radiation beams

[Bayesianworld]

I was looking at a class that we (I) defined: radiation_therapy_beam.
In the comments section I find the following.
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_definition "A configuration of the elements that comprise a radiation therapy device whose function is to deliver a planned amount of radiation to a particular patient."

rdfs:comment "Meeting of 9/2/20: General discussion led to conclusion that this is a bad class. Should probably be deleted.

Some examples of radiation therapy beam:
- a 6 MV x-ray beam modulated by a 30 degree wedge with the gantry angle of 90 degrees, collimator rotation of 0 degrees, and planned dose to the isocenter of 100 cGy.
- a 10 MV x-ray beam collimated using a mulitleaf collimator in a set of steps (segments) of a given shape and monitor units with a gantry angle of 15 degrees, collimator angle of 20 degrees on a given linear accelerator.
[MHP 9/1/20]"_
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Does anyone remember why we thought this is a bad class?

[jonathanbona]

I wasn't part of that discussion, but I do think the definition could use some work. I would expect a radiation therapy beam to be the actual radiation released, as a result of a particular configuration of a machine, which would be captured in a specification or plan about the therapy. To say that the beam *is* a configuration seems confusing.

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On Fri, Sep 23, 2022 at 2:06 PM Mark PHillips ***@***.***> wrote: I was looking at a class that we (I) defined: radiation_therapy_beam. In the comments section I find the following. ------------------------------------------------- _definition "A configuration of the elements that comprise a radiation therapy device whose function is to deliver a planned amount of radiation to a particular patient." rdfs:comment "Meeting of 9/2/20: General discussion led to conclusion that this is a bad class. Should probably be deleted. Some examples of radiation therapy beam: - a 6 MV x-ray beam modulated by a 30 degree wedge with the gantry angle of 90 degrees, collimator rotation of 0 degrees, and planned dose to the isocenter of 100 cGy. - a 10 MV x-ray beam collimated using a mulitleaf collimator in a set of steps (segments) of a given shape and monitor units with a gantry angle of 15 degrees, collimator angle of 20 degrees on a given linear accelerator. [MHP 9/1/20]"_ ----------------------------------------------- Does anyone remember why we thought this is a bad class? — Reply to this email directly, view it on GitHub <#72>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAATBN73GXYILML3SGUWXADV7X5RVANCNFSM6AAAAAAQUHPGLY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Bayesianworld]

There is also a "radiation_beam" which is just the collimated stream of particles (x-rays, electrons,etc) that deliver the energy. This is "part_of" the radiation_therapy_beam.