Extended low contrast detectability for radiographic imaging systems
US8891849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2010 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Oct 21, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/405
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods for determining an extended low contrast detectability performance function for an operating range for a core operating mode of a radiographic imaging system using actual reconstructed images characterize the contrast performance of a radiographic imaging system over its operating range and for any patient size based on the off-line calibration, uses ordered pairs of flux index and contrast index for each scanned object to provide a contrast index for each protocol for each contrast set, and uses the ordered pairs of flux index and contrast index to determine an extended low contrast detectability performance function for the operating range of a radiographic imaging system. Extended low contrast detectability performance data compilation and methods of clinical use, and low contrast phantom configurations and methods of calibration are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.