| US 7,476,023 B1 | ||
| Multiple energy x-ray source assembly | ||
| Bradley Dee Canfield, Orem, Utah (US); and James R. Boye, Salt Lake City, Utah (US) | ||
| Assigned to Varian Medical Systems, Inc., Palo Alto, Calif. (US) | ||
| Filed on Jul. 27, 2006, as Appl. No. 11/460,581. | ||
| Int. Cl. H01J 35/16 (2006.01) | ||
| U.S. Cl. 378—203 [378/9] | 20 Claims |
| 1. A multiple energy x-ray source assembly comprising:
a support structure having an aperture formed therein;
a first x-ray generating source comprising a first cathode and a first anode positioned within a first evacuated enclosure,
the first x-ray generating source mounted on the support structure and configured to emit a first primary x-ray signal through
the aperture along a first predetermined path and having a first predetermined energy level;
a second x-ray generating source comprising a second cathode and a second anode positioned within a second evacuated enclosure,
the second x-ray generating source mounted on the support structure and configured to emit a second primary x-ray signal through
the aperture along a second predetermined path and having a second predetermined energy level; and
first and second interlocking beam shields configured to position the first x-ray generating source with respect to the second
x-ray generating source on the support structure such that the position of the first source and the second source are adjustable
with respect to one another.
|