, Volume 20, Issue 6, pp 1798-1805
Date: 01 Dec 2012

Factors Associated with Breast MRI Use: A Population-Based Analysis

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Abstract

Introduction

Although controversial, the use of breast magnetic resonance imaging (MRI) is widespread. We sought to determine factors that influenced its use in a population-based sample.

Methods

The National Health Interview Survey is conducted annually by the Centers for Disease Control and is designed to be representative of the American population. Data from 2010 were queried for the use of breast MRI and associated sociodemographic and risk characteristics.

Results

Of the 11,222 women aged ≥30 years who were surveyed, 4.7 % reported ever having a breast MRI. Nearly a quarter were done as part of a “routine exam” and <5 % were done for “family history” or for “high risk.” Factors correlating with MRI use on univariate analysis included age, race, personal and/or family history of breast cancer, history of benign breast biopsy, perceived risk, and insurance. On multivariate analysis, African-American race (p = 0.001), personal history (p < 0.001), history of benign biopsy (p < 0.001), and high perceived risk (p < 0.001) were significantly associated with increased MRI use. In a cohort without a personal history of breast cancer, race, history of benign biopsy, and perceived risk were independent correlates of breast MRI, whereas family history, age, and insurance were no longer significant.

Conclusions

Personal history is the strongest factor associated with breast MRI use. However, whereas race, history of benign biopsy, and perceived risk were independently associated with MRI use, family history was not. These findings call into question whether current practice patterns follow evidence-based guidelines.

Presented as an oral presentation at the meeting of the Society of Surgical Oncology, Orlando, FL, March 23, 2012.