Inhomogeneity phantom mimicking body
like inhomogeneities for dose measurement
The IMRT Inhomogeneity Phantom is used to
verify basic data of a radiotherapy treatment planning system (TPS). The corrections of the TPS for inhomogeneities are verified by the phantom.
- Inserts are mimicking tissue, bone, lung
- Dose measurement with ionization chamber,
film or 2D-Array seven 29
- Inserts fit into a slab phantom
The IMRT Inhomogeneity Phantom is composed of a base plate and five inserts of four different materials Three inserts are mimicking inhomogeneities in the human body (1 x bone, 1 x tissue, 1 x lung). Two inserts are made of acrylic glass (PMMA).
The phantom can be placed on the bottom part of
the PTW Universal IMRT Phantom for use with
film or ionization chambers, or on the PTW 2D-
Array seven 29, or it can be placed on a 30 cm x 30
cm slab phantom.
The size of the Inhomogeneity Phantom is 30 cm
x 30 cm 0 2.5 cm. The inserts can be exchanged according to the users requirements. The IMRT Inhomogeneity Phantom is not a CT test phantom.
The Hounsfield units of the phantom must be determined by CT scan.
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