The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2013
Filed:
Oct. 24, 2007
Kevin Brown, West Sussex, GB;
Ralph Streamer, West Sussex, GB;
Paul Boxall, Crawley, GB;
Duncan Bourne, Surrey, GB;
Christopher James Gibson, Surrey, GB;
Kevin Brown, West Sussex, GB;
Ralph Streamer, West Sussex, GB;
Paul Boxall, Crawley, GB;
Duncan Bourne, Surrey, GB;
Christopher James Gibson, Surrey, GB;
Elekta AB (Publ), Stockholm, SE;
Abstract
Apparatus comprising a radiation source which can rotate in an arc around the radiation beam axis, a multi-leaf collimator (MLC), and a controller for the source dose/time rate, the source rotation speed, and the MLC position. The controller calculates the time required for (i) an MLC leaf movement from start to end of an arc-segment at a maximum leaf speed, (ii) rotation of the source from start to end of the arc-segment at a maximum speed, and (iii) delivery of the dose at a maximum dose rate per time, selects the longest of (i), (ii) and (iii), and operates the selected one at its maximum and the others at a reduced rate matching that longest time, the time required for (i) and/or (ii) being the greater of the time to complete the segment at a continuous speed and the time to accelerate the item to that speed.