Method of making tomogram and apparatus
US4039837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1976 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Jul 2, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/51
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method and apparatus for making a tomogram according to this invention include one elongated support member supporting an X-ray tube and a film device in an opposed relation with each other at both ends thereof and one vertical shaft supporting the elongated support member thereon. Movement of the axis of the shaft along a desired curve results in the movement of an X-ray beam in the state of the X-ray beam intersecting the curve. In the meantime, an angle of rotation around the axis of the shaft is adjusted so as to maintain an angle of intersection of the X-ray beam with the curve at a predetermined angle. A film surface is moved relatively with respect to the X-ray beam so as to allow the beam to scan the film surface. The velocity of movement of the film surface is synchronized with the movement of the shaft. In the invention, the aforementioned movement of the shaft along the curve, the aforementioned angle of rotation of the shaft and the aforementioned movement of the film surface are respectively controlled or adjusted by digital signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.