X-ray compass for determining device orientation

Patent · 01 January 1999

OSTI ID:872337

Da Silva, Luiz B ^[1]; Matthews, Dennis L ^[2]; Fitch, Joseph P ^[3]; Everett, Matthew J ^[4]; Colston, Billy W ^[3]; Stone, Gary F ^[3]

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1. Danville, CA
2. Moss Beach, CA
3. Livermore, CA
4. Pleasanton, CA

An apparatus and method for determining the orientation of a device with respect to an x-ray source. In one embodiment, the present invention is coupled to a medical device in order to determine the rotational orientation of the medical device with respect to the x-ray source. In such an embodiment, the present invention is comprised of a scintillator portion which is adapted to emit photons upon the absorption of x-rays emitted from the x-ray source. An x-ray blocking portion is coupled to the scintillator portion. The x-ray blocking portion is disposed so as to vary the quantity of x-rays which penetrate the scintillator portion based upon the particular rotational orientation of the medical device with respect to the x-ray source. A photon transport mechanism is also coupled to the scintillator portion. The photon transport mechanism is adapted to pass the photons emitted from the scintillator portion to an electronics portion. By analyzing the quantity of the photons, the electronics portion determines the rotational orientation of the medical device with respect to the x-ray source.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5912945
• OSTI ID: 872337
• Country of Publication: United States
• Language: English

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