Automatically detecting the presence of contrast agent in medical image
US7346202B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Aug 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/922
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A CAD system pre-analyzes a medical image to automatically determine whether contrast agent was introduced into the patient before forming that image. In one embodiment, contrast agent detection is performed by comparing the voxel values in known blood-containing areas to voxel values of known water-containing areas, and if there is a substantial difference above a preferred threshold, then it is determined that this patient was indeed injected with the contrast agent. Upon finding that the patient was indeed injected with contrast agent, the CAD algorithm then automatically performs both a detection algorithm that uses the contrast agent and one that does not and notifies the clinician that both sets of results are available to look at. However, if it is determined that the patient was not injected with contrast agent, the CAD algorithm does not perform the algorithm that uses the contrast agent does not give the user the option to view any results from such algorithm. The invention may be practiced with a variety of imaging technologies some of which may not require an explicit comparison of the voxel values from the blood-containing and water-containing areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.