Influence of early and current environmental exposure factors
on sensitization and outcome of asthma in preschool children.
While measuring doses on adult patients, the following parameters were recorded: exposure factors
, focus to film distance, and the patient's age, weight and thickness.
Although radiographic detection of the sponges on standard antero-posterior projections is difficult because of exposure factors
, other confusing linear markers, and metallic densities such as sternal sutures, knowledge of the typical location of a lost sponge and use of lateral radiographic projections may aid in early detection of this rare complication.
Since medical x-rays are created by the radiographic unit, one important factor in determining their energy level is the original technical exposure factors
used to create the image.
(Kvp, Mas), type of film, and magnification were varied in the experiments using Faxitron.
Although these changes in risk assessment procedures have brought greater rationality to the evaluation of Superfund sites, EPA still usually insists on the use of hypothetical exposure factors
(for example, the length of time that someone may come in contact with the site) that may overstate risks.
When exposure estimates do not take into account exposure factors
such as time-location-activity patterns (including time spent indoors) (Monn 2001; Setton et al.
were similar to those previously documented for Statscan radiation dose measurements.