BACKGROUND Radiological examinations are commonly requested for patients to aid clinical diagnosis. However, many doctors do not realise how much radiation dosage their patients are exposed to during radiological investigations. This study aims to assess and compare the knowledge of radiologists and non-radiologists about radiation doses of common radiological investigations. METHODS A prospe...

Phosphate rock samples collected from the phosphate bearing formations of Sokoto State, Northwest Nigeria were assessed for their radiological contents by gamma spectrometric technique (sodium iodide (NaI (Tl) detector). The mean activity concentrations of 226 Ra, 232 Th and 40 K in all the studied samples were 720.1±4.2 Bqkg -1 , 33.5±1.4 Bqkg -1 , and 315.3±6.7 Bqkg -1 respectively. Contribut...

Geographic Information Systems for Community Environmental Health Applications ............................................... 1 Literature Review on GIS: Benefits and Barriers to Community Empowerment ............................................... 5 Nuclear Risk Management for Native Communities Project (NRMNC): GIS and Community-Based Hazard Management...........................................

An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that this infrared emission derives from the design of the pointer, and describe a simple method of testing for infrared emissions using common household items.