Localization of firearm projectiles in the human body using a superconducting quantum interference device magnetometer: A theoretical study
| Autor: | C. Hall Barbosa |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 75:2098-2106 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1753679 |
| Popis: | A technique had been previously developed, based on magnetic field measurements using a superconducting quantum interference device sensor, to localize in three dimensions steel needles lost in the human body. In all six cases that were treated until now, the technique allowed easy surgical localization of the needles with high accuracy. The technique decreases, by a large factor, the surgery time for foreign body extraction, and also reduces the generally high odds of failure. The method is accurate, noninvasive, and innocuous, and with clear clinical importance. Despite the importance of needle localization, the most prevalent foreign body in the modern society is the firearm projectile (bullet), generally composed of lead, a paramagnetic material, thus not presenting a remanent magnetic field as steel needles do. On the other hand, since lead is a good conductor, eddy current detection techniques can be employed, by applying an alternating magnetic field with the aid of excitation coils. The primary fi... |
| Databáze: | OpenAIRE |
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