Breast Cancer
Conditions
Keywords
Mammography, Screening, Diagnostic
Brief summary
The primary objective of this protocol is to collect the 2-dimensional (2D) screening and diagnostic images, and 3-dimensional (3D) Digital Breast Tomosynthesis (DBT) scans from patient mammography examinations acquired on various commercially available Full Field Digital Mammography (FFDM) systems and the Siemens Inspiration DBT system, respectively.
Detailed description
The image collection includes FFDM images and both raw and presentation data from the DBT system. The FFDM mammograms are performed using standard care screening or diagnostic mammography from various commercially available FFDM systems. All DBT images are acquired on the Inspiration DBT system specifically for the study, in addition to the clinically indicated screening mammograms. DBT images are read at the clinical sites and any DBT findings were investigated according to standard care.
Interventions
DEVICESIEMENS INSPIRATION DIGITAL BREAST TOMOSYNTHESIS (DBT) SYSTEM
DBT scan
Sponsors
Siemens Medical Solutions USA - CSG
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
30 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
All subjects enrolled into the collection study must: * Provide signed informed consent after receiving a verbal and written explanation of the purpose and nature of the study * be females, 40 years of age or older at the screening mammographic evaluation or age 30 or older presenting for a biopsy and have one of the following mammograms: o Normal cases at screening (BI-RADS® 1, 2 and 3): * have a screening mammogram that includes the four standard screening views (RCC, RMLO, LCC and LMLO), as well as have both MLO and CC DBT scans of each breast, o Actionable cases at screening (BI-RADS® 0, 4 or 5) with final BI-RADS® 1, 2, 3, 4 or 5: * have a screening mammogram with four SSVs and any clinically necessary diagnostic mammographic views, such as straight lateral projections, rolled, magnification view and spot compression views, and, both MLO and CC DBT scans of each breast plus 4 SSVs repeated at the diagnostic or biopsy visit if the screening images are unavailable or were acquired more than 45 days prior to DBT acquisition, * have supporting ground-truth documentation for the final BI-RADS® assessment as follows: * A one (1) year FFDM follow up without evidence of cancer for normal cases not undergoing biopsy * A six (6) or twelve (12) month FFDM follow up confirming benign status for biopsy proven benign cases * Pathology report for either benign or malignant biopsy finding
Exclusion criteria
Subjects with any of the following conditions or who have had the following procedures will be excluded from this study: * Pregnant women or women who believe they may be pregnant or are trying to become pregnant. * Mastectomy patients * Subjects who have had lumpectomy ≤ 5 years prior to the study entry * Inmates (in accordance with 45 CFR 46.306) or mentally disabled individuals * BI-RADS® Category 6 (e.g., for which the mammogram was performed for the purpose of planning cancer therapy) * BI-RADS® Category 4 or 5 without confirming pathology reports will be considered incomplete * Subjects with mammograms that lack the required views or with views judged to be technically inadequate will be considered incomplete and the cases will not be considered for the MRMC reader studies * Subjects being accrued from the screening population who know that they will not be in the United States or available for follow up mammograms in one year.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Efficacy Based on the Area Under the Receiver Operating Characteristic (ROC) Curve in Breasts Analyzed With DBT as an Adjunct to FFDM vs. FFDM Alone | 1 year | The primary objective of this study was to demonstrate the superiority of DBT and FFDM images together in comparison to FFDM images alone with respect to the ability of readers to detect and diagnose malignant lesions. A comparison of the breast-level ROC areas was used to evaluate the superiority of DBT as an adjunct to FFDM vs. FFDM alone. |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Mammography Exam Siemens DBT scan
SIEMENS INSPIRATION DIGITAL BREAST TOMOSYNTHESIS (DBT) SYSTEM: DBT scan | 764 |
| Total | 764 |
Baseline characteristics
| Characteristic | Mammography Exam |
|---|---|
| Age, Customized >= 30 years old < 40 | 12 participants |
| Age, Customized >= 40 years old | 752 participants |
| Region of Enrollment United States | 764 participants |
| Sex/Gender, Customized Female | 764 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | — / — |
| other Total, other adverse events | 1 / 764 |
| serious Total, serious adverse events | 2 / 764 |
Outcome results
Primary
Efficacy Based on the Area Under the Receiver Operating Characteristic (ROC) Curve in Breasts Analyzed With DBT as an Adjunct to FFDM vs. FFDM Alone
The primary objective of this study was to demonstrate the superiority of DBT and FFDM images together in comparison to FFDM images alone with respect to the ability of readers to detect and diagnose malignant lesions. A comparison of the breast-level ROC areas was used to evaluate the superiority of DBT as an adjunct to FFDM vs. FFDM alone.
Time frame: 1 year
Population: Per protocol 300 subjects were selected for analysis based on 89% power \& 5% type one error rate determination.
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| FFDM and DBT | Efficacy Based on the Area Under the Receiver Operating Characteristic (ROC) Curve in Breasts Analyzed With DBT as an Adjunct to FFDM vs. FFDM Alone | 0.8527 unitless | Standard Error 0.0268 |
| FFDM Only | Efficacy Based on the Area Under the Receiver Operating Characteristic (ROC) Curve in Breasts Analyzed With DBT as an Adjunct to FFDM vs. FFDM Alone | 0.7516 unitless | Standard Error 0.0281 |