Patient positioning indication arrangement for a computed tomography system
US4117337A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A computed tomography system has an arrangement for indicating the staged position of a patient in relation to the location of a first scan by the system. The arrangement includes at least one energy beam source, such as a laser, which projects a visible pattern on the surface of the patient. The pattern corresponds to the central alignment of the system and to the location of the first scan of the system when a patient-supporting table is subsequently translated into a gantry of the system for x-ray examination. The pattern includes a central longitudinal line indicating a central longitudinal plane of the area to be scanned, and a transverse line indicating the location of the transverse plane of the first scan. The energy beam source of the arrangement is adjustable to project an angled line which corresponds to a tilted gantry or a tilted patient, or a tilted supporting table to indicate the location of the transverse plane of the first scan of the system. The patient is aligned and located in agreement to the projected patterns to thereby properly position the patient for the subsequent desired first scan by the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.