In spite of therapeutic nihilism, most dermatologists use x-ray therapy. The majority use x-ray cones (1) to standardize target skin distance; (2) to limit laterally the areas treated; (3) to prevent inadvertent tubehead ``drift'' closer to the patient's skin and an inadvertent overdose of radiation; (4) to cut down on the scattered radiation inherent in all x-ray therapy.
Cones have the disadvantage of being expensive, heavy, fragile, and bulky to store.
The wall-hung cone holder described below has the following advantages: (1) instant, easy access to all cones; or denting; (3) storage without waste of floor or table space.
Materials required are the following:
One piece, finished 27½×5¾×⅞ in., fir, spruce, or other semihard wood, edges and corners rounded
16 in. length, 1¾ in. diameter dowel, cut into: 8½ in. length, 30 degree angle (for 20 cm. cone); 4½ in. length, 15 degree angle (for 8 cm. cone); and
ZIMMERMAN MC. A Convenient Wall Holder for X-Rays. AMA Arch Derm. 1957;76(6):788. doi:10.1001/archderm.1957.01550240106023
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