Spectral CT-based nomogram for preoperative prediction of perineural invasion in locally advanced gastric cancer: a prospective study

被引:20
作者
Li, Jing [1 ]
Xu, Shuning [2 ]
Wang, Yi [3 ]
Fang, Mengjie [4 ]
Ma, Fei [5 ]
Xu, Chunmiao [1 ]
Hailiang, Li [1 ]
机构
[1] Zhengzhou Univ, Henan Canc Hosp, Affiliated Canc Hosp, Dept Radiol, 127 Dongming Rd, Zhengzhou 450008, Henan, Peoples R China
[2] Zhengzhou Univ, Henan Canc Hosp, Dept Gastrointestinal Oncol, Affiliated Canc Hosp, Zhengzhou, Henan, Peoples R China
[3] Zhengzhou Univ, Henan Canc Hosp, Affiliated Canc Hosp, Dept Pathol, Zhengzhou, Henan, Peoples R China
[4] Chinese Acad Sci, Inst Automat, CAS Key Lab Mol Imaging, Beijing 100190, Peoples R China
[5] Zhengzhou Univ, Henan Canc Hosp, Affiliated Canc Hosp, Dept Gastrointestinal Surg, Zhengzhou, Henan, Peoples R China
基金
中国国家自然科学基金;
关键词
Computed tomography; spectral imaging; Iodine concentration; Perineural invasion; Gastric cancer; NEOADJUVANT CHEMOTHERAPY; IODINE CONCENTRATION; SURVIVAL; SURGERY;
D O I
10.1007/s00330-023-09464-9
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
ObjectivesThis work focused on developing and validating the spectral CT-based nomogram to preoperatively predict perineural invasion (PNI) for locally advanced gastric cancer (LAGC).MethodsThis work prospectively included 196 surgically resected LAGC patients (139 males, 57 females, 59.55 +/- 11.97 years) undergoing triple enhanced spectral CT scans. Patients were labeled as perineural invasion (PNI) positive and negative according to pathologic reports, then further split into primary (n = 130) and validation cohort (n = 66). We extracted clinicopathological information, follow-up data, iodine concentration (IC), and normalized IC values against to aorta (nICs) at arterial/venous/delayed phases (AP/VP/DP). Clinicopathological features and IC values between PNI positive and negative groups were compared. Multivariable logistic regression was performed to screen independent risk factors of PNI. Then, a nomogram was established, and its capability was determined by ROC curves. Its clinical use was evaluated by decision curve analysis. The correlations of PNI and the nomogram with patients' survival were explored by log-rank survival analysis.ResultsBorrmann classification, tumor thickness, and nICDP were independent predictors of PNI and used to build the nomogram. The nomogram yielded higher AUCs of 0.853 (0.744-0.928) and 0.782 (0.701-0.850) in primary and validation cohorts than any other parameters (p < 0.05). Both PNI and the nomogram were related to post-surgical treatment planning. Only PNI was associated with disease-free survival in the primary cohort (p < 0.05).ConclusionThis work prospectively established a spectral CT-based nomogram, which can effectively predict PNI preoperatively and potentially guide post-surgical treatment strategy in LAGC.
引用
收藏
页码:5172 / 5183
页数:12
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