[Preoperative evaluation of histologic grade in invasive breast cancer with T2W-MRI based radiomics signature].
Zhong Nan Da Xue Xue Bao Yi Xue Ban
; 44(3): 285-289, 2019 Mar 28.
Article
em Zh
| MEDLINE
| ID: mdl-30971521
ABSTRACT
OBJECTIVE:
To develop and validate a fat-suppressed (T2 weighted-magnetic resonance imaging, T2W-MRI) based radiomics signature to preoperatively evaluate the histologic grade (grade I/II VS. grade III) of invasive breast cancer.â©Methods:
A total of 202 patients with MRI examination and pathologically confirmed invasive breast cancer from June 2011 to February 2017 were retrospectively enrolled. After retrieving fat-suppressed T2W images and tumor segmentation, radiomics features were extracted and valuable features were selected to build a radiomic signature with the least absolute shrinkage and selection operator (LASSO) method. Mann-Whitney U test was used to explore the correlation between radiomics signature and histologic grade. Receiver operating characteristics (ROC) curve was applied to determine the discriminative performance of the radiomics signature [area under curre (AUC), sensitivity, specificity, and accuracy]. An independent validation dataset was used to confirm the discriminatory power of radiomics signature. â©Results:
Eight radiomics features were selected to build a radiomics signature, which showed good performance for preoperatively evaluating histologic grade of invasive breast cancer, with an AUC of 0.802 (95% CI 0.729 to 0.875), sensitivity of 78.7%, specificity of 70.3% and accuracy of 73.7% in training dataset and AUC of 0.812 (95% CI 0.686 to 0.938), sensitivity of 80.0%, specificity of 73.3% and accuracy of 76.0% in the validation dataset.â©Conclusion:
The fat-suppressed T2W-MRI based radiomics signature can be used to preoperatively evaluate the histologic grade of invasive breast cancer, which may assist clinical decision-maker.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
/
Imageamento por Ressonância Magnética
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
Zh
Revista:
Zhong Nan Da Xue Xue Bao Yi Xue Ban
Assunto da revista:
MEDICINA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
China