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[18F]FDG PET/CT features for the molecular characterization of primary breast tumors

  • Lidija Antunovic
  • Francesca Gallivanone
  • Martina Sollini
  • Andrea Sagona
  • Alessandra Invento
  • Giulia Manfrinato
  • Margarita Kirienko
  • Corrado Tinterri
  • Arturo ChitiEmail author
  • Isabella Castiglioni
Original Article

Abstract

Purpose

The aim of this study was to evaluate the role of imaging features derived from [18F]FDG-PET/CT to provide in vivo characterization of breast cancer (BC).

Methods

Images from 43 patients with a first diagnosis of BC were reviewed. Images were acquired before any treatment. Histological data were derived from pretreatment biopsy or surgical histological specimen; these included tumor type, grade, ER and PgR receptor status, lymphovascular invasion, Ki67 index, HER2 status, and molecular subtype. Standard parameters (SUVmean, TLG, MTV) and advanced imaging features (histogram-based and shape and size features) were evaluated. Univariate analysis, hierarchical clustering analysis, and exact Fisher’s test were used for statistical analysis of data. Imaging-derived metrics were reduced evaluating the mutual correlation within group of features as well as the mutual correlation between groups of features to form a signature.

Results

A significant correlation was found between some advanced imaging features and the histological type. Different molecular subtypes were characterized by different values of two histogram-based features (median and energy). A significant association was observed between the imaging signature and luminal A and luminal B HER2 negative molecular subtype and also when considering luminal A, luminal B HER2-negative and HER2-positive groups. Similar results were found between the signature and all five molecular subtypes and also when considering the histological types of BC.

Conclusions

Our results suggest a complementary role of standard PET imaging parameters and advanced imaging features for the in vivo biological characterization of BC lesions.

Keywords

Breast cancer [18F]FDG-pet/Ct Radiomics 

Notes

Compliance with ethical standards

Funding

This study was not funded.

Conflict of interest

All authors declare that they have no conflicts of interest.

Ethical approval

This retrospective study was approved by the local Ethics Committee.

Informed consent

Informed consent for this retrospective study was obtained from all individual participants included in the study, as part of the consent signed when admitted in the hospital or when submitted to diagnostic procedures.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Lidija Antunovic
    • 1
  • Francesca Gallivanone
    • 2
  • Martina Sollini
    • 3
  • Andrea Sagona
    • 4
  • Alessandra Invento
    • 5
  • Giulia Manfrinato
    • 6
  • Margarita Kirienko
    • 3
  • Corrado Tinterri
    • 4
  • Arturo Chiti
    • 1
    • 3
    Email author return OK on get
  • Isabella Castiglioni
    • 2
  1. 1.Nuclear Medicine DepartmentHumanitas Research HospitalMilanItaly
  2. 2.Laboratory of Innovation and Integration in Molecular Medicine, Institute of Molecular Bioimaging and PhysiologyNational Research CouncilMilanItaly
  3. 3.Department of Biomedical SciencesHumanitas UniversityMilanItaly
  4. 4.Breast UnitHumanitas Research HospitalMilanItaly
  5. 5.Breast UnitIntegrated University HospitalVeronaItaly
  6. 6.Residency Program in Nuclear MedicineUniversity of MilanMilanItaly

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