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Clinical decision-making in bone cancer care management and forecast of ICU needs based on computed tomography 骨癌护理管理的临床决策和基于计算机断层扫描的重症监护室需求预测
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-11-02 DOI: 10.1016/j.jbo.2024.100646
Huan Xu , Qunfang Zhao , Xiaoyan Miao , Lijun Zhu , Junping Wang

Objective

This study aimed to evaluate the role of computed tomography (CT) imaging in the diagnosis and management of bone cancer during periods of limited access to histopathological testing. We aimed to determine the correlation between CT severity levels and subsequent patient management and care decisions, adhering to established oncological CT reporting guidelines.

Methodology

A retrospective analysis was conducted on 60 symptomatic patients from January 2021 to January 2024. The cohort included patients aged between 50 and 86 years, with a mean age of 68 years, and 75 % were male. All patients had their bone cancer diagnosis confirmed through histopathological examination, and CT imaging was used as the reference method. The analysis involved assessing the correlation between CT severity scores and patient management, including ICU admissions.

Results

The study found that CT imaging demonstrated a sensitivity of 92.6% in diagnosing bone cancer, with accuracy increasing to 97.6% in cases with high-probability CT characteristics. CT specificity also showed a consistent rise. Osteolytic lesions were the predominant finding, detected in 85.9% of cases. Among these, 88% exhibited engagement across multiple skeletal regions, 92.8% showed bilateral distribution, and 92.8% presented with peripheral involvement. In ICU patients, bone consolidation was observed in 81.5% of cases and was predominant in 66.7% of the ICU cohort. Additionally, ICU patients had significantly higher CT severity scores, with scores exceeding 14 being notably prevalent.

Conclusions

During the management period of bone cancer at our hospital, characteristic features on CT imaging facilitated swift and sensitive investigation. Two distinct CT phenotypes, associated with the primary osteolytic phenotype and severity score, emerged as valuable indicators for assessing the severity of the disease, particularly during ICU care. These findings highlight the diverse manifestations and severity levels encountered in bone cancer patients and underscore the importance of CT imaging in their diagnosis and management.
本研究旨在评估计算机断层扫描(CT)成像在组织病理学检测受限期间骨癌诊断和管理中的作用。我们旨在确定 CT 严重程度与后续患者管理和护理决策之间的相关性,同时遵守既定的肿瘤 CT 报告指南。患者年龄在 50 至 86 岁之间,平均年龄为 68 岁,其中 75% 为男性。所有患者均通过组织病理学检查确诊为骨癌,并以 CT 成像作为参考方法。结果研究发现,CT 成像在诊断骨癌方面的灵敏度为 92.6%,在具有高概率 CT 特征的病例中,准确率上升到 97.6%。CT 特异性也呈持续上升趋势。溶骨性病变是最主要的发现,在 85.9% 的病例中被检测到。其中,88%的病例表现为多个骨骼区域受累,92.8%的病例表现为双侧分布,92.8%的病例表现为外周受累。在重症监护室患者中,81.5%的病例观察到骨质增生,66.7%的重症监护室患者以骨质增生为主。此外,ICU 患者的 CT 严重程度评分明显较高,超过 14 分的患者明显增多。两种不同的 CT 表型与原发性溶骨表型和严重程度评分相关,是评估疾病严重程度的重要指标,尤其是在重症监护室护理期间。这些发现突显了骨癌患者的不同表现和严重程度,并强调了 CT 成像在诊断和管理中的重要性。
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引用次数: 0
A novel adjunctive diagnostic method for bone cancer: Osteosarcoma cell segmentation based on Twin Swin Transformer with multi-scale feature fusion 一种新型骨癌辅助诊断方法:基于双斯温变换器和多尺度特征融合的骨肉瘤细胞分割技术
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-11-01 DOI: 10.1016/j.jbo.2024.100647
Tingxi Wen, Binbin Tong, Yuqing Fu, Yunfeng Li, Mengde Ling, Xinwen Chen

Background

Osteosarcoma, the most common primary bone tumor originating from osteoblasts, poses a significant challenge in medical practice, particularly among adolescents. Conventional diagnostic methods heavily rely on manual analysis of magnetic resonance imaging (MRI) scans, which often fall short in providing accurate and timely diagnosis. This underscores the critical need for advancements in medical imaging technologies to improve the detection and characterization of osteosarcoma.

Methods

In this study, we sought to address the limitations of current diagnostic approaches by leveraging Hoechst-stained images of osteosarcoma cells obtained via fluorescence microscopy. Our primary objective was to enhance the segmentation of osteosarcoma cells, a crucial step in precise diagnosis and treatment planning. Recognizing the shortcomings of existing feature extraction networks in capturing detailed cellular structures, we propose a novel approach utilizing a twin swin transformer architecture for osteosarcoma cell segmentation, with a focus on multi-scale feature fusion.

Results

The experimental findings demonstrate the effectiveness of the proposed Twin Swin Transformer with multi-scale feature fusion in significantly improving osteosarcoma cell segmentation. Compared to conventional techniques, our method achieves superior segmentation performance, highlighting its potential utility in clinical settings.

Conclusion

The development of our Twin Swin Transformer with multi-scale feature fusion method represents a significant advancement in medical imaging technology, particularly in the field of osteosarcoma diagnosis. By harnessing advanced computational techniques and leveraging high-resolution imaging data, our approach offers enhanced accuracy and efficiency in osteosarcoma cell segmentation, ultimately facilitating better patient care and clinical decision-making.
背景骨肉瘤是起源于成骨细胞的最常见的原发性骨肿瘤,是医疗实践中的一大挑战,尤其是在青少年中。传统的诊断方法严重依赖于对磁共振成像(MRI)扫描的人工分析,往往无法提供准确及时的诊断。方法在这项研究中,我们试图利用通过荧光显微镜获得的骨肉瘤细胞的 Hoechst 染色图像来解决当前诊断方法的局限性。我们的主要目标是加强骨肉瘤细胞的分割,这是精确诊断和治疗计划的关键步骤。认识到现有特征提取网络在捕捉详细细胞结构方面的不足,我们提出了一种利用双漩涡变换器架构进行骨肉瘤细胞分割的新方法,重点是多尺度特征融合。与传统技术相比,我们的方法实现了更优越的分割性能,凸显了其在临床环境中的潜在用途。结论我们开发的多尺度特征融合 Twin Swin Transformer 方法代表了医学成像技术的重大进步,尤其是在骨肉瘤诊断领域。通过利用先进的计算技术和高分辨率成像数据,我们的方法提高了骨肉瘤细胞分割的准确性和效率,最终促进了更好的患者护理和临床决策。
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引用次数: 0
Progression of vertebral fractures in metastatic melanoma and non-small cell lung cancer patients given immune checkpoint inhibitors 服用免疫检查点抑制剂的转移性黑色素瘤和非小细胞肺癌患者椎体骨折的进展情况
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-11 DOI: 10.1016/j.jbo.2024.100642
Marco Meazza Prina , Andrea Alberti , Valeria Tovazzi , Marco Ravanelli , Greta Schivardi , Alice Baggi , Luca Ammoni , Lucilla Guarneri , Francesca Salvotti , Manuel Zamparini , Davide Farina , Margherita Parolise , Salvatore Grisanti , Alfredo Berruti

Introduction

The immune system mediates important effects on bone metabolism, but little has been done to understand immunotherapy’s role in this interaction. This study aims to describe and identify risk factors for the occurrence and/or exacerbation of vertebral fractures (vertebral fracture progression) during immune checkpoint inhibitors (ICIs).

Methods

We conducted an observational, retrospective, monocentric study. We collected data on melanoma and NSCLC patients, treated with first-line ICIs at the Medical Oncology Department ASST Spedali Civili of Brescia, between January 2015 and November 2021, and with a median follow-up of 20.1 (6–36) months. We collected data on patients, diseases, immune-related adverse events, and cortico-steroid therapy initiated on concomitant ICIs.

Results

We identified 135 patients, 65 (48.2 %) with locally advanced/metastatic melanoma and 70 (51.8 %) with locally advanced/metastatic non-small cell lung cancer (NSCLC). Twenty-one (15.6 %) patients already had an asymptomatic vertebral fracture at baseline before starting ICIs in monotherapy. A total of ten patients, or 7.4 %, had a vertebra fracture progression defined as a new vertebral fracture or a worsening of a previous fracture. There was a strong relation between the steroid therapy and irAEs with vertebra fracture progression [OR (95 % CI) 8.1 (3.7–17.8) p-value < 0.001] in univariable analysis. However, only steroid therapy resulted to be an independent risk factor [8.260 (95 % CI 0.909–75.095); p-value 0.061] at the multivariable analysis.

Conclusion

Concurrent steroid therapy in patients receiving immunotherapy exposes them to a high risk of fractures due to skeletal fragility. The use of bone resorption inhibitors should be considered in these patients to prevent these adverse events.
导言免疫系统对骨代谢有重要影响,但人们对免疫疗法在这种相互作用中的作用了解甚少。本研究旨在描述和识别在使用免疫检查点抑制剂(ICIs)期间发生和/或加重椎体骨折(椎体骨折进展)的风险因素。我们收集了2015年1月至2021年11月期间在布雷西亚ASST Spedali Civili肿瘤内科接受一线ICIs治疗的黑色素瘤和NSCLC患者的数据,中位随访时间为20.1(6-36)个月。我们收集了有关患者、疾病、免疫相关不良事件以及在使用 ICIs 的同时开始皮质类固醇治疗的数据。结果 我们发现了 135 名患者,其中 65 人(48.2%)患有局部晚期/转移性黑色素瘤,70 人(51.8%)患有局部晚期/转移性非小细胞肺癌(NSCLC)。21名患者(15.6%)在开始接受 ICIs 单药治疗前,基线已有无症状脊椎骨折。共有 10 名患者(占 7.4%)出现了脊椎骨折进展,即新的脊椎骨折或之前的骨折恶化。在单变量分析中,类固醇治疗和irAEs与椎体骨折进展之间存在密切关系[OR (95 % CI) 8.1 (3.7-17.8) p-value<0.001]。然而,在多变量分析中,只有类固醇治疗是一个独立的风险因素[8.260 (95 % CI 0.909-75.095);p-value 0.061]。这些患者应考虑使用骨吸收抑制剂来预防这些不良事件的发生。
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引用次数: 0
Is surgery without curettage effective for periacetabular Metastasis? Insights from a survival study of 93 patients 不进行刮宫的手术是否能有效治疗髋臼周围转移瘤?93 例患者生存研究的启示
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-10 DOI: 10.1016/j.jbo.2024.100643
Thomas Amouyel , Marie-Hélène Vieillard , Alain Duhamel , Carlos Maynou , Martine Duterque-Coquillaud , Cyrielle Dumont

Background

The main aim of this study was to analyse the 6-month survival rates in peri-acetabular metastasis patients undergoing total hip arthroplasty (THA) with an acetabular cage and without curettage. The secondary objectives were to analyse the global survival rates, the factors influencing patient survival and to evaluate mechanical complication rates after THA.

Methods

This study was carried out on a cohort of 93 consecutive patients who underwent THA with an acetabular cage without curettage for acetabular metastasis or multiple myeloma lesions between 2010 and 2020. The National Death Registry was consulted to obtain the exact date of death of the patients; the minimum follow-up time was 2 years.

Results

The 6-month survival rate for all types of cancer was 78 % [68 – 85], the 1-year survival rate was 66 % [55 – 74], and the 5-year survival rate was 26 % [17 – 36]. The median overall survival for the cohort was 24.37 months [16.10 – 32.63]. The mean overall survival was 46.02 months [32.89 – 59.16]. At last contact, 86 % of the operated patients were walking again.
No patient died from surgery. The ECOG performance status score, the number of bone metastatic sites, the presence of visceral metastases and the number of lines of systemic therapy undertaken prior to surgery were negative survival factors. Three patients (3.2 %) had early prosthetic dislocation, 2 patients (2.2 %) showed aseptic loosening of her partial hip implant after 10 and 11 years respectively and 4 patients (4.3 %) had an early infection treated by debridement, antibiotics and implant retention to control the infection. During the follow-up period, no new femoral metastases were detected in any patient.

Conclusion

Surgery without curettage is an effective treatment for periacetabular metastasis. It gives reliable results, regardless of the type of acetabular lesion, allowing most patients to walk again and does not modify the patient’s survival.
背景本研究的主要目的是分析髋臼周围转移瘤患者在接受全髋关节置换术(THA)时使用髋臼笼和不进行刮宫术的 6 个月存活率。本研究的对象是 2010 年至 2020 年间因髋臼转移或多发性骨髓瘤病变而接受全髋关节置换术(THA)并使用髋臼笼且未进行刮治的 93 例连续患者。结果 所有类型癌症的 6 个月生存率为 78% [68 - 85],1 年生存率为 66% [55 - 74],5 年生存率为 26% [17 - 36]。组群总生存期的中位数为 24.37 个月 [16.10 - 32.63]。平均总生存期为 46.02 个月 [32.89 - 59.16]。在最后一次联系时,86%的手术患者可以重新行走。ECOG表现状态评分、骨转移部位的数量、内脏转移灶的存在以及术前接受全身治疗的次数都是不利的生存因素。3名患者(3.2%)出现假体早期脱位,2名患者(2.2%)的部分髋关节假体分别在10年和11年后出现无菌性松动,4名患者(4.3%)出现早期感染,通过清创、抗生素和假体留置来控制感染。结论:不刮除手术是治疗髋臼周围转移瘤的有效方法。结论:不刮除手术是治疗髋臼周围转移瘤的有效方法,无论髋臼病变的类型如何,它都能带来可靠的疗效,使大多数患者能够重新行走,并且不会影响患者的存活率。
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引用次数: 0
Bone density measurement in patients with spinal metastatic tumors using chest quantitative CT deep learning model 利用胸部定量 CT 深度学习模型测量脊柱转移性肿瘤患者的骨密度
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-09 DOI: 10.1016/j.jbo.2024.100641
Zhi Wang , Yiyun Tan , Kaibin Zeng , Hao Tan , Pingsen Xiao , Guanghui Su

Objective

This study aims to develop a deep learning model using the 3DResUNet architecture to predict vertebral volumetric bone mineral density (vBMD) from Quantitative Computed Tomography (QCT) scans in patients with spinal metastatic tumors, enhancing osteoporosis screening capabilities.

Methods

749 patients with spinal metastatic tumors underwent QCT vertebral vBMD measurements. The dataset was randomly split into training (599 cases) and test sets (150 cases). The 3DResUNet model was trained for vBMD classification and prediction using QCT images processed with automated bone segmentation and ROI extraction.

Results

The deep learning model demonstrated strong performance with Spearman correlation coefficients of 0.923 (training set) and 0.918 (test set) between predicted and QCT-measured vBMD values. Bland-Altman analysis showed a slight bias of −1.42 mg/cm3 (training set) and −1.14 mg/cm3 (test set) between the model predictions and QCT measurements. The model achieved an area under the curve (AUC) of 0.977 (training set) and 0.966 (test set) for diagnosing Osteoporosis based on vBMD.

Conclusion

The developed deep learning model using 3DResUNet effectively predicts vertebral vBMD from QCT scans in patients with spinal metastatic tumors. It provides accurate and automated vBMD measurements, potentially facilitating widespread osteoporosis screening in clinical practice, mainly where DXA availability is limited.
目标本研究旨在利用 3DResUNet 架构开发一种深度学习模型,以预测脊柱转移性肿瘤患者通过定量计算机断层扫描(QCT)获得的椎体体积骨密度(vBMD),从而提高骨质疏松症筛查能力。数据集随机分为训练集(599 例)和测试集(150 例)。结果深度学习模型表现强劲,预测值和 QCT 测量值之间的 Spearman 相关系数分别为 0.923(训练集)和 0.918(测试集)。Bland-Altman分析显示,模型预测值与QCT测量值之间存在-1.42 mg/cm3(训练集)和-1.14 mg/cm3(测试集)的轻微偏差。该模型根据 vBMD 诊断骨质疏松症的曲线下面积(AUC)分别为 0.977(训练集)和 0.966(测试集)。它提供了准确、自动化的 vBMD 测量结果,可能有助于在临床实践中广泛开展骨质疏松症筛查,主要是在 DXA 可用性有限的地方。
{"title":"Bone density measurement in patients with spinal metastatic tumors using chest quantitative CT deep learning model","authors":"Zhi Wang ,&nbsp;Yiyun Tan ,&nbsp;Kaibin Zeng ,&nbsp;Hao Tan ,&nbsp;Pingsen Xiao ,&nbsp;Guanghui Su","doi":"10.1016/j.jbo.2024.100641","DOIUrl":"10.1016/j.jbo.2024.100641","url":null,"abstract":"<div><h3>Objective</h3><div>This study aims to develop a deep learning model using the 3DResUNet architecture to predict vertebral volumetric bone mineral density (vBMD) from Quantitative Computed Tomography (QCT) scans in patients with spinal metastatic tumors, enhancing osteoporosis screening capabilities.</div></div><div><h3>Methods</h3><div>749 patients with spinal metastatic tumors underwent QCT vertebral vBMD measurements. The dataset was randomly split into training (599 cases) and test sets (150 cases). The 3DResUNet model was trained for vBMD classification and prediction using QCT images processed with automated bone segmentation and ROI extraction.</div></div><div><h3>Results</h3><div>The deep learning model demonstrated strong performance with Spearman correlation coefficients of 0.923 (training set) and 0.918 (test set) between predicted and QCT-measured vBMD values. Bland-Altman analysis showed a slight bias of −1.42 mg/cm<sup>3</sup> (training set) and −1.14 mg/cm<sup>3</sup> (test set) between the model predictions and QCT measurements. The model achieved an area under the curve (AUC) of 0.977 (training set) and 0.966 (test set) for diagnosing Osteoporosis based on vBMD.</div></div><div><h3>Conclusion</h3><div>The developed deep learning model using 3DResUNet effectively predicts vertebral vBMD from QCT scans in patients with spinal metastatic tumors. It provides accurate and automated vBMD measurements, potentially facilitating widespread osteoporosis screening in clinical practice, mainly where DXA availability is limited.</div></div>","PeriodicalId":48806,"journal":{"name":"Journal of Bone Oncology","volume":"49 ","pages":"Article 100641"},"PeriodicalIF":3.4,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
-AI-assisted diagnostic potential of CT in bone oncology and its impact on clinical decision-making for intensive care -骨肿瘤 CT 的人工智能辅助诊断潜力及其对重症监护临床决策的影响
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-01 DOI: 10.1016/j.jbo.2024.100639
Wei Hua, Bing Xu, Xianwen Zhang, Tingting Chen

Objective

This study evaluates the AI-assisted diagnostic potential of computed tomography (CT) for bone cancer and its influence on patient care during the pre- and post-treatment phases. It compares patient management approaches based on CT severity levels and identifies distinct CT phenotypes linked to disease severity.

Methodology

We retrospectively examined 50 patients diagnosed with bone cancer between December 2022 and June 2023. The CT scans were analyzed according to the Radiological Society of North America (RSNA) guidelines. This study was performed using the deep convolutional neutral network (DCNN) model to assist doctors in diagnosing bone tumors through CT scanning. Patients’ management approaches were compared based on the severity levels indicated by CT scans.

Results

Fifty patients participated in this study, with a median age of 67.2 years, ranging from 32 to 89 years. Of them, 38 % were female and 62 % were male. In 2022, 19 individuals (13 males and 6 females, ages 32 to 84) were assessed, with a mean age of 59.9 years. In 2023, 31 individuals, aged 54 to 89 with a mean age of 71.6 years, were assessed; among them were 18 men and 13 women. SPECT scans revealed the following key diagnostic features: 85.9 % of patients exhibited bone lesions with ground-glass opacities, 88 % had multipolar involvement, 92.8 % had bilateral involvement, and 92.8 % showed peripheral involvement. The severity scores based on CT scans were significantly higher in patients requiring intensive care, with scores above 14 being more common in this group.

Conclusion

Distinct CT findings during the AI-assisted diagnosis and treatment of bone cancer provided prompt and sensitive examination capabilities. Notably, two CT phenotypes emerged, associated with large consolidation patterns and high severity scores, offering crucial insights into disease severity and aiding in clinical decision-making for intensive care requirements. The study underscores the importance of CT in the effective monitoring and management of bone cancer pre- and post-treatment.
本研究评估了骨癌计算机断层扫描(CT)的人工智能辅助诊断潜力及其对治疗前和治疗后阶段患者护理的影响。研究比较了基于 CT 严重程度的患者管理方法,并确定了与疾病严重程度相关的不同 CT 表型。方法我们回顾性地检查了 2022 年 12 月至 2023 年 6 月期间诊断为骨癌的 50 名患者。CT扫描根据北美放射学会(RSNA)指南进行分析。本研究使用深度卷积中性网络(DCNN)模型来协助医生通过CT扫描诊断骨肿瘤。根据 CT 扫描显示的严重程度,对患者的管理方法进行了比较。结果50 名患者参与了这项研究,中位年龄为 67.2 岁,从 32 岁到 89 岁不等。其中,38%为女性,62%为男性。2022 年,19 名患者(13 名男性和 6 名女性,年龄在 32 岁至 84 岁之间)接受了评估,平均年龄为 59.9 岁。2023 年,共有 31 人接受了评估,年龄从 54 岁到 89 岁不等,平均年龄为 71.6 岁,其中男性 18 人,女性 13 人。SPECT 扫描显示了以下主要诊断特征:85.9%的患者表现为磨玻璃不透明的骨病变,88%为多极受累,92.8%为双侧受累,92.8%为周围受累。结论在人工智能辅助诊断和治疗骨癌的过程中,不同的 CT 发现提供了及时和灵敏的检查能力。值得注意的是,出现了两种 CT 表型,它们与大的合并模式和高的严重程度评分相关,为了解疾病严重程度提供了重要依据,并有助于对重症监护要求做出临床决策。这项研究强调了 CT 在有效监测和管理骨癌治疗前后的重要性。
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引用次数: 0
Deep bone oncology Diagnostics: Computed tomography based Machine learning for detection of bone tumors from breast cancer metastasis 深度骨肿瘤诊断:基于计算机断层扫描的机器学习检测乳腺癌转移的骨肿瘤
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-01 DOI: 10.1016/j.jbo.2024.100638
Xiao Zhao , Yue-han Dong , Li-yu Xu , Yan-yan Shen , Gang Qin , Zheng-bo Zhang

Purpose

The objective of this study is to develop a novel diagnostic tool using deep learning and radiomics to distinguish bone tumors on CT images as metastases from breast cancer. By providing a more accurate and reliable method for identifying metastatic bone tumors, this approach aims to significantly improve clinical decision-making and patient management in the context of breast cancer.

Methods

This study utilized CT images of bone tumors from 178 patients, including 78 cases of breast cancer bone metastases and 100 cases of non-breast cancer bone metastases. The dataset was processed using the Medical Image Segmentation via Self-distilling TransUNet (MISSU) model for automated segmentation. Radiomics features were extracted from the segmented tumor regions using the Pyradiomics library, capturing various aspects of tumor phenotype. Feature selection was conducted using LASSO regression to identify the most predictive features. The model’s performance was evaluated using ten-fold cross-validation, with metrics including accuracy, sensitivity, specificity, and the Dice similarity coefficient.

Results

The developed radiomics model using the SVM algorithm achieved high discriminatory power, with an AUC of 0.936 on the training set and 0.953 on the test set. The model’s performance metrics demonstrated strong accuracy, sensitivity, and specificity. Specifically, the accuracy was 0.864 for the training set and 0.853 for the test set. Sensitivity values were 0.838 and 0.789 for the training and test sets, respectively, while specificity values were 0.896 and 0.933 for the training and test sets, respectively. These results indicate that the SVM model effectively distinguishes between bone metastases originating from breast cancer and other origins. Additionally, the average Dice similarity coefficient for the automated segmentation was 0.915, demonstrating a high level of agreement with manual segmentations.

Conclusion

This study demonstrates the potential of combining CT-based radiomics and deep learning for the accurate detection of bone metastases from breast cancer. The high-performance metrics indicate that this approach can significantly enhance diagnostic accuracy, aiding in early detection and improving patient outcomes. Future research should focus on validating these findings on larger datasets, integrating the model into clinical workflows, and exploring its use in personalized treatment planning.
目的本研究旨在利用深度学习和放射组学开发一种新型诊断工具,以区分 CT 图像上的骨肿瘤是否为乳腺癌转移瘤。通过提供一种更准确、更可靠的方法来识别转移性骨肿瘤,该方法旨在显著改善乳腺癌的临床决策和患者管理。方法本研究利用了 178 例患者的骨肿瘤 CT 图像,其中包括 78 例乳腺癌骨转移病例和 100 例非乳腺癌骨转移病例。数据集采用医学影像自动分割模型(MISSU)进行处理。使用 Pyradiomics 库从分割的肿瘤区域提取放射组学特征,捕捉肿瘤表型的各个方面。使用 LASSO 回归法进行特征选择,以确定最具预测性的特征。使用十倍交叉验证对模型的性能进行了评估,评估指标包括准确率、灵敏度、特异性和 Dice 相似系数。结果使用 SVM 算法开发的放射组学模型具有很高的判别能力,在训练集上的 AUC 为 0.936,在测试集上的 AUC 为 0.953。该模型的性能指标表现出很高的准确性、灵敏度和特异性。具体来说,训练集的准确度为 0.864,测试集的准确度为 0.853。训练集和测试集的灵敏度值分别为 0.838 和 0.789,特异性值分别为 0.896 和 0.933。这些结果表明,SVM 模型能有效区分乳腺癌骨转移和其他来源的骨转移。此外,自动分割的平均 Dice 相似性系数为 0.915,表明与人工分割具有很高的一致性。高性能指标表明,这种方法可以显著提高诊断准确性,有助于早期检测和改善患者预后。未来的研究应侧重于在更大的数据集上验证这些发现,将模型集成到临床工作流程中,并探索其在个性化治疗计划中的应用。
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引用次数: 0
Editors' introduction: The microenvironment in bone metastasis – New dimensions 编辑引言:骨转移中的微环境--新维度
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-01 DOI: 10.1016/j.jbo.2024.100633
Ingunn Holen , Claire Edwards
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引用次数: 0
Automated segmentation and source prediction of bone tumors using ConvNeXtv2 Fusion based Mask R-CNN to identify lung cancer metastasis 使用基于 Mask R-CNN 的 ConvNeXtv2 融合技术自动分割和预测骨肿瘤,以识别肺癌转移灶
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-01 DOI: 10.1016/j.jbo.2024.100637
Ketong Zhao , Ping Dai , Ping Xiao , Yuhang Pan , Litao Liao , Junru Liu , Xuemei Yang , Zhenxing Li , Yanjun Ma , Jianxi Liu , Zhengbo Zhang , Shupeng Li , Hailong Zhang , Sheng Chen , Feiyue Cai , Zhen Tan
Lung cancer, which is a leading cause of cancer-related deaths worldwide, frequently metastasizes to the bones, significantly diminishing patients’ quality of life and complicating treatment strategies. This study aims to develop an advanced 3D Mask R-CNN model, enhanced with the ConvNeXt-V2 backbone, for the automatic segmentation of bone tumors and identification of lung cancer metastasis to support personalized treatment planning. Data were collected from two hospitals: Center A (106 patients) and Center B (265 patients). The data from Center B were used for training, while Center A’s dataset served as an independent external validation set. High-resolution CT scans with 1 mm slice thickness and no inter-slice gaps were utilized, and the regions of interest (ROIs) were manually segmented and validated by two experienced radiologists. The 3D Mask R-CNN model achieved a Dice Similarity Coefficient (DSC) of 0.856, a sensitivity of 0.921, and a specificity of 0.961 on the training set. On the test set, it achieved a DSC of 0.849, a sensitivity of 0.911, and a specificity of 0.931. For the classification task, the model attained an AUC of 0.865, an accuracy of 0.866, a sensitivity of 0.875, and a specificity of 0.835 on the training set, while achieving an AUC of 0.842, an accuracy of 0.836, a sensitivity of 0.847, and a specificity of 0.819 on the test set. These results highlight the model’s potential in improving the accuracy of bone tumor segmentation and lung cancer metastasis detection, paving the way for enhanced diagnostic workflows and personalized treatment strategies in clinical oncology.
肺癌是全球癌症相关死亡的主要原因之一,经常转移到骨骼,大大降低了患者的生活质量,并使治疗策略复杂化。本研究旨在开发一种先进的 3D Mask R-CNN 模型,该模型以 ConvNeXt-V2 为骨干增强,用于自动分割骨肿瘤和识别肺癌转移,以支持个性化治疗计划。数据收集自两家医院:中心 A(106 名患者)和中心 B(265 名患者)。B 中心的数据用于训练,而 A 中心的数据集则作为独立的外部验证集。使用的是切片厚度为 1 毫米、切片间无间隙的高分辨率 CT 扫描,感兴趣区(ROI)由两名经验丰富的放射科医生手动分割和验证。3D Mask R-CNN 模型在训练集上的 Dice 相似系数 (DSC) 为 0.856,灵敏度为 0.921,特异度为 0.961。在测试集上,其 DSC 为 0.849,灵敏度为 0.911,特异度为 0.931。在分类任务中,该模型在训练集上的 AUC 为 0.865,准确率为 0.866,灵敏度为 0.875,特异度为 0.835;在测试集上的 AUC 为 0.842,准确率为 0.836,灵敏度为 0.847,特异度为 0.819。这些结果凸显了该模型在提高骨肿瘤分割和肺癌转移检测的准确性方面的潜力,为临床肿瘤学中增强诊断工作流程和个性化治疗策略铺平了道路。
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引用次数: 0
AI diagnostics in bone oncology for predicting bone metastasis in lung cancer patients using DenseNet-264 deep learning model and radiomics 利用 DenseNet-264 深度学习模型和放射组学预测肺癌患者骨转移的骨肿瘤人工智能诊断技术
IF 3.4 2区 医学 Q2 Medicine Pub Date : 2024-10-01 DOI: 10.1016/j.jbo.2024.100640
Taisheng Zeng , Yusi Chen , Daxin Zhu , Yifeng Huang , Ying Huang , Yijie Chen , Jianshe Shi , Bijiao Ding , Jianlong Huang
This study aims to predict bone metastasis in lung cancer patients using radiomics and deep learning. Early prediction of bone metastasis is crucial for timely intervention and personalized treatment plans. This can improve patient outcomes and quality of life. By integrating advanced imaging techniques with artificial intelligence, this study seeks to enhance predictive accuracy and clinical decision-making.

Methods

We included 189 lung cancer patients, comprising 89 with non-bone metastasis and 100 with confirmed bone metastasis. Radiomic features were extracted from CT images, and feature selection was performed using Minimum Redundancy Maximum Relevance (mRMR) and Least Absolute Shrinkage and Selection Operator (LASSO). We developed and validated a radiomics model and a deep learning model using DenseNet-264. Model performance was evaluated using the area under the receiver operating characteristic curve (AUC), accuracy, sensitivity, and specificity. Statistical comparisons were made using the DeLong test.

Results

The radiomics model achieved an AUC of 0.815 on the training set and 0.778 on the validation set. The DenseNet-264 model demonstrated superior performance with an AUC of 0.990 on the training set and 0.971 on the validation set. The DeLong test confirmed that the AUC of the DenseNet-264 model was significantly higher than that of the radiomics model (p < 0.05).

Conclusions

The DenseNet-264 model significantly outperforms the radiomics model in predicting bone metastasis in lung cancer patients. The early and accurate prediction provided by the deep learning model can facilitate timely interventions and personalized treatment planning, potentially improving patient outcomes. Future studies should focus on validating these findings in larger, multi-center cohorts and integrating clinical data to further enhance predictive accuracy.
本研究旨在利用放射组学和深度学习预测肺癌患者的骨转移。骨转移的早期预测对于及时干预和个性化治疗方案至关重要。这可以改善患者的预后和生活质量。通过将先进的成像技术与人工智能相结合,本研究旨在提高预测准确性和临床决策水平。方法我们纳入了189名肺癌患者,其中89名为非骨转移患者,100名为确诊骨转移患者。我们从CT图像中提取了放射组学特征,并使用最小冗余最大相关性(mRMR)和最小绝对收缩和选择操作器(LASSO)进行了特征选择。我们使用 DenseNet-264 开发并验证了放射组学模型和深度学习模型。我们使用接收者工作特征曲线下面积(AUC)、准确性、灵敏度和特异性对模型性能进行了评估。结果放射组学模型在训练集上的 AUC 为 0.815,在验证集上的 AUC 为 0.778。DenseNet-264 模型在训练集上的 AUC 为 0.990,在验证集上的 AUC 为 0.971,表现优异。结论在预测肺癌患者骨转移方面,DenseNet-264 模型明显优于放射组学模型。深度学习模型提供的早期准确预测有助于及时干预和个性化治疗规划,从而改善患者的预后。未来的研究应侧重于在更大规模的多中心队列中验证这些发现,并整合临床数据以进一步提高预测准确性。
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引用次数: 0
期刊
Journal of Bone Oncology
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