Radiant energy – Radiation controlling means
Reexamination Certificate
2007-03-27
2009-06-23
Nguyen, Kiet T (Department: 2881)
Radiant energy
Radiation controlling means
C250S494100
Reexamination Certificate
active
07550752
ABSTRACT:
Treatment planning methods are provided that determine the variability of relative biological effectiveness (RBE) along a beam line and calculate, among other things, what intensity of hadron beam such as a proton or a carbon ion beam should be applied to achieve a desired biological dose at treatment site of a patient afflicted with a medical condition. Typically, three or four RBE values at three or four corresponding spacially-dispersed intervals along the beam line are calculated. In one embodiment, two RBE values for the spread-out Bragg peak (SOBP) region of the treatment site; one for the proximal section and one for the declining distal section is calculated. A third and different RBE value may be determined for the distal edge region of the SOBP. A fourth value may also be calculated for a pre-SOBP region.
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Britten Richard A.
Keppel Cynthia E.
Nazaryan Vahagn R.
Hampton University
McGuireWoods LLP
Nguyen Kiet T
LandOfFree
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