Other

Koninklijke Philips Corporation N.v.

The General Hospital Corporation

David J Papp

Thomas Bortfeld

Matthieu Frédéric Bal

Jan Unkelbach

A method includes determining a set of candidate beam directions. The radiation therapy method further includes selecting a sub-set of non-coplanar beam directions of interest from the set of candidate beam directions based on a fluence optimization using a beam angle selection algorithm. The radiation therapy method further includes determining a set of delivery options based on a beam trajectory algorithm, wherein the delivery options at least include a non-coplanar trajectory during radiation treatment delivery. The radiation therapy method further includes optimizing the delivery options to generate a VMAT radiation plan with non-coplanar beam trajectories. The optimizing of the delivery options includes optimizing at least one machine parameter.

Volumetric modulated arc therapy (VMAT) with non-coplanar trajectories

An adjustable floor drain apparatus having an outer cylindrically shaped body with threads on the inside thereof attached to the top of a drain pipe. A cylindrical member is disposed inside of the outer body so that concrete can be poured around the cylindrical member and the concrete will not enter the outer body. An inner cylindrically shaped body having threads on the exterior thereof is provided for mating with the inside threads on the outer body whereby the inner body can be threaded into the outer body and whereby the top thereof can be adjusted up or down to conform to the height of the finished floor. A ring is adapted to engage the top of the inner body and the ring has a partially spherical surface around the lower periphery thereof which contacts the top of the inner body which also has a complementary shaped partial spherical surface thereon for providing a mating slideable joint between the ring and the inner body. The ring is adjustably attached to the inner body. A grate is disposed in a recess on the ring and an optional basket strainer can be installed under the grate.

Adjustable floor drain apparatus

An adjustable cleanout apparatus having an inner cylindrically shaped body with an outer portion thereof having threads thereon, such inner body having a predetermined inner diameter. Holes extend through the bottom of the inner body for permitting the inner body to be attached to an upstanding plumbing cleanout pipe. A lead and oakum joint is formed between the outer top portion of the cleanout pipe and the inner portion of the inner body. A cylindrical member having an outer diameter larger than the diameter of the outer portion of the inner body is utilized to be disposed over the inner body so that a concrete floor poured around the cylindrical member will not come into contact with a substantial portion of the threads of the inner body whereby such cylindrical member can be selectively removed from around the inner body after the concrete is cured. An outer cylindrical shaped body having an outer diameter no larger than the outer diameter of the cylindrical member and having threads on the interior thereof permit this other body to be threadably engaged with the threads on the exterior of the inner body whereby the outer body can be placed in the space vacated by the cylindrical member. Rotation of the outer body in one direction will move it upwardly and rotation of the outer body in an opposite direction will move it downwardly.

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Waukesha, WI, United States of America

David J Papp