Method and system for displaying X-ray images of blood-vessel structure parts of subject
US4943987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Nov 1, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/504
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
X-ray mask images of a subject are acquired by a TV camera before a contrast media injected by a injector reaches a region of interest of the subject, the acquired X-ray mask images are stored in a mask image memory in accordance with a frame counter and a memory controller. X-ray contrast images of the subject are acquired by the TV camera after the contrast media reaches the region of interest of the subject, the acquired X-ray contrast images are stored in a contrast image memory in accordance with a frame counter and a memory controller. The mask images and contrast images are subtracted by a subtraction processor, and X-ray subtraction images are obtained. The X-ray images of the subject acquired by the TV camera and the X-ray subtraction images are superimposed by a superimposition processor, and then are displayed on a TV monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.