Fast determination of indoor radon (222Rn) concentration using liquid scintillation counting.

The indoor 222Rn radionuclide was directly absorbed in typical 20 ml glass scintillation vials by passing -3 dm3 of ambient air through 16 ml of water-immiscible non-volataile scintillation cocktail Ultima-Gold F for 10 min. The activity of radon and its two α-emitting daughters: 218Po and 214Po, was determined with the BetaScout low-background liquid scintillation counter. The limit of 222Rn detection is 9 Bq/m3, and the quantification limit with 20% relative accuracy is 28 Bq/m3. The results of the indoor Rn measurement in different houses showed good consistency with results obtained from a Sarad EQF 3220 device.

[Abducent nerve palsy as the only symptom of intracavernous carotid aneurysm in a child]. / Porazenie nerwu odwodzacego jako jedyny objaw tetniaka tetnicy szyjnej wewnetrznej u dzlecka.

A case of a 10-year old child with isolated sixth nerve palsy due to giant intracavernous carotid aneurysm is presented. The aneurysm was confirmed by CT brain scan and carotid angiography. It was closed after local embolization of internal carotid artery with the use of platinum inlays. It turns out that an intracranial aneurysm can be, although very rarely, the cause of isolated sixth nerve palsy in childhood.