Apparatus for measuring absorption dose distribution
First Claim
1. An apparatus for measuring absorption dose distribution, said apparatus comprising:
- a phantom includinga plastic plate scintillator having surfaces and a thickness between the surfaces within a range from 0.15 to 1 mm, the thickness being determined by optical characteristics of the surfaces, limiting crosstalk in a direction perpendicular to thickness direction of the plastic plate scintillator to not more than 1 percent, and providing a spatial resolving power of 1 mm, andfirst and second plastic blocks positioned on opposite sides of said plastic plate scintillator in the direction of the thickness of said plastic plate scintillator, sandwiching said plastic plate scintillator, at least one of said first and second plastic blocks being transparent; and
an image analyzer for measuring intensity distribution of light emitted from said plastic plate scintillator when said phantom is irradiated with radiation.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for measuring absorption dose distribution may be used for radiotherapy, such as intensity modulated radiotherapy and radiosurgery. In the apparatus, measurement or evaluation of the distribution of the radiated dose within a phantom can be achieved accurately and in a relatively short length of time. The apparatus includes a phantom with a plastic plate scintillator having a thickness within the range of 0.15 to 1 mm and plastic blocks sandwiching the plastic scintillator, and an image analyzer. At least one of the plastic blocks is transparent and the image analyzer measures a pattern of intensity distribution of light emitted from the plastic scintillator when the phantom is irradiated.
-
Citations
14 Claims
-
1. An apparatus for measuring absorption dose distribution, said apparatus comprising:
-
a phantom including a plastic plate scintillator having surfaces and a thickness between the surfaces within a range from 0.15 to 1 mm, the thickness being determined by optical characteristics of the surfaces, limiting crosstalk in a direction perpendicular to thickness direction of the plastic plate scintillator to not more than 1 percent, and providing a spatial resolving power of 1 mm, and first and second plastic blocks positioned on opposite sides of said plastic plate scintillator in the direction of the thickness of said plastic plate scintillator, sandwiching said plastic plate scintillator, at least one of said first and second plastic blocks being transparent; and an image analyzer for measuring intensity distribution of light emitted from said plastic plate scintillator when said phantom is irradiated with radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification