Advanced Electron Density Phantom

Gain confidence in the accuracy of your CT-conversion to-Electron Density Calibration or HU.

Advanced Electron Density Phantom Overview

Accurate Tissue-Equivalent CT-conversion to-Electron Density Calibration or HU.
Expanded phantom size for wide CBCT and Fan beam systems.
Compatible with any ion chamber and film.
Includes imaging resolution pattern insert for added image quality tests.
Includes custom wheeled case and stand.

Versatility

Includes 32 ion chamber cavities and 20 density insert cavities with 13 density plugs. Each phantom comes with a full set of water equivalent and tissue equivalent inserts for filling these cavities.

Protocol Compliance

Adheres to AAPM Task Group 66 for monthly CT number accuracy and annual electron density phantom checks. Tissue equivalent materials meet ICRU-44 and ICRP standards for human tissue mimicry.

Dose Measurement

Works with any ion chamber. By simply rotating the phantom on its base, point measurements can be taken with 0.5 cm resolution along any transverse plane through the center of the phantom. Also includes slot for film measurements.

Water and Tissue Equivalent CT-to-Density Conversion

Interchangeable inserts simulate water within 0.5%, two types of bone, and soft tissue inserts with high accuracy ensuring optimal CT value conversion to treatment energy values that conform to medical standards (ICRU-44 and ICRP).

Dimensions

Diameter

30 cm
Thickness

18 cm

Density

Physical Density

1.047 g/cc ± 0.1 g/cc
Electron Density

0.562 ± 0.003 e/g/cc

Cavities

Number ion chamber cavities

32
Number density insert cavities

20
Location

Density insert cavities located at 6.5 cm and 11 cm radius

Features

Water equivalent
Film plane with reference markers on the top half
Configure with or without heterogeneities
20 cavities for density plugs located at 6.5 cm and 11.0 cm
radius
Alignment scribe lines every 10 degrees
Physical density of 1.047 g/cc ± 0.1 g/c

Standard Inserts (Material & Physical Density (g/cm3)/Electron Density Relative to Water)

455 Lung LN-300

Physical Density: 0.29 g/cm3 & Electron Density Relative to Water: 0.28
485 Lung LN-450

Physical Density: 0.45 g/cm3 & Electron Density Relative to Water: 0.44
1553 HE Gen Adipose

Physical Density: 0.96 g/cm3 & Electron Density Relative to Water: 0.94
1454 Breast 50:50

Physical Density: 0.98 g/cm3 & Electron Density Relative to Water: 0.97
4- 1451 HE CT Solid Water Inserts

Physical Density: 1.02 g/cm3 & Electron Density Relative to Water: 1.00
1481 HE Brain

Physical Density: 1.05 g/cm3 & Electron Density Relative to Water: 1.02
1482 HE Liver

Physical Density: 1.08 g/cm3 & Electron Density Relative to Water: 1.02
1456 HE Inner Bone

Physical Density: 1.21 g/cm3 & Electron Density Relative to Water: 1.16
484 CB2 + 30% CaCO3

Physical Density: 1.33 g/cm3 & Electron Density Relative to Water: 1.27
480 CB2 + 50% CaCO3

Physical Density: 1.56 g/cm3 & Electron Density Relative to Water: 1.46
1450 HE Cortical Bone

Physical Density: 1.93 g/cm3 & Electron Density Relative to Water: 1.78
2 - True Water Inserts

Physical Density: -1.000- g/cm3 & Electron Density Relative to Water: -1.000