Breast Cancer Clinical Trial
Official title:
Comparison of Positron Emission Mammography and Contrast-enhanced Breast MRI in Women With a High Suspicion of Breast Cancer
The hypothesis of this study is that positron emission mammography will provide comparable sensitivity to contrast-enhanced breast MRI in women with a high suspicion of breast cancer. The aim of this study is to determine the sensitivity of Positron Emission Mammography (PEM) relative to that of Contrast-enhanced breast MRI (CE-MRI) in women with a high suspicion of breast cancer
Study Overview: The study population will comprise 150 women with a BI-RAD 5 or 6 finding on recent imaging who are scheduled for contrast enhanced breast MRI. Recruitment will be from the pool of patients scheduled for an MRI in the Department of Radiology at Mayo Clinic Rochester. All patients will have a PEM study within 5 business days of the clinically indicated MRI. Subjects must meet the following eligibility criteria: 1. Recent imaging study (mammogram, tomosynthesis, MBI or ultrasound) interpreted as highly suggestive of malignancy or a known biopsy proven malignancy [Breast Imaging Reporting and Data System (BI-RADS) Category 5 or 6] 2. Scheduled to undergo or has recently undergone a contrast-enhanced breast MRI 3. Age 25 or older The interpretation will be performed by different study radiologists blinded to the results of the other study. Prior breast imaging studies (mammography, tomosynthesis, MBI and ultrasound) and medical record will be available to the interpreting physician. Following the separate interpretations, an integrated interpretation of the MRI and PEM images will be performed to match any lesions seen and determine final clinical management of the patient. Reference standard will be surgical pathology or biopsy. For findings that were not resolved through biopsy or surgery, follow up data, including any imaging and / or biopsies performed in the 365 day period following study entry (date of the study PEM) will be collected through medical record review (and patient interview for those who do not return for further clinical management). The primary analysis is to compare the PEM diagnostic yield to the MRI diagnostic yield, which is considered the standard for this trial. The primary analysis will use the observed MRI diagnostic yield as the control value. If the 95% Confidence Interval (CI) for the PEM diagnostic yield lies entirely below the MRI diagnostic yield value, PEM will be deemed inferior to MRI for detecting breast cancer in this patient population. If the 95% CI for the PEM diagnostic yield contains the MRI diagnostic yield value, PEM will be deemed equivalent to MRI for detecting breast cancer. ;
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