Contrast-enhanced spectral mammography (CESM) is done using the standard digital mammography equipment, with additional software that performs dual-energy image acquisition. The dataset is a collection of 2006 CESM images all high resolution with an average of 2355 x 1315 pixels. Each image with its corresponding manual annotation (breast composition, mass shape, mass margin, mass density, architectural distortion, asymmetries, calcification type, calcification distribution, mass enhancement pattern, non-mass enhancement pattern, non-mass enhancement distribution, and overall BIRADS assessment) is compiled into 1 Excel file. Moreover, full medical reports are provided for each case (DOCX) along with manual segmentation annotation for the abnormal findings in each image (CSV file).

Deep learning (DL) has a promising potential in reducing the workload of radiologists and helping them provide a more accurate diagnosis. However, fully annotated and large-sized datasets are required. In the past couple of years, public mammography datasets were released. These datasets contain digital mammography images only, and none include CESM images.

Acquisition protocol: 

Two minutes after intravenously injecting the patient with non-ionic low-osmolar iodinated contrast material (dose: 1.5 mL/kg), craniocaudal (CC) and mediolateral oblique (MLO) views are obtained. Each view comprises two exposures, one with low energy (peak kilo-voltage values ranging from 26 to 31kVp) and one with high energy (45 to 49 kVp). Low and high-energy images are then recombined and subtracted through appropriate image processing to suppress the background breast parenchyma. A complete examination is carried out in about 5-6 minutes.

Image preprocessing:

The images were converted from DICOM to JPEG using RadiAnt with best 100% image quality (lossless).