力。

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引用次数: 0

Inter-observer variation in radiation oncology contouring: A scoping review of contour comparison methods, and reporting of impact on the organ at risk plan dose variations 放射肿瘤学轮廓的观察者间差异：轮廓比较方法的范围审查，并报告对危险器官的影响计划剂量变化

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-31 DOI: 10.1016/j.radi.2025.103295

C. Chamunyonga , K. Mengersen , C. Hargrave

Objectives

Inaccuracies in target and organs at risk (OAR) contouring can cause dosimetric uncertainties. This scoping review assessed the use of geometric indices (GIs) in evaluating contouring accuracy and reporting OAR dose variations.

Key findings

Twenty-five (25) full-text articles were included in this review, comprising 22 primary studies and 3 review papers. Most studies focused on evaluating auto-segmentation tools (n = 9). The Dice similarity coefficient (DICE) and Hausdorff distances (HDs) were the most commonly used GIs for contour comparisons. OAR dose variations were primarily assessed using dose-volume histogram metrics, particularly the mean OAR dose, with some studies also employing radiobiological metrics such as normal tissue complication probabilities (NTCPs) and equivalent uniform doses (EUDs). Statistical methods, such as Spearman’s and Pearson’s correlations and linear regression, were frequently used to examine relationships between GI values and dose variation.

Conclusion

Future inter-observer variation studies should include thorough reporting of treatment planning parameters that might affect optimisation, calculation, and dose reporting to enable comparison of results across studies.

Implications for practice

The article highlights the need for standardisation in reporting dose variations. It also provides researchers and clinicians with insight into current practices in the use of geometric indices and statistical methods for evaluating contouring variation.

目的靶器官和危险器官（OAR）轮廓的不准确会导致剂量学的不确定性。本范围审查评估了几何指数（GIs）在评估轮廓准确性和报告OAR剂量变化方面的使用。本综述纳入了25篇全文文章，包括22篇主要研究和3篇综述论文。大多数研究集中于评估自动分割工具（n = 9）。Dice相似系数（Dice）和Hausdorff距离（HDs）是最常用的等高线比较GIs。OAR剂量变化的评估主要使用剂量-体积直方图指标，特别是平均OAR剂量，一些研究还使用放射生物学指标，如正常组织并发症概率（NTCPs）和等效均匀剂量（EUDs）。统计方法，如Spearman’s和Pearson’s相关和线性回归，经常用于检查GI值与剂量变化之间的关系。结论：未来的观察者间变异研究应全面报告可能影响优化、计算和剂量报告的治疗计划参数，以便对研究结果进行比较。这篇文章强调了报告剂量变化的标准化的必要性。它还为研究人员和临床医生提供了深入了解当前使用几何指数和统计方法评估轮廓变化的实践。

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引用次数: 0

Effect of iodinated contrast media enhancement on size-specific dose estimates in emergency thoracic CT 碘化造影剂增强对急诊胸部CT大小特异性剂量估计的影响

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-31 DOI: 10.1016/j.radi.2025.103308

A. Khallouqi , H. Sekkat , A. Halimi , Y. Madkouri , O. El Rhazouani

Introduction

Accurate estimation of patient radiation dose is crucial in emergency computed tomography (CT), where rapid multiphase imaging is routine. The Size-Specific Dose Estimate (SSDE) incorporates patient size using the water-equivalent diameter (Dw), but standard calculations assume patient size remains constant across scan phases. Contrast administration, however, modifies tissue attenuation and may alter both Dw and SSDE.

Methods

A retrospective analysis of 100 consecutive emergency thoracic CT examinations was conducted, each including non-contrast (C–) and contrast-enhanced (C+) phases. Automatic tube-current modulation was applied for all acquisitions. From 22,000 slice-level observations, the scanner-reported volume CT dose index (CTDIvol), Dw, size-specific conversion factor (f), and SSDE were calculated using AAPM-recommended equations. Phase-wise comparisons were performed using paired t-tests.

Results

Mean SSDE increased from 11.64 ± 1.11 mGy (C–) to 11.96 ± 1.17 mGy (C+), a statistically significant 2.7 % rise (p < 0.001). The apparent cause was a 3.4 % decrease in Dw (21.98 mm → 21.24 mm, p < 0.001), reflecting higher post-contrast attenuation interpreted as smaller patient size. This led to a 2.8 % increase in f, further amplified by the scanner's compensatory increase in tube current.

Conclusion

SSDE is a dynamic rather than static parameter, increasing systematically during contrast-enhanced thoracic CT because of both algorithmic artefacts and real modulation of scanner output. Reliance on a single averaged SSDE across multiphase protocols may underestimate patient dose.

Implications for practice

Phase-specific SSDE reporting provides a more accurate and transparent assessment of patient radiation exposure in emergency CT. Integrating automated, phase-resolved SSDE computation into dose-management systems would enhance clinical decision-making, support protocol optimization, and improve adherence to the ALARA principle in daily radiology practice.

在急诊计算机断层扫描（CT）中，准确估计病人的辐射剂量是至关重要的，在急诊计算机断层扫描中，快速多相成像是常规的。尺寸特定剂量估算（SSDE）使用水当量直径（Dw）纳入患者尺寸，但标准计算假设患者尺寸在扫描阶段保持恒定。然而，造影剂可以改变组织衰减，并可能改变Dw和SSDE。方法回顾性分析连续100例急诊胸部CT检查结果，各检查包括非对比期（C -）和增强期（C+）。自动管电流调制应用于所有采集。根据22,000个切片水平的观察结果，使用aapm推荐的公式计算扫描仪报告的体积CT剂量指数（CTDIvol）、Dw、尺寸特异性转换因子(f)和SSDE。采用配对t检验进行阶段性比较。结果平均SSDE由11.64±1.11 mGy （C -）上升至11.96±1.17 mGy (C+)，上升2.7%，差异有统计学意义（p < 0.001）。明显的原因是Dw下降3.4% (21.98 mm→21.24 mm, p < 0.001)，反映了更高的对比后衰减解释为更小的患者尺寸。这导致f增加2.8%，扫描仪的管电流补偿性增加进一步放大。结论ssde是一个动态参数，而不是静态参数，在胸部CT增强过程中，由于算法伪影和扫描仪输出的真实调制，ssde会系统地增加。在多期方案中依赖单一平均SSDE可能会低估患者的剂量。实践意义特定阶段的SSDE报告为急诊CT患者辐射暴露提供了更准确和透明的评估。在剂量管理系统中集成自动化的、分相的SSDE计算将增强临床决策，支持方案优化，并在日常放射学实践中提高对ALARA原则的遵守。

{"title":"Effect of iodinated contrast media enhancement on size-specific dose estimates in emergency thoracic CT","authors":"A. Khallouqi , H. Sekkat , A. Halimi , Y. Madkouri , O. El Rhazouani","doi":"10.1016/j.radi.2025.103308","DOIUrl":"10.1016/j.radi.2025.103308","url":null,"abstract":"<div><h3>Introduction</h3><div>Accurate estimation of patient radiation dose is crucial in emergency computed tomography (CT), where rapid multiphase imaging is routine. The Size-Specific Dose Estimate (SSDE) incorporates patient size using the water-equivalent diameter (Dw), but standard calculations assume patient size remains constant across scan phases. Contrast administration, however, modifies tissue attenuation and may alter both Dw and SSDE.</div></div><div><h3>Methods</h3><div>A retrospective analysis of 100 consecutive emergency thoracic CT examinations was conducted, each including non-contrast (C–) and contrast-enhanced (C+) phases. Automatic tube-current modulation was applied for all acquisitions. From 22,000 slice-level observations, the scanner-reported volume CT dose index (CTDIvol), Dw, size-specific conversion factor (f), and SSDE were calculated using AAPM-recommended equations. Phase-wise comparisons were performed using paired <em>t</em>-tests.</div></div><div><h3>Results</h3><div>Mean SSDE increased from 11.64 ± 1.11 mGy (C–) to 11.96 ± 1.17 mGy (C+), a statistically significant 2.7 % rise (<em>p</em> < 0.001). The apparent cause was a 3.4 % decrease in Dw (21.98 mm → 21.24 mm, <em>p</em> < 0.001), reflecting higher post-contrast attenuation interpreted as smaller patient size. This led to a 2.8 % increase in <em>f</em>, further amplified by the scanner's compensatory increase in tube current.</div></div><div><h3>Conclusion</h3><div>SSDE is a dynamic rather than static parameter, increasing systematically during contrast-enhanced thoracic CT because of both algorithmic artefacts and real modulation of scanner output. Reliance on a single averaged SSDE across multiphase protocols may underestimate patient dose.</div></div><div><h3>Implications for practice</h3><div>Phase-specific SSDE reporting provides a more accurate and transparent assessment of patient radiation exposure in emergency CT. Integrating automated, phase-resolved SSDE computation into dose-management systems would enhance clinical decision-making, support protocol optimization, and improve adherence to the ALARA principle in daily radiology practice.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"32 2","pages":"Article 103308"},"PeriodicalIF":2.8,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884660","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}

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Comment on "Convolutional neural network application for automated lung cancer detection on chest CT using google AI studio". 点评“基于b谷歌AI studio的卷积神经网络在胸部CT肺癌自动检测中的应用”

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-27 DOI: 10.1016/j.radi.2025.103293

I A Bolaños Bermúdez

引用次数: 0

Evaluating the shoulder toolkit impact on usability, workload, and confidence in novice and expert ultrasound users 评估肩工具包对可用性的影响，工作量，以及新手和专家超声用户的信心

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-26 DOI: 10.1016/j.radi.2025.103291

S. Duhig , A. McKenzie , T. Lakiang , D. Turner

Introduction

Point-of-care ultrasound (POCUS) is widely used for musculoskeletal assessment, yet novice users often lack confidence and consistency. The Shoulder Toolkit (STK) was developed to provide a structured framework for shoulder ultrasound. This study compared the STK with traditional methods among novice and expert users.

Methods

Thirty-three participants (17 novices, 16 experts) performed standardized shoulder examinations using both traditional methods and the STK. Outcomes included participant confidence, satisfaction, usability (System Usability Scale, SUS), user experience (UXS), net promoter score (NPS), workload (NASA-TLX), and image quality (5-point scale). Assessments were conducted pre- and post-examination.

Results

Novices demonstrated significant confidence gains with the STK compared to both pre-examination and traditional methods (p < 0.001). Novice satisfaction was higher with the STK (p = 0.002), whereas experts preferred traditional methods (p = 0.023). Usability increased for all users with the STK (p = 0.003), with novices showing marked improvements (p < 0.001). Experts rated traditional usability higher than novices (p = 0.010), though no group differences were observed for the STK. Novices expressed stronger preference for the STK across learnability, efficiency, utility, and satisfaction (all p < 0.005), with higher likelihood to recommend (p = 0.003). NASA-TLX scores indicated lower mental demand with the STK (p < 0.001), alongside performance and frustration differences between novices and experts under traditional and STK conditions. Experts achieved higher image quality scores than novices (p < 0.001).

Conclusion

The STK enhanced novice confidence, satisfaction, usability, and reduced workload compared to traditional methods, while experts favored traditional examination.

Implications for practice

The STK offers a structured, user-friendly approach that may accelerate novice skill acquisition and promote consistency in musculoskeletal ultrasound, supporting wider adoption of POCUS in clinical practice.

医疗点超声（POCUS）广泛用于肌肉骨骼评估，但新手用户往往缺乏信心和一致性。肩部工具包（STK）的开发是为了提供肩部超声的结构化框架。本研究在新手和专家用户中比较了STK与传统方法。方法33名参与者（17名新手，16名专家）采用传统方法和STK方法进行标准化肩部检查，结果包括参与者信心、满意度、可用性（系统可用性量表，SUS）、用户体验（UXS）、净推荐值（NPS）、工作量（NASA-TLX）和图像质量（5分制）。评估分别在考试前后进行。结果与预检和传统方法相比，新手对STK的信心有了显著提高（p < 0.001）。新手对STK的满意度更高（p = 0.002），而专家更喜欢传统方法（p = 0.023）。使用STK的所有用户的可用性都有所提高（p = 0.003），新手表现出明显的改善（p < 0.001）。专家对传统可用性的评价高于新手（p = 0.010），尽管在STK方面没有观察到组间差异。新手在可学习性、效率、效用和满意度方面对STK表现出更强的偏好（p < 0.005），并且推荐的可能性更高（p = 0.003）。NASA-TLX分数表明，在STK条件下，新手和专家在传统条件和STK条件下的表现和挫败感存在差异（p < 0.001）。专家的图像质量得分高于新手（p < 0.001）。结论与传统考试方法相比，STK提高了新手的自信心、满意度、可用性，减少了工作量，而专家更青睐传统考试方法。STK提供了一种结构化的、用户友好的方法，可以加速新手技能的习得，促进肌肉骨骼超声的一致性，支持POCUS在临床实践中的广泛采用。

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引用次数: 0

Reply to: "comment on 'convolutional neural network application for automated lung cancer detection on chest CT using Google AI Studio'". 回复：“关于“b谷歌AI Studio在胸部CT上卷积神经网络用于肺癌自动检测”的评论”。

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography

Pub Date : 2025-12-26 DOI: 10.1016/j.radi.2025.103296

Z Aljneibi, S Almenhali, L Lanca

引用次数: 0

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