Projectile Cylinder Accidents Resulting from the Presence of Ferromagnetic Nitrous Oxide or Oxygen Tanks in the MR Suite
Gregory Chaljub1,
Larry A. Kramer2,
Raleigh F. Johnson, III1,
Raleigh F. Johnson, Jr.1,
Harbans Singh1 and
Wayne N. Crow1
1
Department of Radiology, University of Texas Medical Branch, Galveston, 301
University Blvd., Galveston, TX 77555-0709.
2
Department of Radiology, University of Texas Health Sciences Center, 6431
Fannin, Ste. 2. 100, Houston, TX 77030.

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Fig. 1A. Photographs show aftermath of incident 2, which occurred at
first institution. Portable anesthesia tank of nitrous oxide (arrows)
lies in bore of 1.5-T MR unit. T = table.
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Fig. 1B. Photographs show aftermath of incident 2, which occurred at
first institution. Head coil carriage and surface coil connection box have
been dislodged from table. Note cylinder mark and cracks in plastic
(arrows).
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Fig. 2. Photograph depicts result of incident 3, which occurred at
second institution. H-cylinder (white arrow) lies within bore of
1.5-T MR magnet lodged against head coil carriage. Note trail of paint along
bore opening (black arrow), which is only visible damage to
scanner.
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Copyright © 2001 by the American Roentgen Ray Society.