Anteriorly-weighted radiation fields

07:14 Nov 2, 2016

English language (monolingual) [PRO]
Medical - Medical (general) / radiotherapy, radiation, oncology

English term or phrase: Anteriorly-weighted radiation fields

Hello, everyone!

I would like to ask for your help in understanding what "anteriorly-weighted radiation field" means. Fortunately, I am not asking for myself but just doing a translation of COG LTFU guidelines (http://www.survivorshipguidelines.org/pdf/LTFUGuidelines_40.... p.140) from English into Russian and I am just not sure whether I understand this word combination correctly. It is given on the list of highest risk factors for cardiac toxicity after irradiation of some fields. What does "weighing" of radiation fields involve? Is it about calculating an equivalent dose? Is an "anteriorly-weighted radiation field" the same as just an "anterior field"? Could you please explain or somehow paraphrase it? Please make it as detailed and simple as possible since I am by far not a medical expert))

I would really appreciate any help!

Steks
Russian Federation

SUMMARY OF ALL EXPLANATIONS PROVIDED

radiation field higher on the anterior face of the body

Didier Fourcot

near-field radiation is weighted

Port City

Summary of reference entries provided

Multuplied by a factor

Masoud Kakouli Varnousfaderani

Discussion entries: 1

Answers

1 day 2 hrs confidence:

anteriorly-weighted radiation fields near-field radiation is weighted

Explanation:
Just a guess.

Port City
New Zealand
Native speaker of:

Japanese

1 day 3 hrs confidence:

radiation field higher on the anterior face of the body

Explanation:
Description of anterior weighting here:

https://www.researchgate.net/profile/Peter_H_Wiernik/publica...
PA midplane received 2500-3000 rads from the anterior mantle field, followed by 1000-1500 rads from the smaller posterior mediastinal field

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Note added at 1 jour4 heures (2016-11-03 11:19:07 GMT)
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See 7.7.1 in this doc:
http://www.irsn.fr/FR/professionnels_sante/documentation/Doc...
and preferential wigihting of the anterior field in this one:
http://pubs.rsna.org/doi/full/10.1148/radiographics.20.1.g00...

Reference: http://europepmc.org/abstract/med/7074628

Didier Fourcot
Local time: 23:05
Native speaker of:

French

Reference comments

7 hrs peer agreement (net): -1

Reference: Multuplied by a factor

Reference information:
I think wighted means it is multiplied by a factor such as when we say weighted average.

Weighted average:
an average resulting from the multiplication of each component by a factor reflecting its importance.

Look at this sentence from iaea website:
radiation weighting factor, wR:
A number by which the absorbed dose in a tissue or organ is multiplied to reflect the relative biological effectiveness of the radiation in inducing stochastic effects at low doses, the result being the equivalent dose.

Example sentence(s):

https://www.iaea.org/ns/tutorials/regcontrol/intro/glossaryq_r.htm#R44

Masoud Kakouli Varnousfaderani
Türkiye
Native speaker of:

Persian (Farsi)

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