Radiographic screening for glass foreign bodies — what does a “negative” foreign body series really mean?
✍ Scribed by Brad J Courter
- Book ID
- 104311216
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 871 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1097-6760
No coin nor oath required. For personal study only.
✦ Synopsis
This study was designed to provide percentages of radiographic detection of small glass foreign bodies and to compare the detection rates (sensitivity) of two-view posteroanterior and lateral with those of four-view posteroanterior, lateral, and right and left obliques screening radiographs. Three sizes (0.5, 1.0, and 2.0 ram, maximum dimension) of beer bottle glass fragments were inserted into chicken legs and radiographed. Three staff radiologists reviewed the films independently. With two-view radiography, the 2.0-, 1.0-, and 0.5-ram glass fragments exhibited 99%, 83%, and 61% average detection rates, respectively An analysis of variance and a Tukey's range test demonstrated that the variation in the average detection rate with respect to size was statistically significant (P < .01). X 2 Analysis failed to demonstrate a statistically significant (P > .05) increase in average detection rates with four-view radiography. The results of this study indicate that the size of the glass foreign body is often the limiting factor for radiographic detection and that 0.5-to 2.O-ram fragments represent a "limited detection" size range. Furthermore, two-view radiography is appropriate and more cost-effective than four-view radiography for screening purposes.