Back to Search
Start Over
MRI-Based radiomics nomogram for differentiation of benign and malignant lesions of the parotid gland
- Source :
- European radiology. 31(6)
- Publication Year :
- 2020
-
Abstract
- Preoperative differentiation between benign parotid gland tumors (BPGT) and malignant parotid gland tumors (MPGT) is important for treatment decisions. The purpose of this study was to develop and validate an MRI-based radiomics nomogram for the preoperative differentiation of BPGT from MPGT. A total of 115 patients (80 in training set and 35 in external validation set) with BPGT (n = 60) or MPGT (n = 55) were enrolled. Radiomics features were extracted from T1-weighted and fat-saturated T2-weighted images. A radiomics signature model and a radiomics score (Rad-score) were constructed and calculated. A clinical-factors model was built based on demographics and MRI findings. A radiomics nomogram model combining the Rad-score and independent clinical factors was constructed using multivariate logistic regression analysis. The diagnostic performance of the three models was evaluated and validated using ROC curves on the training and validation datasets. Seventeen features from MR images were used to build the radiomics signature. The radiomics nomogram incorporating the clinical factors and radiomics signature had an AUC value of 0.952 in the training set and 0.938 in the validation set. Decision curve analysis showed that the nomogram outperformed the clinical-factors model in terms of clinical usefulness. The above-described radiomics nomogram performed well for differentiating BPGT from MPGT, and may help in the clinical decision-making process. • Differential diagnosis between BPGT and MPGT is rather difficult by conventional imaging modalities. • A radiomics nomogram integrated with the radiomics signature, clinical data, and MRI features facilitates differentiation of BPGT from MPGT with improved diagnostic efficacy.
- Subjects :
- medicine.medical_specialty
030218 nuclear medicine & medical imaging
Diagnosis, Differential
03 medical and health sciences
0302 clinical medicine
Radiomics
Medicine
Humans
Parotid Gland
Radiology, Nuclear Medicine and imaging
Neuroradiology
Retrospective Studies
medicine.diagnostic_test
Receiver operating characteristic
business.industry
Magnetic resonance imaging
General Medicine
Nomogram
Magnetic Resonance Imaging
Parotid gland
Nomograms
medicine.anatomical_structure
030220 oncology & carcinogenesis
Radiology
Differential diagnosis
business
Mri findings
Subjects
Details
- ISSN :
- 14321084
- Volume :
- 31
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- European radiology
- Accession number :
- edsair.doi.dedup.....7c2ca9b25f8da6e218cd6f963572ff67