1.中山大学附属第一医院放射科,广东 广州 510080
2.广州新华学院,广东 广州 510080
陈明杰,第一作者,研究方向:腹部放射学,E-mail:chenmj76@mail.sysu.edu.cn
收稿:2026-06-13,
修回:2026-08-28,
录用:2026-09-04,
纸质出版:2026-09-20
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陈明杰,李珂,罗佳丹等.能谱CT参数对胰腺无功能性神经内分泌肿瘤淋巴结转移的预测价值[J].中山大学学报(医学科学版),2026,47(05):868-879.
CHEN Mingjie,LI Ke,LUO Jiadan,et al.The Predictive Value of Dual-layer Spectral Detector CT Parameters on Lymph Node Metastasis of Nonfunctional Pancreatic Neuroendocrine Tumor[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(05):868-879.
陈明杰,李珂,罗佳丹等.能谱CT参数对胰腺无功能性神经内分泌肿瘤淋巴结转移的预测价值[J].中山大学学报(医学科学版),2026,47(05):868-879. DOI: 10.11714/jsysu.med.YX20260084.
CHEN Mingjie,LI Ke,LUO Jiadan,et al.The Predictive Value of Dual-layer Spectral Detector CT Parameters on Lymph Node Metastasis of Nonfunctional Pancreatic Neuroendocrine Tumor[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(05):868-879. DOI: 10.11714/jsysu.med.YX20260084.
目的
2
探讨术前能谱CT参数在预测胰腺无功能性神经内分泌肿瘤淋巴结转移的应用价值。
方法
2
回顾性纳入2019年9月至2024年7月中山大学附属第一医院术前行能谱CT增强检查且手术病理结果证实为胰腺无功能性神经内分泌肿瘤患者。根据术前CT勾画病灶实性区域3个层面的平均值,获取胰腺实质期和门静脉期常规、单能量图像(40 keV、70 keV、100 keV)、无水碘图、有效原子序数(Z
eff
)图等相关定量参数。分析患者的临床指标、影像征象、常规CT和能谱CT定量参数共34个参数,比较两组间各参数的差异,使用logistic回归和最小绝对收缩和选择算子(LASSO)回归挑选独立相关因素,并绘制各参数模型受试者特征曲线,评估其预测效能。
结果
2
本研究共纳入胰腺无功能性神经内分泌肿瘤患者82例(男37例,女45例,平均年龄49.7±14.7岁),其中淋巴结转移组30例、无淋巴结转移组52例。经过单因素logistics回归、LASSO回归、多因素logistic回归逐步分析后结果显示体质量指数(BMI)、器官侵犯、门静脉期的标准化CT值(nCTv)和门静脉期的标准化碘浓度(nICv)为独立相关因素。建立临床影像定性指标模型(BMI+器官侵犯)、常规CT参数模型(nCTv)、能谱CT模型(nICv)以及综合模型(器官侵犯+nICv)的AUC(95%CI)分别为0.815(0.719,0.910)、0.750(0.642,0.858)、0.829(0.733,0.925)、0.879(0.806,0.953)。临床影像参数与能谱参数结合的综合模型预测效能表现更佳。
结论
2
能谱CT参数预测胰腺无功能性神经内分泌肿瘤淋巴结转移的效能优于常规CT参数,实现术前无创评估,辅助临床决策。
Objective
2
To investigate the value of preoperative dual-layer spectral detector CT (DLCT) parameters in predicting lymph node metastasis (LNM) of non-functional pancreatic neuroendocrine neoplasms (NF-pNENs).
Methods
2
A retrospective study was conducted on patients with pa
thologically confirmed NF-pNENs who underwent preoperative contrast-enhanced DLCT examination between September 2019 and July 2024. Regions of interest (ROIs) were manually delineated on three representative slices of the solid component of the lesion, and the mean values were recorded. Conventional CT parameters, monochromatic energy images (40 keV, 70 keV, 100 keV), iodine concentration maps, and effective atomic number (Z
eff
) maps in the pancreatic parenchymal phase and portal venous phase were acquired. A total of 34 parameters, including clinical characteristics, imaging features, conventional CT and DLCT quantitative parameters, were analyzed. Intergroup differences were compared between the LNM and non-LNM groups. Independent predictive factors were screened using logistic regression and least absolute shrinkage and selection operator (LASSO) regression. Receiver operating characteristic (ROC) curves were generated for each predictive model, and the area under the curve (AUC) was calculated to evaluate the predictive efficacy.
Results
2
A total of 82 patients with NF-pNENs were enrolled, including 37 males and 45 females, with a mean age of 49.7±14.7 years. Thirty patients were performed with LNM and 52 were with non-LNM. After univariate logistic regression, LASSO regression and multivariate stepwise logistic regression analyses, body mass index (BMI), organ invasion, normalized CT value in the portal venous phase (nCTv) and normalized iodine concentration in the portal venous phase (nICv) were identified as independent predictive factors. The AUCs of the clinical-radiological qualitative model (BMI+organ invasion), conventional CT model (nCTv), DLCT model (nICv) and comprehensive model (organ invasion+nICv) were 0.815 (0.719, 0.910), 0.750 (0.642, 0.858), 0.829 (0.733, 0.925) and 0.865 (0.879, 0.953), respectively. The comprehensive model combining clinical-radiological and DLCT characteristics exhibited superior predictive performance.
Conclusion
2
DLCT parameters are more effective than conventional CT parameters in predicting LNM in NF-pNENs, enabling non-invasive preoperative prediction and assisting clinical decision-making.
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