The report came after a construction company based in Fukushima admitted that it forced workers at the Fukushima Daiichi plant to cover their dosimeters with lead plates last year, in a bid to stay under a government safety threshold for exposure.
A maximum safety threshold for normal liver parenchyma of 70 Gy was advocated based on these data [ 26].
Thus, a certain safety threshold for VILI does not seem to exist, and any effort to minimize VILI further might be of relevance, particularly for the most severely ill ARDS patients [ 5].
There is however not a single case in the literature of significant aluminium toxicity occurring in the presence of serum aluminium levels of less than 1.5 μmol/L, so it is possible that this level of aluminium could be a starting point for a safety threshold.
For the two-photon and SHG microscopy, the laser power was set at 0.21 mW, resulting in an average intensity of 49.5 KW/cm as well as a peak intensity of 5.96 GW/cm at the focus, which is within the safety threshold for biological imaging.
The Environmental Protection Agency sets the safety threshold for lead in residential soils at 400 parts per million and recommends soil cleanup for levels of more than 5,000 parts per million.
This level corresponds to the safety threshold for human health (SEPA China State Enviromental Protection Administration of China [1995]).
There is, in other words, no apparent safety threshold for ethyl alcohol consumption, and no apparent safe period after conception.
Guidelines for intraoperative ventilation are lacking, and the recommended safety threshold for healthy patients has unofficially been set at VT < 10 mL/kg PBW [ 18- 21].
