Split filter CT
US4255664A · kind A · utility
19Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jun 8, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/56
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved computer assisted tomographic scanner is disclosed. The scanner includes a source of X-radiation and an array of detectors for determining X-ray intensity once that radiation has passed through a patient. The source emits a spread of radiation which is filtered to comprise a spread of two distinct energy ranges before the radiation reaches the patient. This filtering produces multiple intensity readings for a given X-ray path: thereby allowing imaging electronics within the scanner to reduce chromatic artifacts and provide electron density and atomic number mappings to the diagnostician.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.