Three detector head gamma camera system with independently circumferentially positionable detector heads
US5717212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Apr 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/1648
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A rotating gantry (20) is rotatably mounted to a stationary gantry for rotation around an axis of rotation. Gamma camera detector heads (22a, 22b, 22c) are mounted to the rotating gantry for rotation about a patient receiving region (14). A patient is supported on a first, cantilevered patient support portion (10) which is adjustable in height, and which selectively extends toward and away from a slab defined by the detector heads. In one mode of use, the first patient support portion (10) is supported on a second support surface (16) when fully cantilevered to minimize vibration and movement. In a second mode, the first patient support portion (10) is separated by a gap from the second support portion (16) and the region of interest of the patient is positioned over the gap. In this manner, radiation passing from the region of interest of the patient to the detector heads is not attenuated by a patient support structure. Further, the detector heads are mounted on tracks (30, 32) by rollers (44, 46). A linear motor (34) selectively moves each detector head along the tracks to change its circumferential position relative to the other detector heads. The movable detector head is furt…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.