Surgeons Use Smartphones and 3D Printers to Guide Breast Reconstruction

Breast reconstruction surgery demands a sharp eye for symmetry. Now a team of researchers has shown that a consumer smartphone and a desktop 3D printer can produce something surgeons have never had: a sterilizable, patient-specific physical template that fits the operating room workflow. The work, published in BMC Plastic and Reconstructive Surgery, walks through a print-to-patient pipeline built entirely from off-the-shelf tools.

The Workflow in Four Steps

The process starts with a smartphone scan. During a routine preoperative visit, a clinician uses the TrueDepth camera built into an iPhone to capture the surface geometry of the healthy breast. The ScandyPro app reconstructs the surface from the infrared depth data in a matter of minutes. The file is then digitally mirrored to create the counterpart shape.

Next, a desktop fused-deposition modeling printer produces the template in flexible resin. The printed part is autoclaved for sterility and placed over the surgical flap in the operating room to guide tissue shaping in real time.

Why This Matters

Earlier attempts to introduce 3D printing into breast reconstruction have generally depended on CT angiography data or dedicated surface-imaging systems. Both carry real costs. CT-based workflows expose patients to additional radiation when the scan has not already been obtained for planning purposes. Specialized imaging platforms require expertise and equipment that many centers do not have at the point of care.

The smartphone approach removes both barriers. The TrueDepth sensor is already in the device. ScandyPro is a readily available app. No radiation, no proprietary scanner, and no specialized image segmentation step.

Accuracy Checked Against Professional Hardware

Before the team applied the method to patients, they validated it against a professional photogrammetry setup. A physical breast phantom was scanned using both the iPhone 12 protocol and a Canon DSLR with a 24mm lens processing images in Agisoft Metashape. The comparison showed the smartphone approach held up well enough to be clinically useful, which is the standard that matters here.

The proof-of-concept is not yet a standardized clinical tool. But the barrier to adoption is low: any center with a compatible iPhone and an FDM printer can pilot the workflow without waiting for capital approval or procurement cycles. If the method holds up in larger trials, it could bring a level of precision previously limited to major academic hospitals into smaller community practices.

Source: Bioengineer.org / BMC Plastic and Reconstructive Surgery