Because CT scans are used to correct for tissue inhomogeneities in radiation therapy treatment planning, it’s important to obtain a precise relationship between CT number (in Hounsfield units) and electron densities. The Electron Density Phantom enables precise correlation of CT data to electron density of various tissues and is manufactured from CIRS tissue equivalent materials.
Tissue Equivalent Technology
The phantom consists of two nested disks made from Plastic Water®-LR. The disks can represent both head and abdomen configurations. Nine different tissue equivalent electron density plugs can be positioned at 17 locations within the scan field. Included is a vial plug that can be filled with any fluid. Optional distance marker plugs enable quick assessment of the CT scanner’s distance measurement accuracy.
Improved Accuracy
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 density. To improve the accuracy of your treatment planning, consider the Electron Density Phantom.
Features:
Evaluate CT scan data
Correct for inhomogeneities
Document relationship between CT number and tissue electron density
Simulate indicated tissue within the diagnostic energy range
Quickly assess distance registration
Dimensions
Electron Density Head Insert: Ø 180 mm x 50 mm (Ø x D) Electron Density Body without Head Insert: 330 mm x 270 mm x 50 mm (W x H x D)
Weight
Electron Density Head Insert: ≈ 0.950 kg Electron Density Body without Head Insert: ≈ 2.1 kg
Materials
Water and Tissue Equivalent Epoxy Resins
Items Included with CIRS Model 062M
Qty
Part No.
Description
Physical Density, g/cc
Electron Density, x 1023 electrons/ cc
RED (Relative to H2O)
1x
062MA-01
Electron Density Head Insert
1.029
3.333
0.998
1x
062MA-02
Electron Density Body without Head Insert
1.029
3.333
0.998
2x
062A-04
Lung (Inhale) Equivalent Electron Density Plug
0.205
0.668
0.200
2x
062A-05
Lung (Exhale) Equivalent Electron Density Plug
0.507
1.658
0.496
2x
062A-06
Breast (50% Gland / 50% Adipose) Equivalent Electron Density Plug
0.99
3.261
0.976
2x
062A-08
Solid Trabecular Bone (200 mg/cc HA) Equivalent Electron Density Plug
1.16
3.730
1.117
2x
062A-09
Liver Equivalent Electron Density Plug
1.07
3.516
1.052
2x
062A-10
Muscle Equivalent Electron Density Plug
1.06
3.483
1.043
2x
062A-11
Adipose Equivalent Electron Density Plug
0.96
3.171
0.949
2x
062A-15
Solid Dense Bone (800 mg/cc HA) Equivalent Electron Density Plug
1.53
4.862
1.456
1x
062A-27
Solid Dense Bone (1250 mg/cc HA) Equivalent Electron Density Plug
1.82
5.663
1.695
1x
062MA-39
Water-fillable Electron Density Plug, Ø 1” removable vial inside (Real water data provided)
1.00
3.340
1.000
1x
062M-30
Set of 2 Feet for Model 062M
1x
062M-40
Soft Carry Case for Model 062M
1x
--
User Guide
Optional Accessories
Qty
Part No.
Description
Physical Density, g/cc
Electron Density, x 1023 electrons/ cc
RED (Relative to H2O)
--
062MA-07
800 mg/cc HA in Water Equivalent - Core Insert
1.53
4.862
1.456
--
062MA-12
Titanium Rod Core Insert
4.51
12.475
3.735
--
062MA-13
Distance Marker Insert
1.029
3.333
0.998
--
062MA-16
Water Equivalent Insert
1.029
3.333
0.998
--
062MA-17
1000 mg/cc HA in Water Equivalent - Core Insert
1.66
5.243
1.570
--
062MA-18
1250 mg/cc HA in Water Equivalent - Core Insert
1.82
5.663
1.695
--
062MA-19
ICRU Cortical Bone Equivalent Core Insert
1.91
5.915
1.771
--
062MA-20
1500 mg/cc HA in Water Equivalent - Core Insert
1.99
6.134
1.837
--
062MA-21
1750 mg/cc HA in Water Equivalent - Core Insert
2.15
6.600
1.976
--
062A-26
Solid Dense Bone (1000 mg/cc HA) Equivalent Plug
1.66
5.243
1.570
--
062A-28
Solid Dense Bone (1500 mg/cc HA) Equivalent Plug
1.99
6.134
1.837
--
062A-29
Solid Dense Bone (1750 mg/cc HA) Equivalent Plug
2.15
6.600
1.976
--
062MA-41
Water Equivalent Material Surrounding Ø 6.4 mm Stainless Steel (Alloy 20) Rod Core Plug
8.03
23.101
6.917
--
062MA-42
Water Equivalent Material Surrounding Ø 6.4 mm Aluminum Rod Core Plug
2.70
8.008
2.398
Electron Density Phantoms: Electron Density Phantom
Because CT scans are used to correct for tissue inhomogeneities in radiation therapy treatment planning, it’s important to obtain a precise relationship between CT number (in Hounsfield units) and electron densities. The Electron Density Phantom enables precise correlation of CT data to electron density of various tissues and is manufactured from CIRS tissue equivalent materials.
Tissue Equivalent Technology
The phantom consists of two nested disks made from Plastic Water®-LR. The disks can represent both head and abdomen configurations. Nine different tissue equivalent electron density plugs can be positioned at 17 locations within the scan field. Included is a vial plug that can be filled with any fluid. Optional distance marker plugs enable quick assessment of the CT scanner’s distance measurement accuracy.
Improved Accuracy
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 density. To improve the accuracy of your treatment planning, consider the Electron Density Phantom.
Features:
Evaluate CT scan data
Correct for inhomogeneities
Document relationship between CT number and tissue electron density
Simulate indicated tissue within the diagnostic energy range
Quickly assess distance registration
Dimensions
Electron Density Head Insert: Ø 180 mm x 50 mm (Ø x D) Electron Density Body without Head Insert: 330 mm x 270 mm x 50 mm (W x H x D)
Weight
Electron Density Head Insert: ≈ 0.950 kg Electron Density Body without Head Insert: ≈ 2.1 kg
Materials
Water and Tissue Equivalent Epoxy Resins
Items Included with CIRS Model 062M
Qty
Part No.
Description
Physical Density, g/cc
Electron Density, x 1023 electrons/ cc
RED (Relative to H2O)
1x
062MA-01
Electron Density Head Insert
1.029
3.333
0.998
1x
062MA-02
Electron Density Body without Head Insert
1.029
3.333
0.998
2x
062A-04
Lung (Inhale) Equivalent Electron Density Plug
0.205
0.668
0.200
2x
062A-05
Lung (Exhale) Equivalent Electron Density Plug
0.507
1.658
0.496
2x
062A-06
Breast (50% Gland / 50% Adipose) Equivalent Electron Density Plug
0.99
3.261
0.976
2x
062A-08
Solid Trabecular Bone (200 mg/cc HA) Equivalent Electron Density Plug
1.16
3.730
1.117
2x
062A-09
Liver Equivalent Electron Density Plug
1.07
3.516
1.052
2x
062A-10
Muscle Equivalent Electron Density Plug
1.06
3.483
1.043
2x
062A-11
Adipose Equivalent Electron Density Plug
0.96
3.171
0.949
2x
062A-15
Solid Dense Bone (800 mg/cc HA) Equivalent Electron Density Plug
1.53
4.862
1.456
1x
062A-27
Solid Dense Bone (1250 mg/cc HA) Equivalent Electron Density Plug
1.82
5.663
1.695
1x
062MA-39
Water-fillable Electron Density Plug, Ø 1” removable vial inside (Real water data provided)
1.00
3.340
1.000
1x
062M-30
Set of 2 Feet for Model 062M
1x
062M-40
Soft Carry Case for Model 062M
1x
--
User Guide
Optional Accessories
Qty
Part No.
Description
Physical Density, g/cc
Electron Density, x 1023 electrons/ cc
RED (Relative to H2O)
--
062MA-07
800 mg/cc HA in Water Equivalent - Core Insert
1.53
4.862
1.456
--
062MA-12
Titanium Rod Core Insert
4.51
12.475
3.735
--
062MA-13
Distance Marker Insert
1.029
3.333
0.998
--
062MA-16
Water Equivalent Insert
1.029
3.333
0.998
--
062MA-17
1000 mg/cc HA in Water Equivalent - Core Insert
1.66
5.243
1.570
--
062MA-18
1250 mg/cc HA in Water Equivalent - Core Insert
1.82
5.663
1.695
--
062MA-19
ICRU Cortical Bone Equivalent Core Insert
1.91
5.915
1.771
--
062MA-20
1500 mg/cc HA in Water Equivalent - Core Insert
1.99
6.134
1.837
--
062MA-21
1750 mg/cc HA in Water Equivalent - Core Insert
2.15
6.600
1.976
--
062A-26
Solid Dense Bone (1000 mg/cc HA) Equivalent Plug
1.66
5.243
1.570
--
062A-28
Solid Dense Bone (1500 mg/cc HA) Equivalent Plug
1.99
6.134
1.837
--
062A-29
Solid Dense Bone (1750 mg/cc HA) Equivalent Plug
2.15
6.600
1.976
--
062MA-41
Water Equivalent Material Surrounding Ø 6.4 mm Stainless Steel (Alloy 20) Rod Core Plug
8.03
23.101
6.917
--
062MA-42
Water Equivalent Material Surrounding Ø 6.4 mm Aluminum Rod Core Plug
2.70
8.008
2.398
Electron Density Phantoms: Multi-Energy CT Phantom
Easily test material discrimination using solid rods representing iodine, calcium, blood, adipose, and more. Patented rod markers enable automated analysis to streamline this process.
Ensure Scanner Efficacy & Consistency
Test the efficacy of your clinical protocols for multi-energy analysis and compare consistency and stability across different scanners.
Comprehensive Testing of Scanner Performance
The Multi-Energy CT Phantom enables robust evaluation of scanner performance, including:
Material discrimination testing using solid rods representing iodine, calcium, blood, adipose, and more
Ensuring efficacy of clinical protocols for multi-energy analysis
Verifying quantitative accuracy of multi-energy scans
Comparing consistency and stability across different scanners
Checking for artifacts in an extended field-of-view
Testing in head (20 cm) and body (40cm x 30 cm) configurations
Automating analysis with patent-pending rod marker technology
In-plane Dimensions
40.0 cm x 30.0 cm
Depth
16.5 cm, up to 26.5 cm with extension plates
Diameter of Removable Head Section
20.0 cm
Material
HE CT Solid Water®
Interchangeable Inserts
27 solid inserts plus 1 true water container, each tagged with a CT-visible rod identification code
8 HE Iodine Inserts with Variable Concentrations
Concentrations of 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 15.0, and 20.0 mg/mL
3 Iodine Inserts with Variable Diameters
5.0 mg/mL concentration at diameters of 2.0, 5.0, and 10.0 mm
8 HE Calcium Inserts with Variable Concentrations
Concentrations of 0, 5, 10, 20, 50,100, 200, and 300 mg/mL
3 Blood [iron] Inserts
Blood-mimicking material at relative electron densities of 1.03, 1.07, and 1.10
2 Blood [iron] with Iodine Inserts
Blood-mimicking material plus iodine at 2.0 and 4.0 mg/mL
3 Tissue-Mimicking Inserts
High-Equivalency Brain, High-Equivalency Adipose, High-Equivalency CT Solid Water
Weight
15.5 kg
Case
Wheeled case is included
Stand
Stand is included
Electron Density Phantoms: Advanced Electron Density Phantom
Patented rod markers uniquely identify each material in a CT scan and automatically generate CT-to-density tables with capabilities in the RapidCHECK™ software. Rod markers eliminate the risk of misplaced rods, rotated phantoms, or incorrect selection of ROIs — further fool-proofing this analysis.
Sized for Wide-Beam Applications
A larger phantom body diameter supports evaluation of cone-beam CT and fan-beam CT scanners, with a removable section to support head and small body protocols.
Superior Tissue Equivalence
Phantom base and rods meet medical standards ICRU-44 and ICRP for human tissue densities, giving users additional assurance that the calculation of energy to be put into the patient is highly precise.
Compatible with Any Ion Chamber
The Advanced Electron Density Phantom is compatible with any ion chamber. Upon ordering, please specify which ion chamber you intend to use.
Highly Accurate CT-to-Density Conversion
Rods within the Advanced Electron Density Phantom mimic water, cortical bone, inner bone, and liver at a high equivalency to medical standards (ICRU-44 and ICRP) for human tissue densities, offering confidence that CT values will be optimally converted to treatment energy values.
Analysis Automation
RapidCHECK software automatically identifies the rods in the CT scan and converts the values. Software image registration further removes human errors by uncovering any discrepancies in the phantom’s position (e.g., rotated or translated head, head rotated relative to the body).
Once completed, easily export results to CSV or Excel.
