基于CT放射组学特征和临床因素的放射组学提名图预测透明细胞肾细胞癌的Ki-67表达和预后:一项双中心研究。

IF 3.5 2区 医学 Q2 ONCOLOGY Cancer Imaging Pub Date : 2024-08-06 DOI:10.1186/s40644-024-00744-1
Ben Li, Jie Zhu, Yanmei Wang, Yuchao Xu, Zhaisong Gao, Hailei Shi, Pei Nie, Ju Zhang, Yuan Zhuang, Zhenguang Wang, Guangjie Yang
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引用次数: 0

摘要

目的方法:纳入两个医疗中心的185名ccRCC患者,分别组成训练组(n = 130)和验证组(n = 55):方法:纳入两家医疗中心的185名ccRCC患者,并分别组成训练组(130人)和验证组(55人)。通过单变量和多变量回归确定Ki-67表达状态的独立预测因子,并从术前CT图像中提取放射组学特征。采用最大相关性最小冗余算法(mRMR)和最小绝对缩小和选择算子算法(LASSO)确定与高Ki-67表达最相关的放射组学特征。随后,建立了临床模型、放射组学特征(RS)和放射组学提名图。利用曲线下面积(AUC)、校准曲线、Delong 检验和决策曲线分析(DCA)验证了预测 Ki-67 表达状态的性能。预后预测通过生存曲线和一致性指数(C-index)进行评估:结果:肿瘤大小是 Ki-67 表达状态的唯一独立预测指标。最终确定了五个放射组学特征来构建 RS(AUC:训练组,0.821;验证组,0.799)。放射组学提名图获得了更高的AUC(训练组,0.841;验证组,0.814)和临床净效益。此外,放射组学提名图在预测ccRCC患者的预后方面提供了最高的C指数(训练组,0.841;验证组,0.820):放射组学提名图能准确预测ccRCC患者的Ki-67表达状态,并表现出很强的预后预测能力,可为ccRCC患者定制个性化治疗策略和进行全面临床监测提供价值。
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Radiomics nomogram based on CT radiomics features and clinical factors for prediction of Ki-67 expression and prognosis in clear cell renal cell carcinoma: a two-center study.

Objectives: To develop and validate a radiomics nomogram combining radiomics features and clinical factors for preoperative evaluation of Ki-67 expression status and prognostic prediction in clear cell renal cell carcinoma (ccRCC).

Methods: Two medical centers of 185 ccRCC patients were included, and each of them formed a training group (n = 130) and a validation group (n = 55). The independent predictor of Ki-67 expression status was identified by univariate and multivariate regression, and radiomics features were extracted from the preoperative CT images. The maximum relevance minimum redundancy (mRMR) and the least absolute shrinkage and selection operator algorithm (LASSO) were used to identify the radiomics features that were most relevant for high Ki-67 expression. Subsequently, clinical model, radiomics signature (RS), and radiomics nomogram were established. The performance for prediction of Ki-67 expression status was validated using area under curve (AUC), calibration curve, Delong test, decision curve analysis (DCA). Prognostic prediction was assessed by survival curve and concordance index (C-index).

Results: Tumour size was the only independent predictor of Ki-67 expression status. Five radiomics features were finally identified to construct the RS (AUC: training group, 0.821; validation group, 0.799). The radiomics nomogram achieved a higher AUC (training group, 0.841; validation group, 0.814) and clinical net benefit. Besides, the radiomics nomogram provided a highest C-index (training group, 0.841; validation group, 0.820) in predicting prognosis for ccRCC patients.

Conclusions: The radiomics nomogram can accurately predict the Ki-67 expression status and exhibit a great capacity for prognostic prediction in patients with ccRCC and may provide value for tailoring personalized treatment strategies and facilitating comprehensive clinical monitoring for ccRCC patients.

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来源期刊
Cancer Imaging
Cancer Imaging ONCOLOGY-RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
CiteScore
7.00
自引率
0.00%
发文量
66
审稿时长
>12 weeks
期刊介绍: Cancer Imaging is an open access, peer-reviewed journal publishing original articles, reviews and editorials written by expert international radiologists working in oncology. The journal encompasses CT, MR, PET, ultrasound, radionuclide and multimodal imaging in all kinds of malignant tumours, plus new developments, techniques and innovations. Topics of interest include: Breast Imaging Chest Complications of treatment Ear, Nose & Throat Gastrointestinal Hepatobiliary & Pancreatic Imaging biomarkers Interventional Lymphoma Measurement of tumour response Molecular functional imaging Musculoskeletal Neuro oncology Nuclear Medicine Paediatric.
期刊最新文献
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