IN RECENT years a multitude of methods for localizing foreign bodies has filled both the American and the foreign literature, but the majority require special localizing equipment. The methods described have been based on some form of localization or on electronic principles. One method of localization is based on the basic principle of parallax and similar triangles as popularized by Shenton.1 The depth of the foreign body is determined from measurement of its shift on parallel x-ray plates when the tube head is shifted and a double exposure is made on the roentgenograms.2 A second method is based on the principle of marking the skin with gentian violet at intervals of 1 inch (2.5 cm.), placing lead shot on adhesive tape along the same lines and taking a roentgenogram.3 A third method is the localization of foreign bodies with a pointed hemostat under the fluoroscope. The electronic
BRECK LW, MAYLAHN DJ. NEW SIMPLIFIED TECHNIC FOR LOCALIZATION OF FOREIGN BODY. Arch Surg. 1950;61(3):589–592. doi:10.1001/archsurg.1950.01250020594018
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