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Diagnostic value of whole-tumor apparent diffusion coefficient map radiomics analysis in predicting early recurrence of solitary hepatocellular carcinoma ≤ 5 cm

  • Hepatobiliary
  • Published:
Abdominal Radiology Aims and scope Submit manuscript

Abstract

Purpose

To evaluate the role of whole-tumor radiomics analysis of apparent diffusion coefficient (ADC) maps in predicting early recurrence (ER) of solitary hepatocellular carcinoma (HCC) ≤ 5 cm and compare the diagnostic efficiency of whole-tumor and single-slice ADC measurements.

Methods

One hundred and seventy patients with primary HCC were randomly divided into the training set (n = 119) and the test set (n = 51). The diagnostic efficiency was compared between the whole-tumor and single-slice ADC measurements. The clinical–radiological model was established by selected significant clinical characteristics and qualitative imaging features. The radiomics model was constructed using the least absolute shrinkage and selection operator (LASSO) logistic regression algorithm. The significant clinical–radiological risk factors and radiomics features were integrated to develop the combined model. Receiver operating characteristic (ROC) curves were used for evaluating the predictive performance.

Results

Cirrhosis, age, and albumin were significantly associated with ER in the clinical–radiological model selected by the random forest classifier. The diagnostic efficiency of the whole-tumor ADC measurements was slight higher than that of the single-slice (AUC = 0.602 and 0.586, respectively). The clinical–radiological model (AUC = 0.84 and 0.82 in the training and test sets, respectively) showed better diagnostic performance than the radiomics model (AUC = 0.70 and 0.69 in the training and test sets, respectively) in predicting ER. The combined model showed optimal predictive performance with the highest AUC values of 0.88 and 0.85 in the training and test sets, respectively.

Conclusions

The whole-tumor ADC measurements performed better than the single-slice ADC measurements. The clinical–radiological model performed better than the radiomics model for predicting ER in patients with solitary HCC ≤ 5 cm.

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Abbreviations

AdaBoost:

Adaptive boosting

ADC:

Apparent diffusion coefficient

AFP:

Alpha-fetoprotein

ALB:

Albumin

ANOVA:

Analysis of variance

AUC:

Area under the curve

CI:

Confidence interval

DWI:

Diffusion-weighted imaging

ER:

Early recurrence

HCC:

Hepatocellular carcinoma

ICC:

Intraclass correlation coefficient

LASSO:

The least absolute shrinkage and selection operator

LR:

Logistic regression

MRI:

Magnetic resonance imaging

RF:

Random forest

ROC:

Receiver operating characteristic

ROI:

Region of interest

VOI:

Volume of interest

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Funding

This study was supported by the PUMC Youth Fund (Grant No. 2017320010).

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Authors and Affiliations

Authors

Contributions

Conceptualization: LW and XM; methodology: LW and BF; formal analysis and investigation: LW, SW, JH, DL, ML, and SW; writing—original draft preparation: LW; writing—review and editing: XM and XZ; supervision: XZ.

Corresponding authors

Correspondence to Xiaohong Ma or Xinming Zhao.

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The authors declare that they have no conflict of interest.

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This study was approved by our institutional review board.

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The requirement for patient informed consent was waived due to the retrospective nature of this study.

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Wang, L., Feng, B., Wang, S. et al. Diagnostic value of whole-tumor apparent diffusion coefficient map radiomics analysis in predicting early recurrence of solitary hepatocellular carcinoma ≤ 5 cm. Abdom Radiol 47, 3290–3300 (2022). https://doi.org/10.1007/s00261-022-03582-6

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