Contrast Enhanced Mammography: Dual Energy Units, Injectors and Workflow

How contrast enhanced mammography works

After an intravenous injection of iodinated contrast, the breast is compressed and two exposures are made in quick succession: a low-energy image, similar to a standard mammogram, and a high-energy image. The two are combined by software to subtract background tissue and highlight iodine uptake, producing a recombined image that shows enhancement.

The clinical indications, contraindications, contrast volumes and timing are defined by your radiologists and local protocols and are outside the scope of an equipment guide. What matters for a buyer is that the system can switch beam parameters between the two exposures, display both and the recombined image, and record the contrast administered.

Dual energy mammography: unit requirements

A dual energy mammography mode needs the tube, filtration and software to support both exposures. Not every unit offers it, and where it is available it is often an option or a licence. The Villa Melody IIID TS lists an optional Dual Energy mode, and the base Melody IIID can be upgraded in the field to Dual Energy.

When specifying the mode, ask how the image pair is acquired, how the recombined image is generated, whether the dose of the combined exposure is displayed and reported, and which DICOM objects reach the PACS. Ask also how the mode coexists with tomosynthesis on the same unit.

Injector requirements for contrast enhanced mammography biopsy and imaging

Contrast enhanced mammography needs a controlled injection, usually by a power injector so that volume and flow rate are reproducible. A mammography room has limited space and no MR environment, but it does need a compact, mobile injector and a clear cable policy. The Ulrich Medical Max 3 is intended for MRI, PET-MRI and contrast-enhanced mammography (CEDM/CESM).

Its listed features include two contrast connections and one saline connection, a 24-hour Easy-Click-Cassette with RFID reuse protection, air detection in the patient tubing, battery operation and Wi-Fi link to the terminal. Mammography contrast containers up to 2 x 250 ml are specified, and the unit measures 530 x 530 x 1,372 mm and weighs about 40 kg. The Max 2M offers a one-contrast configuration for lower volumes. For contrast-guided biopsy, check that the workflow, room layout and sterile technique are agreed with your radiologists.

• Compact, mobile base that fits a mammography room
• Cordless operation to avoid cable hazards
• Air detection and documented injection parameters
• Container sizes that match the contrast agents your department uses

Tomosynthesis vs contrast mammogram, and 3D mammography vs breast MRI

Tomosynthesis and contrast enhanced mammography answer different questions. Tomosynthesis improves the anatomical view by separating overlapping tissue, while CEM adds information about vascularity and enhancement. Departments with both options on one unit can choose per patient, according to their pathway.

Breast MRI remains a reference method for many indications, but it needs a magnet, longer slots and a different cost base. CEM can be an alternative where MRI is unavailable or not suitable, and the decision lies with your clinicians. For a wider view see our guide to tomosynthesis for dense breasts.

Planning checklist and next step

Plan for staff training, emergency equipment and a protocol covering contrast safety, since intravenous iodinated contrast is used. Confirm approval requirements for contrast use with your facility's governance, and confirm current device and facility rules with the relevant UAE authorities. A temperature-controlled contrast warming cabinet may also be useful for your wider imaging service.

Beckfinity's specialists can configure the mammography unit and the injector together and advise on room preparation. Request a quote or consultation to scope a contrast enhanced mammography service.