Modular DBT™ Phantom - Gammex
Quality Control for Digital Breast Tomosynthesis Systems
Routine & Daily QC

Thoroughly test 2D Mammography and 3D Tomosynthesis system performance. Evaluate image quality and quantify targets in reconstructed planar images. Routine and Daily QC. Flexible design ensures efficiency. Includes 6 mm of modules standard with rounded edge to decrease artifacts. Add modules as protocols continue to develop. Hammerstein composition. Uniform modules of breast-glandular and breast-adipose tissue mimicking materials are optional. This product includes a 5-year warranty.

The Modular DBT Phantom by Gammex was developed in collaboration with medical physicists to support quality control for Tomosynthesis and Digital Mammography systems. A range of simple to complex targets are precisely placed within tissue-equivalent breast material that is 50% breastglandular and 50% breast-adipose3. This uniquely flexible phantom design includes modules that assess Image Quality to Modulation Transfer Function (MTF) tests.

Save time and simplify Tomosynthesis QC

The phantom is designed for acceptance testing, routine QC and research.

Modular DBT™ Phantom - Gammex - tomosynthesis image 1

Modular DBT™ Phantom - Gammex - phantom image 2
The Image Quality configuration provides an overall thickness of 6.5 cm
with specks, masses and fibers embedded on the central plane.


1 EUREF (European Reference Organization for Quality Assured Breast Screening and Diagnostic Services) Protocol version 1.01 for the Quality Control of the Physical and Technical Aspects of Digital Breast Tomosynthesis Systems.

2 International Electrotechnical Commission

3 Hammerstein R., Miller D., White D., et al; Absorbed Dose in Mammography; RADIOLOGY; 130:485-491.

Adaptable for Image Quality to MTF tests Evaluate the entire imaging chain
Modular DBT™ Phantom - Gammex - tomosynthesis image 2
Tomosynthesis reconstructed image shows modules with objects
including tungsten BBs and wires, and barium-filled grooves.

Modular DBT™ Phantom - Gammex - phantom image 3
Modular DBT Phantom shown with optional breast-glandular
and breast-adipose tissue-mimicking materials.

Modular DBT™ Phantom - Gammex - phantom image 4
The numbered barium-filled grooves help measure missing tissue detection.

Modular DBT™ Phantom - Gammex - phantom optional 1
Modular DBT™ Phantom - Gammex - phantom optional 2
Optional breast-glandular and breast-adipose homogeneous modules are available.


The Modular DBT Phantom is backed by a 5-year warranty and is available in several configurations. Included are several target modules and blanks, the back plate assembly, a user guide and a custom hard-sided waterproof case.

Module Name Target Characteristics Module Thickness (mm)
Image Quality Specks, masses, fibers. See specifications below. 15
Missing Tissue Detection Barium-filled grooves, 1 mm x 0.5 mm,
sized from 0 mm to 15 mm
MTF, LSF 2 tungsten wires, 25 micron DIA 10
CNR 1100 aluminum alloy sheet, 0.1 mm thick, 45° angle 5 (10 total)
Rounded Edge No targets 20
2D and 3D Accuracy 14 tungsten BBs, 0.279 mm DIA, aligned in X, Y and Z-axis 15
Breast Blank No targets 5, 10, 20
Breast-Glandular Blank No targets 10, 20
Breast-Adipose Blank No targets 10, 20

All modules are epoxy resin-based Hammerstein composition, with dimensions of 180 mm x 100 mm.

Image Quality Module Test Object Specifications

The phantom configuration for Image Quality tests includes the Image Quality and Missing Tissue Detection modules, plus several blank modules. This configuration has an overall thickness of 6.5 cm.

Fiber Diameter (mm) Speck Diameter, Glass Sphere (mm) Mass Thickness (mm)
0.89 ± 0.05 0.33 ± 0.0100 1.00 ± 0.05
0.75 ± 0.03 0.28 ± 0.0083 0.75 ± 0.05
0.61 ± 0.03 0.23 ± 0.0069 0.50 ± 0.05
0.54 ± 0.03 0.20 ± 0.0059 0.38 ± 0.04
0.40 ± 0.03 0.17 ± 0.0084 0.25 ± 0.03
0.30 ± 0.03 0.14 ± 0.0070 0.20 ± 0.02
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