X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2008-10-14
2011-11-01
Song, Hoon (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S064000
Reexamination Certificate
active
08050384
ABSTRACT:
A small tabletop stationary five-degree of freedom device such as a “robot” is used to define the treatment region by tracing the region under direct visualization and then to precisely deliver the treatment plan created by an automatic planning system by positioning a single low energy radiation source, or a plurality of low energy sources connected to each other in a predetermined parallel or similar geometry, each source equipped with blocking and attenuation mechanisms, at a plurality of positions in a planar fashion across or through a selected treatment field, thereby delivering a plurality of parallel overlapping beams indexed on a millimeter or submillimeter grid such that a concentration of dose is achieved at a variable depth in tissue relative to the dose where the radiation first enters the tissue and can be used to treat regions on or below the surface of tissue, in a cavity and underlying region created following a surgical resection, on or below the surface of an internal cavity, hollow viscus, or lumen, or deep in tissue adjacent to an inserted probe or conduit or catheter. By generating a plurality of overlapping beams indexed on a millimeter or submillimeter grid that converge on a target volume loaded with gold nanoparticles, a tumorcidal dose of radiation can be delivered in as little as a single session to tumor cells but not to normal cells within or outside the treatment volume. This approach also makes it possible to deliver serial radiosurgical treatments.
REFERENCES:
patent: 2003/0161434 (2003-08-01), Rand et al.
Carol Mark Philip
Heanue Joseph A.
Song Hoon
Triple Ring Technologies, Inc.
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