Mammo 156D Stereo Phantom

With CIRS now part of Sun Nuclear, we are collaborating to provide optimal Quality Management solutions for Diagnostic Imaging and Radiation Therapy.

The Digital Mammography Accreditation Phantom (Model 015DM), is no longer being manufactured or sold by CIRS. We are pleased to offer the following suitable alternative from Sun Nuclear.

Biopsy and Localization

Like the Mammo 156 Phantom, the Mammo 156D Stereo Phantom is ACR-accredited, and backed by thirty-plus years servicing the mammography QA industry. The phantom supports monitoring of mammography systems used for biopsy and localization, and simulates radiographic characteristics of compressed breast tissue.

Evaluate Image Quality 

The Mammo 156D Stereo Phantom, by design, contains test objects that are both visible on any system and difficult to see on the best stereotactic mammography systems. 

  • Quickly detect objects from 0.20 to 1.00 mm — visible on any system, but, by design, difficult to see on the best stereotactic mammography systems
  • Comply with MQSA (FDA) and ACR1 requirements

 1 ACR Mammography Accreditation Program Testing Instructions (

Product manufactured by Sun Nuclear; CIRS is now part of Sun Nuclear, a Mirion Medical company.

Data Sheet

Mammo 156D Stereo Phantom: Data Sheet


MaterialsWax and acrylic equivalent to 4.2 cm thick compressed breast tissue. 50% adipose & 50% glandular. Fibers, specks and masses follow ACR specifications.
Nylon Fibers (monofilament) DIA (mm)0.40, 0.54, 0.74, 0.93
Micro-calcifications (Aluminum Oxide) DIA (mm)0.20, 0.24, 0.32, 0.54
Masses DIA (mm)0.25, 0.50, 0.75, 1.00
Dimensions (L x W x H)6.7 x 6.8 x 6.1 cm
CaseOptional soft-sided case with foam insert, with 1-year warranty