Ge Medical Systems Global Technology Company, LLC

General Electric Company

Liqin Wang

Gregory Alan Steinlage

Mark Ernest Vermilyea

Pazhayannur Ramanathan Subramanian

Michael Scott Hebert

Thomas Carson Tiearney, Jr

David E Dean

Mark O Derakhshan

Ron Kent Hockersmith

Thomas Dean Schaefer

Srihari Balasubramanian

An anode assembly () includes a thermally conductive bearing encasement () covering a portion of a bearing (). An anode () rotates on the bearing () and has a target () with an associated focal spot (). The thermally conductive bearing encasement () is configured and expansion limited to prevent displacement of the focal spot () of greater than a predetermined displacement during operation of the anode ().

Bearing temperature and focal spot position controlled anode for a CT system

A slotted window collector assembly for an x-ray tube having an anode and a cathode includes a collector having an anode side and a cathode side, which opposes the anode side. The anode side and the cathode side define an internal bore there between for receiving x-rays from the anode. The slotted collector further includes a window side common to both the anode side and the cathode side and having a window coupled thereto, wherein a window aperture is defined extending from the window to the internal bore. Within the collector assembly, a slot is defined intersecting the window aperture and extending trans-axially thereto and beyond a set length. The slot also extends circumferentially with the window such that plastic strain on the window and heat transferred to the window are reduced.

Electron collector system

An x-ray tube target assemblyprovided. The target assemblyincludes a target plate elementhaving an impact surface, a target rear surface, an inner target bore, and an outer target circumference. The target plate elementdefines a target plate depthbetween the impact surfaceand the target rear surface. The target rear surfaceis formed such that the target plate depthtapers from an increased target plate depthat the inner target bore to a decreased target plate depthat the outer target circumference. The target assemblyfurther includes a graphite base elementhaving a base upper surfaceand a base rear surface. The base upper surfaceis formed to mate with the target rear surface

Target bore strengthening method

An x-ray tube target assemblyis provided. The assemblyincludes a target disc elementhaving a target bore. A target shafttransmits rotational drive to the target disc element. The target shaftincludes a plurality of axial adjustment slotsformed in an upper portion. The plurality of axial adjustment slotsare positioned around the target shaftto form a plurality of partial circumferential ribs. The plurality of partial circumferential ribsare brazed to the target bore

Target attachment assembly

An X-ray target material comprising an oxide-dispersion strengthened Mo (ODS-Mo) alloy. ODS-Mo refers to molybdenum strengthened by a fine dispersion of insoluble oxide particles of one or more of the following compounds: La O , Y O and CeO . ODS&mdash;Mo alloy improves upon the prior art by providing higher and more uniform strength and creep resistance over the applicable temperature range of large brazed graphite targets. This, in conjunction with higher-strength graphite, allows the target to spin faster without causing graphite burst, thus providing improvement in peak power. The recrystallization temperature of the fabricated material is high enough to maintain original properties through all target processing, including a very high-temperature braze cycle.

Growing community of inventors

Brookfield, WI, United States of America

Liqin Wang