Letter

Ionising radiation in infancy and adult cognitive function

BMJ 2004; 328 doi: 10.1136/bmj.328.7439.582-a (Published 4 March 2004)
Cite this as: BMJ 2004;328:582.2

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Wrong impression was created by study's publicity

  1. Sanjay P Prabhu, specialist registrar in general and radionuclide radiology (drsanjuuk@yahoo.co.uk)
  1. Royal United Hospital, Bath BA1 3NG

    EDITOR—The study by Hall et al on ionising radiation in childhood is flawed for several reasons.1

    Firstly, exposure to radiation in 1930-60 was without adequate collimation and shielding, and the machines used were far less accurate than recent models.

    Secondly, the x ray treatments entailed mainly contact therapy at low (60 kVp) voltage, which means less penetration and …

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