Physical and Engineering Sciences in Medicine最新文献

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Artificial intelligence-based method for renal function automatic assessment of each kidney using plain computed tomography (CT) scans. 基于人工智能的肾脏功能自动评估方法,使用普通计算机断层扫描(CT)扫描每个肾脏。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-09 DOI: 10.1007/s13246-025-01651-w
Rongchang Guo, Wei Xia, Feng Xu, Yaotian Qian, Qiuyue Han, Daoying Geng, Xin Gao, Yiwei Wang
{"title":"Artificial intelligence-based method for renal function automatic assessment of each kidney using plain computed tomography (CT) scans.","authors":"Rongchang Guo, Wei Xia, Feng Xu, Yaotian Qian, Qiuyue Han, Daoying Geng, Xin Gao, Yiwei Wang","doi":"10.1007/s13246-025-01651-w","DOIUrl":"https://doi.org/10.1007/s13246-025-01651-w","url":null,"abstract":"<p><p>Separate renal function assessment is important in clinical decision making. The single-photon emission computed tomography is commonly used for the assessment although radioactive, tedious and of high cost. This study aimed to automatically assess the separate renal function using plain CT images and artificial intelligence methods, including deep learning-based automatic segmentation and radiomics modeling. We performed a retrospective study on 281 patients with nephrarctia or hydronephrosis from two centers (Training set: 159 patients from Center I; Test set: 122 patients from Center II). The renal parenchyma and hydronephrosis regions in plain CT images were automatically segmented using deep learning-based U-Net transformers (UNETR). Radiomic features were extracted from the two regions and used to build radiomic signature using the ElasticNet, then further combined with clinical characteristics using multivariable logistic regression to obtain an integrated model. The automatic segmentation was evaluated using the dice similarity coefficient (DSC). The mean DSC of automatic kidney segmentation based on UNETR was 0.894 and 0.881 in the training and test sets. The average time of automatic and manual segmentation was 3.4 s/case and 1477.9 s/case. The AUC of radiomic signature was 0.778 in the training set and 0.801 in the test set. The AUC of the integrated model was 0.792 and 0.825 in the training and test sets. It is feasible to assess the renal function of each kidney separately using plain CT and AI methods. Our method can minimize the radiation risk, improve the diagnostic efficiency and reduce the costs.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145253270","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
An automatic approach to assess biomechanical risk using machine learning algorithms and inertial sensors. 使用机器学习算法和惯性传感器自动评估生物力学风险的方法。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-09 DOI: 10.1007/s13246-025-01655-6
Giuseppe Prisco, Mario Cesarelli, Fabrizio Esposito, Antonella Santone, Paolo Gargiulo, Francesco Amato, Leandro Donisi
{"title":"An automatic approach to assess biomechanical risk using machine learning algorithms and inertial sensors.","authors":"Giuseppe Prisco, Mario Cesarelli, Fabrizio Esposito, Antonella Santone, Paolo Gargiulo, Francesco Amato, Leandro Donisi","doi":"10.1007/s13246-025-01655-6","DOIUrl":"https://doi.org/10.1007/s13246-025-01655-6","url":null,"abstract":"<p><p>Work-related musculoskeletal disorders represent a significant occupational health issue. These disorders encompass a range of conditions resulting from specific risk factors associate to manual material handling such as: intensity, repetition, and duration. Over the years, several observational methodologies have been developed to assess biomechanical risk, but their limits depend mainly on clinicians' subjective assessment. For this reason, wearable sensors coupled with artificial intelligence have recently been integrated in the occupational ergonomic field. This study aimed to develop a new technological methodology-based on machine learning algorithms and inertial wearable sensors-able to automatically discriminate biomechanical risk associated with lifting loads. Ten healthy volunteers were enrolled in this study performing specific weight-lifting tasks wearing two inertial measurement units on the sternum and lumbar region. The acquired inertial signals were appropriately processed to extract several features in the time-domain and frequency-domain which have been used as input to several machine learning algorithms. Excellent results in discriminating biomechanical risk classes were obtained reaching accuracies and areas under the receiver operating characteristic curve above 86% and 95%, respectively. In addition, the sternum emerged as the most informative body landmark, while the mean absolute value was identified as the most informative feature. Future investigations on a larger study population could confirm the potential of the proposed automatic procedure to be used in the workplace in combination with well-established methodologies.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145253278","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
Machine learning-assisted classification of lung cancer: the role of sarcopenia, inflammatory biomarkers, and PET/CT anatomical-metabolic parameters. 机器学习辅助肺癌分类:肌肉减少症、炎症生物标志物和PET/CT解剖代谢参数的作用。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-06 DOI: 10.1007/s13246-025-01650-x
Handan Tanyildizi-Kokkulunk, Goksel Alcin, Iffet Cavdar, Resit Akyel, Safak Yigit, Tuba Ciftci-Kusbeci, Gonul Caliskan
{"title":"Machine learning-assisted classification of lung cancer: the role of sarcopenia, inflammatory biomarkers, and PET/CT anatomical-metabolic parameters.","authors":"Handan Tanyildizi-Kokkulunk, Goksel Alcin, Iffet Cavdar, Resit Akyel, Safak Yigit, Tuba Ciftci-Kusbeci, Gonul Caliskan","doi":"10.1007/s13246-025-01650-x","DOIUrl":"https://doi.org/10.1007/s13246-025-01650-x","url":null,"abstract":"<p><p>Accurate differentiation between non-cancerous, benign, and malignant lung cancer remains a diagnostic challenge due to overlapping clinical and imaging characteristics. This study proposes a multimodal machine learning (ML) framework integrating positron emission tomography/computed tomography (PET/CT) anatomic-metabolic parameters, sarcopenia markers, and inflammatory biomarkers to enhance classification performance in lung cancer. A retrospective dataset of 222 patients was analyzed, including demographic variables, functional and morphometric sarcopenia indices, hematological inflammation markers, and PET/CT derived parameters such as maximum and mean standardized uptake value (SUVmax, SUVmean), metabolic tumor volume (MTV), total lesion glycolysis (TLG). Five ML algorithms-Logistic Regression, Multi-Layer Perceptron, Support Vector Machine, Extreme Gradient Boosting, and Random Forest-were evaluated using standardized performance metrics. Synthetic Minority Oversampling Technique was applied to balance class distributions. Feature importance analysis was conducted using the optimal model, and classification was repeated using the top 15 features. Among the models, Random Forest demonstrated superior predictive performance with a test accuracy of 96%, precision, recall, and F1-score of 0.96, and an average AUC of 0.99. Feature importance analysis revealed SUVmax, SUVmean, total lesion glycolysis, and skeletal muscle index as leading predictors. A secondary classification using only the top 15 features yielded even higher test accuracy (97%). These findings underscore the potential of integrating metabolic imaging, physical function, and biochemical inflammation markers in a non-invasive ML-based diagnostic pipeline. The proposed framework demonstrates high accuracy and generalizability and may serve as an effective clinical decision support tool in early lung cancer diagnosis and risk stratification.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233973","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
Accuracy of iodine quantification and CT numbers using split-filter dual-energy CT: influence of phantom diameter. 分离式滤波双能CT碘定量及CT数准确性:影影直径的影响。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-06 DOI: 10.1007/s13246-025-01658-3
Masato Kiriki, Maiko Kishigami, Toshiyuki Sakai, Takahiro Minamoto
{"title":"Accuracy of iodine quantification and CT numbers using split-filter dual-energy CT: influence of phantom diameter.","authors":"Masato Kiriki, Maiko Kishigami, Toshiyuki Sakai, Takahiro Minamoto","doi":"10.1007/s13246-025-01658-3","DOIUrl":"https://doi.org/10.1007/s13246-025-01658-3","url":null,"abstract":"<p><p>Dual-energy computed tomography (DECT) generates virtual monochromatic images (VMI) and material decomposition images (MDI), facilitating enhanced tissue contrast and quantitative material assessment. However, the accuracy of these measurements may be influenced by object size due to beam hardening and associated spectral changes. To evaluate the impact of object size on the accuracy of iodine quantification and CT numbers in virtual monochromatic images (VMI) using split-filter dual-energy CT (SFDE), and to compare its performance with sequential acquisition dual-energy CT (SADE). CT scans were performed on phantoms with diameters ranging from 16 to 36 cm using both SFDE and SADE techniques. Virtual monochromatic images and material decomposition images were generated. CT numbers and iodine concentrations were measured from embedded iodine rods, and relative errors were calculated using the 16 cm phantom as a reference. CT numbers in VMI obtained from SFDE exhibited increasing variability with larger phantom sizes, particularly at both low and high energy levels. Iodine quantification errors with SFDE exceeded 10% in all phantom sizes and reached approximately 60% in the 36 cm phantom. In contrast, SADE consistently maintained measurement errors within 10%. Object size significantly influences the accuracy of CT numbers and iodine quantification using SFDE, with larger phantoms showing marked overestimation. These results suggest that careful interpretation is necessary when applying SFDE-based quantitative imaging in patients with larger object sizes.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233926","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
Monitoring of respiration and cardiorespiratory interactions from multichannel seismocardiography signals. 多通道地震心动图信号监测呼吸和心肺相互作用。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-06 DOI: 10.1007/s13246-025-01657-4
Jessica Centracchio, Salvatore Parlato, Samuel E Schmidt, Paolo Bifulco, Daniele Esposito, Emilio Andreozzi
{"title":"Monitoring of respiration and cardiorespiratory interactions from multichannel seismocardiography signals.","authors":"Jessica Centracchio, Salvatore Parlato, Samuel E Schmidt, Paolo Bifulco, Daniele Esposito, Emilio Andreozzi","doi":"10.1007/s13246-025-01657-4","DOIUrl":"https://doi.org/10.1007/s13246-025-01657-4","url":null,"abstract":"<p><p>Seismocardiography (SCG) uses accelerometers to record cardiac-induced accelerations of the chest wall. Cardiorespiratory interactions cause changes in amplitude and morphology of the SCG signals. Accelerometers can also directly monitor respiration by tracking thoracic inclination. This study thoroughly investigated the influence of accelerometer placement on the monitoring accuracy of respiration and cardiorespiratory interactions from SCG signals. Simultaneous recordings acquired by 16 accelerometers and a respiration belt placed onto 9 subjects' chests were analyzed. Respiratory signals were estimated considering: (a) chest inclination, (b) amplitude modulation (AM) and (c) morphological changes of SCG signals for each sensor location. For the first time in literature, a continuous description of respiratory-induced changes in SCG morphology was obtained via a morphological similarity index (MSi). The performance of respiratory acts detection and inter-breath intervals (IBIs) estimation was evaluated against the concurrent reference respiration signal. High accuracy was achieved in all three kinds of respiratory signals, with average sensitivity and positive predictive value of 95.8% and 95.5% for chest inclination, 85.9% and 84.4% for AM, 94.3% and 95.7% for MSi. Moreover, IBIs measurements showed non-significant biases and limits of agreement of about ± 0.8 s for chest inclination and MSi, and ± 1 s for AM. Performance achieved by chest inclination and MSi appeared not much influenced by sensor location, while AM showed higher variations. Information on breathing and cardiorespiratory interactions can be accurately obtained via SCG on multiple sites on the chest.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145234016","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
Integrating dielectric properties analysis and machine learning for accurate liver cancer identification and infiltration depth prediction. 将介电特性分析与机器学习相结合,用于肝癌的准确识别和浸润深度预测。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-06 DOI: 10.1007/s13246-025-01656-5
Chunyou Ye, Xiao Wang, Wenxia Ju, Yaqing Jia, Xuefei Yu, Jijun Han
{"title":"Integrating dielectric properties analysis and machine learning for accurate liver cancer identification and infiltration depth prediction.","authors":"Chunyou Ye, Xiao Wang, Wenxia Ju, Yaqing Jia, Xuefei Yu, Jijun Han","doi":"10.1007/s13246-025-01656-5","DOIUrl":"https://doi.org/10.1007/s13246-025-01656-5","url":null,"abstract":"<p><p>The study of dielectric properties (DPs) reveals significant differences between normal and liver cancer tissues. Although the open-ended coaxial probe (OCP) method is widely used for measuring DPs, tumor infiltration depth affects the measurements, blurring dielectric thresholds and posing challenges for tissue identification based on DPs. This study combines DPs analysis with machine learning (ML) to achieve two key goals: (1) accurately distinguish tissue types, (2) reliably predict tumor infiltration depth. We simulated the DPs of liver cancer tissues at different infiltration depths, using a total of 90,000 samples with 181 frequency-point features. We evaluated the performance of common ML models, including artificial neural networks (ANN), support vector machines (SVM), and Bagging tree ensembles, and validated them using real tissue and phantom measurements. Additionally, the probe's detection depth was experimentally validated. Experimental results showed that all three ML models performed well in tissue identification and tumor infiltration depth prediction. SVM achieved the highest classification accuracy of 98.91%. For depth prediction, SVM and ANN yielded MAPE/RMSE of 0.1742/0.0673 and 0.1658/0.0730, respectively. The probe's effective detection range was 0.1-0.6 mm, essential for accurate measurement and prediction. The models also demonstrated strong performance in real tissue and phantom validations, with the Bagging ensemble achieving 100% classification accuracy and MAPE/RMSE of 0.1434/0.0614 for prediction. These findings confirm the method's reliability for precise tissue identification and infiltration depth estimation, supporting accurate tumor resection and improved patient outcomes.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233934","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 comparative evaluation of surface dose values: radiochromic film measurements versus computational predictions from different radiotherapy planning algorithms. 表面剂量值的比较评估:放射性致色膜测量与不同放射治疗计划算法的计算预测。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-02 DOI: 10.1007/s13246-025-01648-5
Ibrahim Kaptan, Yucel Akdeniz, Emine Burcin Ispir
{"title":"A comparative evaluation of surface dose values: radiochromic film measurements versus computational predictions from different radiotherapy planning algorithms.","authors":"Ibrahim Kaptan, Yucel Akdeniz, Emine Burcin Ispir","doi":"10.1007/s13246-025-01648-5","DOIUrl":"https://doi.org/10.1007/s13246-025-01648-5","url":null,"abstract":"<p><p>Accurate prediction of surface doses is crucial for clinical outcomes in radiotherapy. Surface dose distribution must be predicted accurately by calculation algorithms in the treatment planning system (TPS). This study aims to compare surface dose calculations from the Eclipse TPS with radiochromic film measurements to evaluate the reliability of these calculation algorithms. Measurements with radiochromic films were performed using 6 MV photon beams. Treatment plans for 3D conformal radiotherapy (3DCRT), intensity-modulated radiotherapy (IMRT), and volumetric arc therapy (VMAT) were generated on the TPS and calculated using various algorithms. Treatment plans were irradiated on Gafchromic EBT3 films with a PTW head and neck phantom. EBT3 films were compared to calculation algorithms via FilmQA™ Pro (version 7.0) software with multi-channel analysis. Dosimetric evaluations were statistically analyzed. Commercial calculation algorithms underestimated the surface dose in 3DCRT, IMRT, and VMAT treatment plans. For 3DCRT, the underestimations were 8.0% with the AAA algorithm and 8.7% with AXB. In VMAT, the underestimations were 10.2% with AAA and 12.9% with AXB. For IMRT, the underestimations were 6.6% with AAA and 7.3% with AXB. The AAA algorithm closely matched surface dose measurements among calculation methods. The dosimetric results indicate that both AAA and AXB algorithms, as implemented in the Eclipse™ TPS, tend to underestimate surface dose compared to EBT3 film measurements. Accurate knowledge of the dose in the superficial region is crucial to prevent acute skin reactions or to deliver an effective dose to superficial tumors in clinically significant cases. Therefore, our surface dose measurements offer more accurate evaluations, making Gafchromic EBT3 films suitable for such cases.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208174","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
FrnOBSA: fractional order-based spectral analysis for arrhythmia detection. FrnOBSA:基于分数阶谱分析的心律失常检测。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-02 DOI: 10.1007/s13246-025-01634-x
Shikha Singhal, Manjeet Kumar
{"title":"Fr<sup>n</sup>OBSA: fractional order-based spectral analysis for arrhythmia detection.","authors":"Shikha Singhal, Manjeet Kumar","doi":"10.1007/s13246-025-01634-x","DOIUrl":"https://doi.org/10.1007/s13246-025-01634-x","url":null,"abstract":"","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207794","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
Coplanar DCA-based hypofractionated stereotactic radiotherapy for very small brain metastasis from non-small cell lung cancer: treatment planning comparison with coplanar VMAT and preliminary clinical outcome. 基于共面dca的低分割立体定向放疗治疗非小细胞肺癌极小脑转移:治疗方案与共面VMAT的比较及初步临床结果
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-10-01 DOI: 10.1007/s13246-025-01640-z
Shipai Zhu, An Li, Jia Liu, Qin Deng, Qingfang Li, Jialu Lai, Lin Zhou
{"title":"Coplanar DCA-based hypofractionated stereotactic radiotherapy for very small brain metastasis from non-small cell lung cancer: treatment planning comparison with coplanar VMAT and preliminary clinical outcome.","authors":"Shipai Zhu, An Li, Jia Liu, Qin Deng, Qingfang Li, Jialu Lai, Lin Zhou","doi":"10.1007/s13246-025-01640-z","DOIUrl":"https://doi.org/10.1007/s13246-025-01640-z","url":null,"abstract":"<p><p>To assess the clinical outcome of single-arc coplanar dynamic conformal arc (C-DCA) in three-fraction hypofractionated stereotactic radiotherapy (3F-HSRT) for single very small brain metastasis (BM; gross tumor volume [GTV] ≤ 1 cm<sup>3</sup>) from non-small cell lung cancer (NSCLC) and to compare treatment planning with single-arc coplanar volumetric modulated arc therapy (C-VMAT). From December 2019 to May 2023, twenty NSCLC patients with single BM treated with 3F-HSRT (24-39 Gy/3f) using C-DCA were enrolled in this study. Each plan was replanned using C-VMAT, and relevant planning indices were compared. Clinical outcome was evaluated following C-DCA treatment. C-VMAT yielded a higher homogeneity index (1.41 vs. 1.16, p < 0.001) and GTV D<sub>98%</sub> (38.10 Gy vs. 32.72 Gy, p = 0.008), with slightly smaller normal brain tissue (NBT) V<sub>23Gy</sub>, and V<sub>21Gy</sub>. However, C-DCA offered 31.37% lower monitor units (p = 0.008) and 36.55% shorter beam on time (p = 0.007) while achieving a significantly higher gamma passing rate for the 2%/1 mm criterion (p = 0.001). As of October 2023, the median follow-up time was 9.2 months. The intracranial disease control rate was 70%, with a median intracranial progression-free survival of 11.4 (95% CI 4.5-18.3) months and a 1-year intracranial control rate of 45.4%. The intracranial local disease control rate was 95%. Only two irradiated lesions progressed at the end of follow-up. The cerebral radiation necrosis rate of all patients was 5%. For small BM, C-DCA provided nearly equivalent target coverage and NBT sparing to the C-VMAT while maintaining higher delivery efficiency and accuracy. C-DCA HSRT also provided good local control and limited toxicity.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145201797","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
An explainable machine learning (XAI) framework to enhance types of cardiovascular disease diagnosis and prognosis. 一个可解释的机器学习(XAI)框架,以提高心血管疾病的诊断和预后。
IF 2 4区 医学
Physical and Engineering Sciences in Medicine Pub Date : 2025-09-30 DOI: 10.1007/s13246-025-01653-8
K Adalarasu, B Raghavan, B Madhavan, Sivanandam Venkatesh, Rengarajan Amirtharajan
{"title":"An explainable machine learning (XAI) framework to enhance types of cardiovascular disease diagnosis and prognosis.","authors":"K Adalarasu, B Raghavan, B Madhavan, Sivanandam Venkatesh, Rengarajan Amirtharajan","doi":"10.1007/s13246-025-01653-8","DOIUrl":"https://doi.org/10.1007/s13246-025-01653-8","url":null,"abstract":"<p><p>The World Health Organisation 2024 report shows that Cardiovascular Disease (CVD) is the leading cause of death worldwide, estimated at 17.9 million deaths annually, and its mortality is about 32% of all deaths in the world. Of these, about 85% are myocardial infarctions and strokes. This study aims to diagnose heart disorders by providing early medical intervention to reduce the risks of abnormal heart structures. A data-driven model has been developed to achieve the above aim. The CVD and standard Electrocardiogram (ECG) datasets are extracted from PhysioNet in CSV format. This dataset comprises 305 samples of normal heart function, 15 samples of congestive heart failure, 32 samples of intracardiac atrial fibrillation, and 77 samples of supraventricular arrhythmia. The key steps include preprocessing the raw ECG data, extracting the relevant features, and introducing the input to the Machine Learning (ML) model for training. After preprocessing, ECG characteristic features, viz., mean heart interval, RR interval, p-wave amplitude, q-wave amplitude, r-wave amplitude, t-wave amplitude, and the derived features, namely, root mean square of successive difference (RMSSD), mean standard deviation of the normal-to-normal interval (SDDN), are extracted from the ECG signal and implemented using eXplainable Artificial Intelligence (XAI) methods to expound feature contributions. Various ML algorithms, including ensemble (EN), Naive Bayes (NB), and Support Vector Machine (SVM), are implemented for effectiveness. A tenfold cross-validation and performance are assessed using accuracy and recall analysis. Among these four models, SVM outperforms the other models and feature selection, achieving 99.5% accuracy when considering all features, 77% accuracy for the two derived features, and 99.5% accuracy for ECG wave characteristics features. To address the limitations, such as a small dataset and class imbalance, the Synthetic Minority Oversampling Technique (SMOTE) is applied to further enhance model performance. This study demonstrates the effectiveness of ML models, notably SVM, in predicting CVD abnormalities based on their ECG characteristics. These results suggest that future research should focus on refining methods to identify key features of ECG wave characteristics, potentially streamlining and speeding up the prediction of CVD in real-time. This work utilises XAI techniques to make the models more transparent, understandable and improve model accuracy of 99.8% for SVM. Furthermore, increasing model transparency with XAI might facilitate quicker clinical adoption for the diagnosis of heart disease.</p>","PeriodicalId":48490,"journal":{"name":"Physical and Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145201788","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
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