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European Radiology

, Volume 29, Issue 2, pp 494–500 | Cite as

Muscle mass estimation on breast magnetic resonance imaging in breast cancer patients: comparison between psoas muscle area on computer tomography and pectoralis muscle area on MRI

  • Federica RossiEmail author
  • Francesca Valdora
  • Emanuele Barabino
  • Massimo Calabrese
  • Alberto Stefano Tagliafico
Breast

Abstract

Objectives

To evaluate the correlation between psoas muscle area (TPA) on CT images and pectoralis muscle area (PMA) on MRI in breast cancer patients.

Methods

This retrospective study was institutional review board approved and women involved gave written informed consent. Twenty six patients with both body CT and breast MRI available were evaluated. Two radiologists calculated TPA on 1.25-mm and 5-mm body CT images. Two radiologists measured PMA on axial T1-weighted images. Statistical analysis included inter- and intra-reader agreement and correlation between TPA on CT and PMA on MRI.

Results

The Pearson r correlation coefficient was 0.70 (95% CI 0.41–0.81) and the coefficient of determination was 0.49. The inter-reader agreement was k = 0.85 and k = 0.79 for axial 1.25-mm and 5-mm CT images, respectively. The intra-reader agreement of reader 1 was k = 0.98 and k = 0.94 for 1.25-mm and 5-mm CT images, respectively. The intra-reader agreement of reader 2 was k = 0.95 and k = 0.94 for 1.25-mm and 5-mm CT images, respectively. On axial T1-weighted images, the inter-reader agreement for radiologists evaluating the PMA was k = 0.61. Intra-observer agreement of reader 1 and reader 2 for PMA estimation was good (0.62 and 0.64), respectively.

Conclusion

The correlation between TPA on CT images and PMA on MRI was very good. Pectoralis muscle area on breast MRI could be useful to estimate muscle mass in women with breast cancer.

Key Points

• Pectoralis muscle area can be estimated on breast MRI

• Total psoas area on CT and pectoralis muscle area on MRI are strongly correlated

• Pectoralis muscle area on breast MRI could estimate the skeletal muscle mass

Keywords

Magnetic resonance imaging Breast cancer Muscle mass Psoas muscle Pectoralis muscle 

Abbreviations

ACS

American Cancer Society

CT

Computer tomography

EUSOBI

European Society of Breast Imaging

MRI

Magnetic resonance imaging

NCCN

National Comprehensive Cancer Network

PMA

Pectoralis muscle area

TPA

Total psoas area

Notes

Funding

The authors state that this work has not received any funding.

Compliance with ethical standards

Guarantor

The scientific guarantor of this publication is Alberto Stefano Tagliafico.

Conflict of interest

The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.

Statistics and biometry

One of the authors has significant statistical expertise.

Informed consent

Written informed consent was obtained from all subjects (patients) in this study.

Ethical approval

Institutional review board approval was obtained.

Methodology

• retrospective

• cross-sectional study

• performed at one institution

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Copyright information

© European Society of Radiology 2018

Authors and Affiliations

  1. 1.Department of Health SciencesDISSAL- University of GenovaGenoaItaly
  2. 2.Ospedale Policlinico San MartinoGenoaItaly

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