US 7,450,687 B2
Method for verification of intensity modulated radiation therapy
Inhwan Yeo, Voorhees, N.J. (US); and Brian Wang, Merchantville, N.J. (US)
Assigned to University of Medicine and Dentistry of New Jersey, New Brunswick, N.J. (US)
Filed on Sep. 29, 2006, as Appl. No. 11/529,906.
Claims priority of provisional application 60/721759, filed on Sep. 29, 2005.
Prior Publication US 2007/0071169 A1, Mar. 29, 2007
Int. Cl. A61N 5/10 (2006.01)
U.S. Cl. 378—65 20 Claims
OG exemplary drawing
 
1. A method for verifying radiation therapy in a therapeutic x-ray delivery system for transmitting radiation doses in the form of an x-ray beam or beam segments, said method comprising the steps of:
inversely calculating the radiation dose received by a phantom or patient comprising the step of solving the following equation:
P=RPRE−1E
where P is the vector of P, P is the dose in a phantom, RP is the matrix of RP (beam-to-phantom Response), RE−1 is the inverse matrix of RE (beam-to-EPID Response), and E is the vector of E, and E is the measured dose in EPID.