This is because visibility of an object depends on many factors, such as the objects material, size, anatomic location and surrounding structures, as well as the patients body habitus. X-ray beams only show an object if that objects composition blocks the rays from traveling through, making it radiopaque and appearing lighter or white on the image. This also requires it to not be stuck behind something that blocks the beams first. Objects that are radiopaque include items made of most metals except aluminum, bones except most fish bones, and glass. If the material does not block the x-ray beams it is considered radiolucent and will appear dark which prevents visualization. This includes material such as most plastics, most fish bones, wood, and most aluminum objects.Other diagnostic imaging modalities, such as magnetic resonance imaging, computed tomography, and ventilation perfusion scans play a limited role in the diagnosis of foreign body aspiration.Signs on x-ray that are more commonly seen than the object itself and can be indicative of foreign body aspiration include visualization of the foreign body or hyperinflation of the affected lung. Other x-ray findings that can be seen with foreign body aspiration include obstructive emphysema, atelectasis, and consolidation.While, x-ray can be used to visualize the location and identity of a foreign body, rigid bronchoscopy under general anesthesia is the gold-standard for diagnosis since the foreign body can be visualized and removed with this intervention.
This education should include educating caretakers on how to recognize choking and perform first aid and cardiopulmonary resuscitation, check for warning labels and toy recalls, and avoid high risk objects and foods.Thanks to numerous public advancements, such as the Child Safety Protection Act and the Federal Hazardous Substance Act (FHSA), warning labels for choking hazards are required on packaging for small balls, marbles, balloons, and toys with small parts when these are intended for use by children in at-risk age groups. Also, the Consumer Product Safety Improvement Act of 2008 amended the FHSA to also require advertisements on websites, catalogues, and other printed materials to include the choking hazard warnings. == References ==