Radiation Therapy
Electron Density Phantom
Nuclear Associates Model 76-462
•
Can be configured to simulate
head or abdomen
•
Manufactured from durable epoxy
•
Tissue-equivalent plugs can be
positioned at 17 different locations
within the scan field
•
Special marker plugs enable quick
assessment of distance registration
•
All material accurately simulate
indicated tissue within the
diagnostic energy range
•
Includes a rugged carrying case
Introduction
The Electron Density Phantom (Model 76-462) is used in CT (computed tomography) treatment planning. The accuracy of radiation
oncology treatment planning systems is heavily dependent upon precise CT analysis of the patient anatomy which is to be irradiated.
Physicists performing treatment planning need accurate tools to evaluate CT scan data, correct for inhomogeneities and to document
the relationship between CT number and tissue electron density. The Electron Density Phantom is designed to meet this requirement.
Specifications
Material
Epoxy resin
Weight
15 lb (6.8 kg)
Available model(s)
76-462
Electron Density Phantom
Physical
density
Electron density
per cc x 1023
Electron density
relative to H
2
O
Phantom body
(water equivalent)
1.018
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Inserts
Water in syringe
1.000
3.340
1.000
Lung (inhale)
0.217
0.709
0.212
Lung (exhale)
0.508
1.673
0.500
Breast (50/50)
0.99
3.267
0.977
Dense bone,
800 mg/cc HA
1.575
4.894
1.464
Trabecular bone,
200 mg/cc HA
1.159
3.725
1.115
Liver
1.0709
3.514
1.052
Muscle
1.061
3.480
1.041
Adipose
0.967
3.180
0.951
