IMRT Head and Neck Phantom CIRS 002HN
Complete QA from CT imaging to dose verification
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The CIRS Model 002HN IMRT phantom is designed to address the complex issues surrounding commissioning and comparison of treatment planning systems and verification of individual patient plans and delivery.

The CIRS 002HN phantom properly represents human head and neck anatomy in shape, proportion and structure as well as density. This enables thorough analysis of both the treatment planning and delivery systems. The phantom is constructed of proprietary tissue equivalent epoxy materials. Linear attenuations of the simulated tissues are within 1% of actual attenuation for bone and water from 50 keV to 15 MeV.

The phantom is circular in shape, approximates the size of an average patient. Tissue equivalent interchangeable rod inserts for ionization chambers allow for point dose measurements in multiple planes in the phantom and film calibration.* The phantom also supports film dosimetry with not only standard radiographic films but also GafChromic® media. Additional inserts are available to support a variety of other detectors including TLD’s, MOSFET, and diodes.

The Model 002HN accommodates one Ready Pack™ 10" x 12" films in transverse orientation, two radiochromic or radiographic 10 x 10 cm films in transverse orientation and a stack of thirteen radiochromic films pre-cut to 63.5 x 63.5 mm in three different orientations.

The Model 002HN has an optional four Electron Density reference plugs which can be interchanged in five separate locations within the phantom. The surface of the phantom is etched with grooves to ensure proper orientation of the CT slices and accurate film to plan registration. An optional cranial bone ring is also available.

Features IMRT Verification System

CIRS IMRT phantoms are manufactured from tissue equivalent materials that mimic within 1% from 50 keV to 15 MeV for accurate simulation from CT planning to treatment delivery. The interchangeable rod design allows the phantom to accommodate a multitude of dose measurement devices such as ion chambers, TLD, diodes and MOSFET's in the same location within the phantom. Phantom cross sections accommodate GafChromic® or standard ready-pack films.

Refer to the cavity and plug code list for available chamber cavities.

*The CIRS line of IMRT phantoms is compatible with the RIT 113 software for film to plan analysis. GafChromic® is a registered trademark of International Specialty Products, Wayne, NJ.

CIRS 002HN Specifications
Specifications
Overall Dimensions 43.2 cm x 33 cm x 20.3 cm (17" x 13" x 8")
Weight 10.5 kg (28 lb)
Materials Phantom Body: Tissue Equivalent Epoxy Materials
Inserts: CIRS Tissue Equivalent Materials (epoxy resin based)
Model 002HN Includes (1) Water equivalent homogeneous section drilled to accommodate rod inserts (15 cm)
(2) Film slabs, 1 cm, film cavity 10 cm x 10 cm with a set of CT to film fiducial markers
(1) CT to film fiducial markers in film slabs
(1) Cavity slab, 6.34 cm, to accommodate film stack or gel cassette
(1) Film Stack for small volume 3D image reconstruction
(2) Spacer slabs, 2 cm
(2) Spacer slab, 1 cm (002SS-HN)
(1) End slab, 1 cm (002SS-HN)
(1) End slab, ~1.6 cm
(5) Water equivalent solid rod inserts (002RW-S)
(1) Bone equivalent solid rod inserts (002RB-S)
(1) Alignment Base
(1) Holding device
Insert Options *Customers are encouraged to complete their order with the purchase of
at least one (1) of each insert option listed below:

002RW-CVXX-XX - Water equivalent rod insert with ion chamber cavity
002RB-CVXX-XX - Bone equivalent rod insert with ion chamber cavity

Refer to separate CIRS cavity and plug code list for available chamber cavities.
Additional Options 002GC - Gel dosimetry cassette
002SPH - Water equivalent rods for TLD's (set of 5 rods length 5cm)
002ED - Electron density reference plugs, set of 4 (lung, bone, muscle, adipose)
002CTF - Set of CT to film fiducial markers for additional interfaces
9503 - Case for Model 002HN


Publication References

Altman MB, Vesper BJ, Smith BD, et al. Characterization of a novel phantom for three-dimensional in vitro cell experiments. Physics in Medicine and Biology. 2009; 54(5):N75-N82.

Bragg CM, Wingate K, Conway J. Clinical implications of the anisotropic analytical algorithm for IMRT treatment planning and verification. Radiotherapy and Oncology. 2008; 86(2):276-284.
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