<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.pet skanning ni teknolojia kubwa na nzuri sana, lakini kwa kutumia hivyo kwa njia hii haionekani tofauti yoyote kwa ajili ya saratani hizi ambazo zina ubashiri maskini, anasema mark healey  <response>: pet scanning is a great technology and very effective, but using it in this way doesnt seem to make any difference for these cancers that have a relatively poor prognosis, says mark healey 