Computed tomography
US4168436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1977 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Nov 14, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/46
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Computed tomography apparatus having a continuously rotating X-ray projection and detection unit and circuits for controlling the X-ray tube to produce a radiation pulse of predetermined amplitude and duration for each increment of angular motion of the rotating unit. The X-ray tube is controlled by high-voltage switching elements which apply a voltage pulse of precisely measured duration from a charging circuit which supplies a controlled level DC voltage for driving the X-ray tube. A main control circuit responds to position indicating signals from the rotating unit to repetitively operate the charging circuit and the switching elements whereby highly reproducible X-ray pulses irradiate a subject under examination to enable generation of high quality sectional images, i.e., tomograms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.