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In favour of using

compiled by Andreo

Dose-to-tissue is the quantity ‘

inherently

’ computed by MCTP. This may be

of more clinical relevance than the doses on which historical clinical

experience is based, which are approximate estimates of the true dose in the

first place.

The difference between

and

for tissue-equivalent materials

is

rather small

and ‘

is likely

’ to have

minimal impact in clinical

practice

.

Converting

back to

in order to overcome constraint in the

case involves ‘

additional complexity

’ and introduces

additional

uncertainty.

April 2017

43

From P. Andreo, "Dose to 'water-like' media or dose to tissue in MV photons

radiotherapy treatment planning: still a matter of debate," Phys. Med. Biol. 60,

309-337 (2015)